Bibliographie

2020



  • Becquet Valentine, Nouaman Marcellin, Plazy Mélanie, Masumbuko Jean-Marie, Anoma Camille, Kouame Soh, Danel Christine, Eholie Serge Paul, Larmarange Joseph et ANRS 12361 PrEP-CI Study group (2020) « Sexual health needs of female sex workers in Côte d’Ivoire: a mixed-methods study to prepare the future implementation of pre-exposure prophylaxis (PrEP) for HIV prevention », BMJ Open, 10 (1) (janvier 1). DOI : 10/ggnfnk. https://bmjopen.bmj.com/content/10/1/e028508.
    Résumé : Objective To describe sexual and reproductive health (SRH) needs of female sex workers (FSWs) to inform the future implementation of pre-exposure prophylaxis (PrEP) for HIV prevention in this population. Design and setting The ANRS 12361 PrEP-CI cross-sectional and mixed-methods study was designed and implemented with two community-based organisations in Côte d’Ivoire. Participants A convenience sample of 1000 FSWs aged ≥18, not known as HIV-positive, completed a standardised questionnaire assessing sociodemographic characteristics, sexual practices, use of community health services and a priori acceptability of PrEP. Twenty-two indepth interviews and eight focus group discussions were also conducted to document FSWs’ risky practices and sexual behaviours, experiences with violence and discrimination, attitudes regarding HIV and sexually transmitted infections (STIs), and barriers to SRH services. Results Although 87% described consistent condom use with clients, more than 22% declared accepting condomless sexual intercourse for a large sum of money. Furthermore, condom use with their steady partner and knowledge of their partner’s HIV status were low despite their acknowledged concurrent sexual partnerships. While inconsistent condom use exposed FSWs to STIs and undesired pregnancies, the prevalence of contraceptive strategies other than condoms was low (39%) due to fear of contraception causing sterility. FSWs faced obstacles to accessing SRH care and preferred advice from their peers or self-medication. Conclusions Despite adoption of preventive behaviour in most cases, FSWs are still highly exposed to HIV. Furthermore, FSWs seem to face several barriers to accessing SRH. Implementing PrEP among FSWs in West Africa, such as in Côte d’Ivoire, constitutes an opportunity to consider the regular follow-up of HIV-negative FSWs. PrEP initiation should not condition access to SRH services; conversely, SRH services could be a way to attract FSWs into HIV prevention. Our results highlight the importance of developing a people-focused approach that integrates all SRH needs when transitioning from PrEP efficacy trials to implementation.
    Mots-clés : demography, epidemiology, HIV & AIDS, public health, qualitative research.
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  • Bekelynck Anne et Larmarange Joseph (2020) « La politique de dépistage du VIH de Pepfar 3.0 en Côte d'Ivoire (2014 à 2018) : fragmentation, accélération et déconnexion », Aidspan, 96, février 28. https://www.aidspan.org/fr/node/5224.

  • Bekelynck Anne et Larmarange Joseph (2020) « PEPFAR’s 3.0 HIV testing policy in Côte d'Ivoire reveals fragmentation, acceleration and disconnection », Aidspan, 376, avril 1. https://www.aidspan.org/gfo_article/pepfar%E2%80%99s-30-hiv-testing-policy-c%C3%B4te-divoire-reveals-fragmentation-acceleration-and.

  • Boye Sokhna, Bouaré Seydou, Ky-Zerbo Odette, Rouveau Nicolas, Simo Fotso Arlette, d'Elbée Marc, Silhol Romain, Keita Adbelaye, Bekelynck Anne, Desclaux Alice, Larmarange Joseph, Pourette Dolorès et ATLAS Team (2020) « Challenges of HIV self-tests distribution for index testing in a context where HIV status disclosure is low: preliminary experience of the ATLAS project in Bamako, Mali » (poster PED1255), présenté à 23rd AIDS International Conference, San Francisco (virtual). https://cattendee.abstractsonline.com/meeting/9289/Presentation/2271.
    Résumé : BACKGROUND: In Côte d''Ivoire, Mali and Senegal, ATLAS project has introduced HIV self-testing (HIVST) as an index testing strategy, distributing HIVST kits to people living with HIV (PLHIV) during consultations for secondary distribution to their partners. Here, we present preliminary results of an ethnographic survey conducted in one HIV clinic in Bamako, Mali, where most HIV patients have not disclosed their HIV status to their partner(s), notably for women for fear of jeopardizing their relationships. In such a context, how non-disclosure affect the distribution of HIVST kits? METHODS: The study was conducted from September 25 to November 27, 2019, and included individual interviews with 8 health workers; 591 observations of medical consultations; and 7 observations of patient groups discussions led by peer educators. RESULTS: Three principal barriers to HIVST distribution for index testing were identified. (1) Reluctance of PLHIV to offer HIVST to partners to whom they have not (yet) disclosed their status and desire to learn tactics for offering testing without disclosing their HIV status. (2) Near-universal hesitancy among health workers to offer HIVST to persons who, they believe, have not disclosed their HIV status to their partner(s). (3) Absence of strategies, among health workers, to support discussion of status disclosure with PLHIV. In the rare cases where HIVST was offered to a PLHIV whose partner did not know their status, either the PLHIV declined the offer or the provider left it to the patient to find a way to deliver the HIVST without disclosing his/her status. CONCLUSIONS: HIV self-testing distribution could serve as an opportunity for PLHIV to disclose their HIV status to partners. The continuing reluctance of PLHIV to heed advice to share their status and promote secondary HIV self-testing distribution highlights the structural factors (social inequalities and stigma) that limit awareness of HIV status and that favour the persistence of the epidemic.
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  • Gantner Pierre, Laurent Christian, Larmarange Joseph et Ghosn Jade (2020) « Prophylaxie préexposition (PrEP) », in VIH, Hépatites virales, Santé sexuelle, par Christine Katlama, Jade Ghosn, et Gilles Wandeler, Paris : AFRAVIH, EDP sciences, p. 715-726. ISBN : 978-2-7598-2403-8. https://www.livre-afravih.org/.


  • Havlir Diane, Lockman Shahin, Ayles Helen, Larmarange Joseph, Chamie Gabriel, Gaolathe Tendani, Iwuji Collins, Fidler Sarah, Kamya Moses, Floyd Sian, Moore Janet, Hayes Richard, Petersen Maya et Dabis Francois (2020) « What do the Universal Test and Treat trials tell us about the path to HIV epidemic control? », Journal of the International AIDS Society, 23 (2) (février 24), p. e25455. DOI : 10/ggnfnb. https://onlinelibrary.wiley.com/doi/abs/10.1002/jia2.25455.
    Résumé : Introduction Achieving HIV epidemic control globally will require new strategies to accelerate reductions in HIV incidence and mortality. Universal test and treat (UTT) was evaluated in four randomized population-based trials (BCPP/Ya Tsie, HPTN 071/PopART, SEARCH, ANRS 12249/TasP) conducted in sub-Saharan Africa (SSA) during expanded antiretroviral treatment (ART) eligibility by World Health Organization guidelines and the UNAIDS 90-90-90 campaign. Discussion These three-year studies were conducted in Botswana, Zambia, Uganda, Kenya and South Africa in settings with baseline HIV prevalence from 4% to 30%. Key observations across studies were: (1) Universal testing (implemented via a variety of home and community-based testing approaches) achieved >90% coverage in all studies. (2) When coupled with robust linkage to HIV care, rapid ART start and patient-centred care, UTT achieved among the highest reported population levels of viral suppression in SSA. Significant gains in population-level viral suppression were made in regions with both low and high baseline population viral load; however, viral suppression gains were not uniform across all sub-populations and were lower among youth. (3) UTT resulted in marked reductions in community HIV incidence when universal testing and robust linkage were present. However, HIV elimination targets were not reached. In BCPP and HPTN 071, annualized HIV incidence was approximately 20% to 30% lower in the intervention (which included universal testing) compared to control arms (no universal testing). In SEARCH (where both arms had universal testing), incidence declined 32% over three years. (4) UTT reduced HIV associated mortality by 23% in the intervention versus control communities in SEARCH, a study in which mortality was comprehensively measured. Conclusions These trials provide strong evidence that UTT inclusive of universal testing increases population-level viral suppression and decreases HIV incidence and mortality faster than the status quo in SSA and should be adapted at a sub-country level as a public health strategy. However, more is needed, including integration of new prevention interventions into UTT, in order to reach UNAIDS HIV elimination targets.
    Mots-clés : antiretroviral therapy, HIV care continuum, HIV elimination, HIV prevention, HIV testing, public health, universal access.
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  • Inghels Maxime, Carillon, Séverine S., Desgrées du Loû Annabel et Larmarange Joseph (2020) « Effect of organizational models of provider-initiated testing and counseling (PITC) in health facilities on adult HIV testing coverage in sub-Saharan Africa », AIDS Care, 32 (2) (février 1), p. 163-169. DOI : 10/gf3krx. https://doi.org/10.1080/09540121.2019.1626339.
    Résumé : The purpose of this paper is to identify which Provider-Initiated HIV Testing and Counseling (PITC) organizational models are the most efficient to maximize testing coverage. We conducted a systematic literature review to identify published articles that evaluated routine PITC programs implemented in adult health facilities in Sub-Saharan Africa. We considered only articles measuring PITC offer, PITC acceptability and PITC coverage. Adjusted meta-regression models were performed to measure the association between PITC offer, acceptability and coverage with PITC organizational model. A total of 30 articles were included in the meta-analysis. Overall, 85.4% [95%CI: 77.2–93.5] of patients were offered a test, and 87.1% [82.4–91.7] accepted the test resulting in a PITC coverage of 74.3% [66–82.6]. Four types of PITC organizational models were identified: PITC initiated and performed during the consultation (model A), PITC initiated before consultation (model B), PITC referred on-site (model C) and PITC referred off-site (model D). Compared to model A, model B had a similar coverage (aOR: 1.02 [0.82–1.26]). However, coverage was lower for model C (aOR: 0.81 [0.68–0.97]) and model D (aOR: 0.58 [0.44–0.77]). Initiating the testing process before or during medical consultation is recommended for maximizing testing coverage among patients.
    Mots-clés : HIV testing, organizational models, Provider initiated testing and counseling, Sub-Saharan Africa, testing cover.
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  • Inghels Maxime, Kouassi Arsène Kra, Niangoran Serge, Bekelynck Anne, Carillon Séverine, Sika Lazare, Danel Christine, Kone Mariatou, Desgrées du Loû Annabel, Larmarange Joseph et ANRS 12323 DOD-CI Study Group (2020) « Cascade of Provider-Initiated Human Immunodeficiency Virus Testing and Counselling at Specific Life Events (Pregnancy, Sexually Transmitted Infections, Marriage) in Côte d'Ivoire », Sexually Transmitted Diseases, 47 (1) (janvier), p. 54-61. DOI : 10/ggnfnh.
    Résumé : BACKGROUND: Despite the implementation of Provider Initiated Testing and Counselling (PITC) in 2009, PITC coverage remains low in Cote d'Ivoire. The purpose of this study is to determine whether an human immunodeficiency virus (HIV) test was offered and performed at specific life events where PITC is recommended by national guidelines. METHODS: In 2017, a cross-sectional telephone survey was conducted among a representative sample of 3,867 adults from the general population in Côte d'Ivoire. The occurrences of the following events over the past 5 years were documented: pregnancy (event A) or partner's pregnancy (event B) of the last child, sexually transmitted infection (event C) and marriage (event D). For each of these events, participants were asked (i) if they consulted a health care professional, (ii) if they were offered an HIV test during that consultation and (iii) if they accepted it. RESULTS: Consulting a health care provider was reported by 94.9%, 58.3%, 70.3% and 19.1% of those who reported events A, B, C and D respectively. In case of medical consultations following events A, B, C and D, respectively 70.1%, 33.1%, 28.1%, and 78.8% of individuals were offered an HIV test. The testing acceptance was high regardless of the event. Overall, testing coverage was 63.7%, 16.9%, 13.4% and 14.5% for events A, B, C and D respectively. CONCLUSIONS: Increasing HIV testing coverage in Côte d'Ivoire requires (i) facilitating attendance to health services in case of sexually transmitted infections, marriage and pregnancy-for men-and (ii) strengthening routine testing offer on these occasions.
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  • Inghels Maxime, Kouassi Arsène Kra, Niangoran Serge, Bekelynck Anne, Carillon Séverine, Sika Lazare, Danel Christine, Kone Mariatou, Desgrees du Lou Annabel, Larmarange Joseph et for the ANRS 12323 DOD-CI Study Group (2020) « Practices and Obstacles to Provider-Initiated HIV Testing and Counseling (PITC) Among Healthcare Providers in Côte d’Ivoire », AIDS and Behavior (mai 24). DOI : 10.1007/s10461-020-02923-0. https://doi.org/10.1007/s10461-020-02923-0.
    Résumé : Practices of Provider-Initiated HIV Testing and Counseling (PITC) remains suboptimal in Côte d’Ivoire. The aim of this survey was to identify the practices and obstacles to PITC among healthcare professionals in Côte d'Ivoire. A nationally representative cross-sectional survey was conducted in 2018 by telephone among three separate samples of midwives, nurses and physicians practicing in Côte d'Ivoire. The number of HIV tests proposed during consultation in the month preceding the survey was collected for each professional. Factors associated with the number of proposed tests were identified through ordinal logistic regression models. A total of 298 midwives, 308 nurses and 289 physicians were interviewed. Midwives proposed the test more frequently, followed by nurses and physicians. Among midwives, a higher number of proposed tests was associated with the perception that HIV testing does not require specific consent compared to other diseases (aOR 4.00 [95% CI 1.37–14.29]). Among nurses, having received HIV training and the presence of community HIV counselors were associated with a higher number of proposed tests (aOR 2.01 [1.31–3.09] and aOR 1.75 [1.14–2.70], respectively). For physicians, the presence of a voluntary testing center was associated with a higher number of proposed tests (aOR 1.69 [1.01–2.86]). PITC practices and barriers differed across professions. Beyond improving environmental opportunities such as dedicated staff or services, strengthening the motivations and capabilities of healthcare professionals to propose testing could improve PITC coverage.
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  • Kouadio Brou Alexis, Carillon Séverine, Bekelynck Anne, Assi Adjoa Nelly Assoumou, Danel Christine, Ouantchi Honoré, Doumbia Mohamed, Koné Mariatou, Larmarange Joseph et Anrs 12323 Équipe projet DOD-CI (2020) « Dépistage du VIH hors les murs en Côte d’Ivoire : des prestataires communautaires sous pression », Sante Publique, Vol. 32 (1) (juin 29), p. 103-111. https://www.cairn.info/revue-sante-publique-2020-1-page-103.htm.
    Résumé : Contexte : Les stratégies de dépistage du virus de l’immunodéficience humaine (VIH) « hors les murs » ont fortement contribué à augmenter le nombre des personnes connaissant leur statut sérologique en Afrique subsaharienne. Cet article analyse l’articulation entre les exigences des bailleurs et les contraintes du terrain dans le cadre de la mise en oeuvre du dépistage hors les murs en Côte d’Ivoire. Méthodes : Une recherche qualitative a été menée dans trois districts sanitaires de Côte d’Ivoire (Man, Cocody-Bingerville et Aboisso) en 2015-2016. Les données étaient issues d’entretiens conduits auprès de prestataires communautaires d’organisations non gouvernementales (ONG) d’exécution, et de personnes dépistées, ainsi que par l’observation d’activités de dépistage du VIH hors les murs. Résultats : Les organisations d’exécution se sentent « sous pression » face aux objectifs des bailleurs jugés inatteignables et au déficit de formation et de financement. Dès lors, les prestataires n’observent pas systématiquement les règles en matière de conseil, consentement éclairé et confidentialité, dites des « trois C », et dépistent des personnes « hors cibles » (géographiques et populationnelles). Discussion : Deux types de contraintes pèsent sur les ONG d’exécution : celles issues du fonctionnement de l’aide internationale (financements inadéquats par rapport aux coûts réels, objectifs trop élevés, chaîne d’intermédiaires importante) et celles liées au contexte local (espaces non adaptés pour garantir la confidentialité et activité professionnelle des populations cibles). Conclusion : Les pressions que subissent à différents niveaux les ONG d’exécution se font au détriment de la qualité du dépistage. Il apparaît aujourd’hui essentiel de développer une approche plus qualitative dans la définition des stratégies et de ses critères d’évaluation.
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  • Larmarange Joseph (2020) « Catégories épidémiologiques, catégories sociales et catégories d'actions : doit-on repenser les "populations clés" de la lutte contre le VIH ? » (communication orale), présenté à Conférence Anthropo-Med "Dissonances et Convergences entre Anthropologie et Santé Publique", Marseille. https://imera.univ-amu.fr/fr/conference-anthropo-med-dissonances-convergences-entre-anthropologie-sante-publique.
    Résumé : Dans de nombreux pays, les populations clés (en particulier les hommes ayant des rapports sexuels avec d'autres hommes, les professionnel(le)s du sexe et les consommateurs de drogues) sont massivement touchées par le VIH et de nombreux programmes se concentrent sur elles. En raison de la modélisation épidémiologique et de la planification des politiques, ces groupes sont trop souvent considérés comme des groupes socialement homogènes plutôt que des catégories hétérogènes aux contours flous. Les identités, la vie sociale, les pratiques sexuelles, l'exposition au VIH varient au sein de ces groupes, en particulier entre le noyau et les périphériques. Leurs réseaux sexuels sont également interconnectés avec des personnes qui ne sont pas perçues comme appartenant à ces "populations clés" : partenaires féminines d'hommes bisexuels, partenaires réguliers et clients de professionnel(le)s du sexe, partenaires sexuels de consommateurs de drogues... Entre les catégories épidémiologiques, les catégories sociales et identitaires et les catégories d'action, comment pouvons-nous appréhender la diversité des populations clés ? La notion de populations périphériques peut-elle faire sens ? Quel est le rôle de ces populations périphériques dans la dynamique des populations clés et comment les prendre en compte dans la riposte au VIH ?
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  • Larmarange Joseph (2020) « Le Traitement antirétroviral comme moyen de prévention (TasP) », in VIH, Hépatites virales, Santé sexuelle, par Christine Katlama, Jade Ghosn, et Gilles Wandeler, Paris : AFRAVIH, EDP sciences, p. 702-711. ISBN : 978-2-7598-2403-8. https://www.livre-afravih.org/.


  • Larmarange Joseph (2020) « Prévention du VIH - Introduction », in VIH, Hépatites virales, Santé sexuelle, par Christine Katlama, Jade Ghosn, et Gilles Wandeler, Paris : AFRAVIH, EDP sciences, p. 683-686. ISBN : 978-2-7598-2403-8. https://www.livre-afravih.org/.

  • Petersen Maya, Larmarange Joseph, Wirth Kathleen E, Skalland Timothy, Ayles Helen, Kamya Moses, Lockman Shahin, Iwuji Collins, Dabis François, Makhema Joseph, Havlir Diane, Floyd Sian, Hayes Richard et UT3C Consortium (2020) « Population-level Viremia Predicts HIV Incidence across the Universal Test and Treat Studies » (communication orale), présenté à Conference on Retroviruses and Opportunitic Infections (CROI), Boston. http://www.croiconference.org/sessions/population-level-viremia-predicts-hiv-incidence-across-universal-test-treat-studies.
    Résumé : Improved understanding of the extent to which increased population-level viral suppression will reduce HIV incidence is needed. Using data from four large Universal Test and Treat Trials, we evaluated the relationship between viremia and incidence and its consistency across epidemic contexts. We analyzed data from 105 communities in the PopART (21 communities in South Africa and Zambia, ~ 25,000 adults each), BCPP (30 communities in Botswana, ~3,600 adults each), ANRS 12249 TasP (22 communities in South Africa, ~1,300 adults each) and SEARCH (32 communities in Uganda and Kenya, ~5,000 adults each) studies. Communities ranged from rural to urban and varied in the mobility of their populations and their sex ratio (~30% to 50% male). HIV incidence was measured via repeat testing between 2012-2018. Population viremia ­– % of all adults (HIV+ or HIV-) with HIV viremia – was estimated at midpoint of follow-up based on HIV prevalence and non-suppression among HIV+, with adjustment for differences between the measurement cohort and underlying population. Community-level regression, adjusted for study, was used to quantify the association between HIV incidence and viremia and to evaluate cross-study heterogeneity. HIV prevalence (measured in 257,929 total persons, PopART: 37,006; BCPP: 12,570; TasP: 20,978; SEARCH: 187,375), ranged from 2% to 40% by community. Non-suppression among HIV+ (measured in 39,928 persons, PopART: 6,233; BCPP: 2,318; TasP: 6,617; SEARCH: 16,209) ranged from 3% to 70%. HIV incidence (measured over 345,844 person-years, PopART: 39,702; BCPP: 8,551; TasP: 26,832; SEARCH: 270,759) ranged from 0.03 to 3.4 per 100PY. Population-level viremia was strongly associated with HIV incidence; pooling across studies, HIV incidence decreased by 0.07/100PY (95% CI: 0.05,0.10, p<0.001) for each 1% absolute decrease in viremia. Incidence was significantly associated with viremia in each study; however, both strength of the incidence-viremia relationship (slope) and projected incidence at 0% viremia (intercept) differed (Figure). Lower population-level HIV viremia was associated with lower HIV incidence in all four Universal Test and Treat Studies, conducted in a wide range of epidemic contexts in sub-Saharan Africa. Differences in external infection rate (due to variation in community size, mobility, and sex ratio) may have contributed to heterogeneity between studies.
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2019



  • Assoumou Nelly, Bekelynck Anne, Carillon Séverine, Kouadio Alexis, Ouantchi Honoré, Doumbia Mohamed, Larmarange Joseph et Koné Mariatou (2019) « Organisation du financement du dépistage du VIH à base communautaire en Côte d’Ivoire : une recherche d’efficience potentiellement contre-productive ? », Médecine et Santé Tropicales, 29 (3) (juillet 1), p. 287-293. DOI : 10.1684/mst.2019.0926. http://www.jle.com/fr/revues/mst/e-docs/organisation_du_financement_du_depistage_du_vih_a_base_communautaire_en_cote_divoire_une_recherche_defficience_potentiellement_contre_productive__315337/article.phtml?tab=texte.
    Résumé : Objectif. Dans le champ du VIH, le President's Emergency Plan for AIDS Relief (Pepfar) et le Fond mondial de lutte contre le VIH/sida, la tuberculose et le paludisme ont accentué leurs politiques de gestion des financements qui reposent sur la définition d’indicateurs mesurables, la fixation d’objectifs à atteindre, les comptes rendus rapportage et le contrôle des activités. Cet article vise à montrer la manière dont ces nouvelles formes de gestion des financements, dont l’objectif premier est d’améliorer l’efficience des programmes, ont un impact sur la mise en œuvre locale des activités, à travers l’exemple du dépistage du VIH à base communautaire. Méthodes. Dans trois districts sanitaires de la Côte d’Ivoire, nous avons réalisé en 2015 et 2016 une cartographie des acteurs impliqués dans le dépistage communautaire et dix-huit entretiens semi-directifs. Résultats. Le financement des organisations en charge du dépistage au niveau local transite par des organisations intermédiaires selon un système pyramidal complexe. Combiné à la lourdeur des comptes rendus d’activité et de la validation des données, cela génère des retards dans le décaissement des fonds et réduit fortement le temps effectif de mise en œuvre des activités. Ce processus produit ainsi ses propres effets contre-productifs contre lesquels il était censé lutter, au désavantage des activités de dépistage. La faible marge de manœuvre des acteurs locaux dans l’élaboration des projets conduit à des écarts entre les objectifs visés et les réalités de terrain. Mots clés : financement, dépistage du VIH, Côte d’Ivoire
    Mots-clés : ⚠️ Invalid DOI.
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  • Becquet Valentine et Larmarange Joseph (2019) « La Santé des travailleuses du sexe en Afrique subsaharienne : une population toujours exposée au VIH et soumise à de multiples vulnérabilités » (communication orale), présenté à 2e congrès international de l'Institut du Genre, Anger. https://congresgenre19.sciencesconf.org/.
    Résumé : Les travailleuses du sexe (TS) constituent une des populations prioritaires des programmes de lutte contre le VIH. Pendant longtemps, le focus a été la promotion du préservatif et, dans les années 2000, le dépistage et le traitement des TS infectées. Ces politiques ont-elles véritablement enrayé la vulnérabilité de ces femmes ? Cette communication présentera des résultats issus d'entretiens menés en 2016 (projet ANRS 12361 PrEP-CI) sur différents sites prostitutionnels d'Abidjan et de San Pedro. Les TS sont en réalité exposées au VIH dans de nombreuses situations, notamment avec leurs partenaires réguliers, avec des clients les agressant ou payant davantage d'argent pour un rapport non protégé. Leur faible pouvoir de négociation s'inscrit dans un contexte de domination masculine. À ces vulnérabilités de genre s'ajoutent les vulnérabilités matérielles liées à leurs conditions de travail. Leur mobilité importante pour contourner leur marginalisation sociale est également un facteur de fragilisation. Les nouveaux outils de prévention tels que la prophylaxie préexposition pourraient selon certains compenser ces vulnérabilités et contribuer à leur émancipation en termes de santé. Si cet outil pourrait être approprié, il convient cependant de ne pas considérer ces femmes uniquement au prisme du VIH, puisqu'elles ont de nombreux autres besoins en santé sexuelle et reproductive et font face plus globalement à un problème d'accès aux droits humains fondamentaux.
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  • Becquet Valentine, Nouaman Marcellin, Plazy Mélanie, Masumbuko Jean-Marie, Anoma Camille, Kouamé Soh, Danel Christine, Eholié Serge et Larmarange Joseph (2019) « Sexual health needs of female sex workers reached by two NGOs in Côte d’Ivoire: considerations for the future implementation of PrEP » (communication orale), présenté à AIDS Impact, London. http://www.aidsimpact.com/abstracts/-LZFgxedD3IcXCPGWlOB.
    Résumé : Aim In West Africa, most countries have mixed HIV epidemics; new tools such as pre-exposure prophylaxis (PrEP) should target in priority most affected populations, particularly female sex workers (FSWs). This paper describes sexual and reproductive health (SRH) needs of FSWs in Côte d’Ivoire to inform the future implementation of PrEP in this population. Method/Issue The ANRS 12361 PrEP-CI cross-sectional and mixed-methods study was designed and implemented with two Ivorian community-based organizations. 1000 FSWs completed a standardized questionnaire assessing women’s sociodemographic characteristics, sexual practices and behaviors, use of community health services, a priori acceptability of PrEP. Twenty-two in-depth interviews and eight focus group discussions were conducted at prostitution sites. FSWs were interviewed about risky practices and sexual behaviors, experiences with violence and discrimination, attitudes regarding HIV and sexually transmitted infections (STIs), and barriers to SRH services. Results/Comments The quantitative and qualitative results showed that FSWs were highly exposed to HIV despite their use of condoms with clients. 91% did not use condoms with their regular partner, despite their acknowledged concurrent sexual partnerships. 23% accepted condomless sexual intercourse for a large sum of money, especially when they had had few previous clients. Moreover, FSWs faced many unmet needs regarding SRH beyond HIV prevention and treatment. Inconsistent condom use exposed FSWs to STIs and undesired pregnancies. However, the prevalence of contraceptive use was low (40%) due to fear of contraception causing sterility. FSWs faced obstacles in accessing SRH care and preferred advice from their peers or self-medication. Discussion Implementing PrEP among FSWs in West Africa, such as in Côte d’Ivoire, constitutes an opportunity to consider the chronic follow-up of HIV-negative FSWs. PrEP initiation should not condition access to SRH services; conversely, SRH services could be a way to attract FSWs into practicing HIV prevention. Our results highlight the importance of developing a people-focused approach that integrates all SRH needs when transitioning from PrEP efficacy trials to implementation.
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  • Bekelynck Anne, Carillon Séverine, Assoumou Nelly, Kouadio Alexis, Danel Christine, Ouantchi Honoré, Koné Mariatou et Larmarange Joseph (2019) « Pepfar 3.0’s HIV testing policy in Côte d’Ivoire (2014-2018): a changing strategy between improvement of testing yield and achievement of the first 90? » (communication orale), présenté à AIDS Impact, London. http://www.aidsimpact.com/abstracts/-LZtWmf5VK5Jr8HC_KPj.
    Résumé : Aim Since 2014, the Pepfar has initiated its phase III called ‘Pepfar 3.0’ (2014- now), focusing on ‘Sustainable Control of the Epidemic’, to reach the Joint United Nations Programme on HIV/AIDS’ (UNAIDS) 90-90-90 goal. In this strategic plan, the Pepfar states that it is “pivoting to a data-driven approach that strategically targets geographic areas and populations where [they could] achieve the most impact for [their] investments”. In practice, how were these new targeted HIV screening strategies developed and what were the challenges encountered? Method/Issue We conducted a qualitative study in Côte d’Ivoire in 2015-2018, a country where the HIV program is mainly funded by the Pepfar (73% in 2018). In-depth interviews were conducted with stakeholders in the AIDS public response: CDC/Pepfar (3), Ministry of Health (3), intermediary NGOs (7); and we observed public meetings (nb). In addition, the grey literature of Pepfar (Country Operational Plan – COP, https://www.pepfar.gov/) was reviewed to describe the evolution of Pepfar’s HIV testing strategies from COP 14 to COP 17 (October 2014 – September 2018). Results/Comments Since the COP 14, Pepfar’s HIV testing strategies have been characterized by significant variations: (i) in the targets of the number of people and of HIV positive people to be screened, divided by 2 between COP 14 and COP 15 and multiplied by 4.5 between COP 15 and COP 17; (ii) in the targeted geographical areas, from a regional breakdown to an identification of health districts at high and low impact; and (iii) in the targeted sub-groups, from a focus on key populations to a broader definition of priority populations, including men over 25 years old. A shift was observed in the definition of testing targets, with less room dedicated to programmatic data and feedbacks from field actors and an increasing focus on the use of modelling work to estimate and disaggregate the targets by geographical units and sub-population (even if available data at these fine levels was limited and uncertain); increasingly leading to gaps between targets and results. While the aim of COP 14 and COP 15 seemed to be the improvement of testing efficacy in general and testing yield (i.e. testing positivity rate) in particular, COP 16 and 17 have given priority to fill the gaps in terms of the first 90 (i.e. reducing proportion of PLHIV being undiagnosed). Discussion This study highlights how the Pepfar approach has been changing over the last 5 years as a result of the tension between improving HIV testing yield and achieving the first 90 (90% of PLHIV being diagnosed) in the context of a mixed epidemic, combined with a context of limited resources implying to improve the “value for money” of policies. This study also underlines the limited possibility of very rapidly evolving strategies by the donor - emphasised by the annual system of COPs - in a context where actors have different adaptive capacities. The emphasis on targets to reach tends to underestimate the political and social modalities of
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  • Bekelynck Anne et Larmarange Joseph (2019) « Pepfar 3.0’s HIV testing policy in Côte d'Ivoire (2014 to 2018): fragmentation, acceleration and disconnection », Journal of the International AIDS Society, 22 (12), p. e25424. DOI : 10/ggnfm9. https://onlinelibrary.wiley.com/doi/abs/10.1002/jia2.25424.
    Résumé : Introduction HIV Testing and Counselling (HTC) remains a key challenge in achieving control of the HIV epidemic by 2030. In the early 2010s, the President's Emergency Plan for AIDS Relief (Pepfar) adopted targeted HTC strategies for populations and geographical areas most affected by HIV. We examine how Pepfar defined targeted HTC in Côte d'Ivoire, a country with a mixed HIV epidemic, after a decade of expanding HTC services. Methods We explored the evolution of HTC strategies through the Country Operational Plans (COP) of Pepfar during its phase 3.0, from COP 14 to COP 17 (October 2014 to September 2018) in Côte d'Ivoire. We conducted an analysis of the grey literature over the period 2014 to 2018 (Budget & Target Report, Strategic Direction Summary, Sustainability Index and Dashboard Summary, https://data.pepfar.gov). We also conducted a qualitative study in Côte d'Ivoire (2015 to 2018) using in-depth interviews with stakeholders in the AIDS public response: CDC/Pepfar (3), Ministry of Health (3), intermediary NGOs (7); and public meeting observations (14). Results Since the COP 14, Pepfar's HIV testing strategies have been characterized by significant variations in terms of numerical, geographical and population targets. While the aim of COP 14 and COP 15 seemed to be the improvement of testing efficacy in general and testing yield in particular, COP 16 and COP 17 prioritized accelerating progress towards the “first 90” (i.e. reducing the proportion of people living with HIV who are unaware of their HIV). A shift was observed in the definition of testing targets, with less focus on the inclusion of programmatic data and feedback from field actors, and greater emphasis on the use of models to estimate and disaggregate the targets by geographical units and sub-populations (even if the availability of data by this disaggregation was limited or uncertain); increasingly leading to gaps between targets and results. Conclusions These trials and tribulations question the real and long-term effectiveness of annually-revised, fragmented strategies, which widen an increasing disparity between the realities of the actors on the ground and the objectives set in Washington.
    Mots-clés : Africa, COP (Country operational Plan), Côte d'Ivoire, Health policy, HIV testing, Pepfar.
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  • Calmettes Sophie et Larmarange Joseph (2019) « ATLAS : implementing and evaluating HIV self-testing in West Africa - an example of Community-based Action Research » (communication orale), présenté à Pre-confernence "Community-based Action Research : What can we learn from the HIV field experiences from the Global North and the Global South ?" at 12th European Public Health Conference, Marseille. https://ephconference.eu/2019-pre-conference-208.

  • Carillon Séverine, Bekelynck Anne, Assoumou Nelly, Kouadio Alexis, Danel Christine, Ouantchi Honoré, Koné Mariatou et Larmarange Joseph (2019) « “We need incentives!” Health care professionals’ reluctance to propose systematically HIV testing during general consultation in Cote d’Ivoire » (poster), présenté à AIDS Impact, London. http://www.aidsimpact.com/abstracts/-LZtpxecQfo45SlC9BNU.
    Résumé : Aim To increase access to HIV testing, WHO recommended in 2007 provider-initiated HIV testing using a simplified but still exceptional approach in terms of pre-test counseling and consent. Cote d’Ivoire accepted in 2009 systematic HIV testing proposal in all medical consultations, irrespective of reasons. What are health care professionals (HCPs) perceptions and experiences related to testing proposal? Method/Issue An ethnographic multi-site study was conducted in 3 general medical services (urban, semi-urban, rural) in 2 Ivorian health districts: 37 in-depth interviews with HCPs and 200 observed medical consultations (general medicine). A thematic analysis was performed on HCPs’ practices and discourses. Results/Comments The proportion of patients offered an HIV test was low (around 20%), due to HCPs’ reluctance to propose an HIV test in the absence of clinical suspicion. When offered, HIV test was more often prescribed than proposed. The analysis revealed 4 types of explanations in HCPs discourses. (1) Due to stigma associated to HIV, HCPs feared a negative reaction from their patients: refusal, offence, distrust, loss of patients. (2) Time-consuming specificity of HIV testing in terms of counseling, consent and administrative procedure (separate record and dedicated prescription) is perceived by HCPs as not useful and inducing a work overload that should be financially compensated or realized by dedicated providers, as it was before 2009. (3) In the absence of clinical suspicion, they considered that proposing an HIV test during a general consultation is not medically justified and not their priority. (4) Finally, HCPs felt that they are not sufficiently trained. Discussion HCPs experiences and perceptions are negatively affected by the legacy of the successive HIV policies implemented since the beginning of the epidemy. Some complex procedures, historically implemented due to confidentiality and stigma issues, could maybe be simplified today. Integrating HIV testing in routine is a challenge considering that these activities were previously implemented with dedicated incentives, training and human resources. In a context of limited resources and mixed epidemic, how to prioritize and reorganize HIV testing in general consultations while motivating HCPs and being efficient in terms of public health?
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  • Doumenc Aïdara Clémence et Larmarange Joseph (2019) « ATLAS Project : adapting HIVST distribution models in West Africa to reach those left behind » (communication orale), présenté à 20th ICASA, Kigali. https://www.icasa2019rwanda.org/.


  • Gosset Andréa, Protopopescu Camelia, Larmarange Joseph, Orne-Gliemann Joanna, McGrath Nuala, Pillay Deenan, Dabis François, Iwuji Collins et Boyer Sylvie (2019) « Retention in Care Trajectories of HIV-Positive Individuals Participating in a Universal Test-and-Treat Program in Rural South Africa (ANRS 12249 TasP Trial) », JAIDS Journal of Acquired Immune Deficiency Syndromes, 80 (4) (avril 1), p. 375. DOI : 10/gftjcf. https://journals.lww.com/jaids/Fulltext/2019/04010/Retention_in_Care_Trajectories_of_HIV_Positive.2.aspx.
    Résumé : Objective: To study retention in care (RIC) trajectories and associated factors in patients eligible for antiretroviral therapy (ART) in a universal test-and-treat setting (TasP trial, South Africa, 2012–2016). Design: A cluster-randomized trial whereby individuals identified HIV positive after home-based testing were invited to initiate ART immediately (intervention) or following national guidelines (control). Methods: Exiting care was defined as ≥3 months late for a clinic appointment, transferring elsewhere, or death. Group-based trajectory modeling was performed to estimate RIC trajectories over 18 months and associated factors in 777 ART-eligible patients. Results: Four RIC trajectory groups were identified: (1) group 1 “remained” in care (reference, n = 554, 71.3%), (2) group 2 exited care then “returned” after [median (interquartile range)] 4 (3–9) months (n = 40, 5.2%), (3) group 3 “exited care rapidly” [after 4 (4–6) months, n = 98, 12.6%], and (4) group 4 “exited care later” [after 11 (9–13) months, n = 85, 10.9%]. Group 2 patients were less likely to have initiated ART within 1 month and more likely to be male, young (<29 years), without a regular partner, and to have a CD4 count >350 cells/mm3. Group 3 patients were more likely to be women without social support, newly diagnosed, young, and less likely to have initiated ART within 1 month. Group 4 patients were more likely to be newly diagnosed and aged 39 years or younger. Conclusions: High CD4 counts at care initiation were not associated with a higher risk of exiting care. Prompt ART initiation and special support for young and newly diagnosed patients with HIV are needed to maximize RIC.
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  • Inghels Maxime, Kra Kouassi Arsène, Niangoran Serge, Bekelynck Anne, Carillon Séverine, Danel Christine, Sika Lazare, Koné Mariatou, Desgrées du Loû Annabel et Larmarange Joseph (2019) « Cascade of provider-initiated HIV testing and counselling at specific life events (pregnancy, STIs, marriage plan) in Côte d’Ivoire » (poster), présenté à AIDS Impact, London. http://www.aidsimpact.com/abstracts/-LZpZjJNQzSUV6vuH4Ku.
    Résumé : Aim In Côte d’Ivoire, only 57.8% of women and 37.0% of men have been HIV-tested at least once, which is insufficient to control the epidemic. The objective of this study is to describe at a population level if an HIV test was offered and performed at specific life-events where provider-initiated HIV testing is recommended. Method/Issue A cross-sectional telephone survey was conducted in 2017 among a representative sample of 3 867 individuals from the general population in Côte d'Ivoire. For each individual, the occurrence of the following events over the past 5 years was documented: birth of a child, Sexually Transmitted Infections—STIs, marriage. For each of these events, they were asked (i) if they have consulted a health professional, (ii) if they were offered an HIV test during that consultation and (iii) if they accepted it. The factors associated with each of these three steps were analyzed in separate logistic regression models stratified by type of event. Results/Comments While 63.7% of women were HIV-tested during their last pregnancy, only 16.9% of men were tested during their partner’s last pregnancy and this proportion fell to 13.4% for people with an STI and 14.5% for people who got married. These levels of HIV testing were mainly driven by a lack of medical consultation (except for pregnant women) and a lack of testing proposal (except for pre-marital check-up). Testing acceptability was high. Discussion Improving HIV testing coverage in Côte d’Ivoire requires (i) facilitating attendance to health services in case of STIs, marriage plans and pregnancy—for men—and (ii) strengthening routine testing proposal during these occasions.
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  • Inghels Maxime, Kra Kouassi Arsène, Niangoran Serge, Bekelynck Anne, Carillon Séverine, Sika Lazare, Danel Christine, Koné Mariatou, Desgrées du Loû Annabel et Larmarange Joseph (2019) « Practices and Barriers to Provider-initiated HIV Testing and Counseling (PITC) among Midwives, Nurses and Physicians in Côte d'Ivoire » (poster WEPEC215), présenté à 20th ICASA, Kigali. http://www.professionalabstracts.com/icasa2019/iplanner/#/presentation/2236.
    Résumé : Background: Despite the implantation of Provider Initiated Testing and Counselling (PITC) in 2009, testing proposal remains lows in Cote d'Ivoire, even in recommended situations. The purpose of this study is to identify the practices and obstacles to PITC among midwives, nurses and physicians in Côte d´Ivoire. Methods: A nationally representative cross-sectional survey was conducted in 2018 by telephone among three separate samples of midwives, nurses and physicians practicing in Côte d´Ivoire. The number of HIV tests proposed during consultation in the month preceding the survey was collected for each professional. Factors associated with the number of proposed tests were identified through ordinal logistic regression models. These factors were classified in three dimensions according to the conceptual framework of work performance (Motivation-Capability-Opportunity). Results: A total of 298 midwives, 308 nurses and 289 physicians were interviewed. Midwives proposed the test more frequently, followed by nurses and physicians. Among midwives, a higher number of proposed test was associated with the perceptions (motivation dimension) that HIV testing do not require a specific consent compared to other diseases (aOR 4,00 [95% CI 1.37-14.29]). Among nurses, having received a HIV training (i.e. capability) and the presence of community HIV counselors (i.e. opportunity) was associated with a higher number of proposed tests (aOR 2.03 [1.33-3.12] and aOR 1.86 [1.21-2.87] respectively). For physicians, the presence of a voluntary testing center (i.e. opportunity) was associated with a higher number of proposed tests (aOR 1.69 [1.01-2.86]). Conclusion: PITC practices and barriers were different across professions. Beyond improving environmental opportunities such as dedicated staff or services, strengthening the motivations and capabilities of healthcare professionals to propose testing could improve PITC coverage.
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  • Larmarange Joseph (2019) « De PrEP-CI à PRINCESSE… construction d’une offre en santé sexuelle et reproductive à destination des travailleuses du sexe en Côte d’Ivoire » (communication orale), présenté à Journée d'études “La Recherche en sciences sociales sur la prophylaxie pré-exposition (PrEP)”, Paris. https://shsvih.hypotheses.org/1442.


  • Larmarange Joseph (2019) « Ggplot2 ou la grammaire des graphiques sous R » (communication orale), présenté à Rencontres de statistique appliquée de l'Ined, Paris. DOI : 10/gf3z26. https://larmarange.github.io/seminaire-INED-18juin2019/diaporama.html.
    Résumé : R possède un puissant moteur graphique interne. Toutefois, produire un graphique complet avec les fonctions basiques de R est peu aisée. L’extension ggplot2, développée par Hadley Wickham et mettant en œuvre la grammaire des graphiques théorisée par Leland Wilkinson, est devenue en quelques années l’une des extensions R les plus utilisées. La grammaire des graphiques invite l’utilisateur à repenser sa manière de concevoir un graphique en associant variables (données), paramètres graphiques (esthétiques) et formes géométriques, puis en complexifiant progressivement son graphique (coordonnées, échelles, facettes, étiquettes, légendes, thèmes…).
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  • Larmarange Joseph (2019) « The edges of key populations: how to think, describe and reach these hidden groups? » (communication orale en session plénière), présenté à AIDS Impact, London. http://www.aidsimpact.com/abstracts/-LcerHcNPqtU5HdgnxjE.
    Résumé : In many settings, key populations (in particular men having sex with other men, sex workers and drug users) are overwhelmingly affected by HIV and many programs are focusing on them. Due to epidemiological modelling and policy planning, these groups are too often seen as socially homogeneous groups rather than heterogeneous categories with fuzzy outlines. Identities, social life, sexual practices, exposure to HIV varies within these groups, in particular between the core and the edges. Their sexual networks are also connected to individuals not perceived as “key populations”: female partners of bisexual men, regular partners and clients of sex workers, sexual partners of drug users… Could we better conceptualize the edges of key populations? What do we know about them? What is their role in the dynamic of HIV epidemics? How can we include them in the HIV response? Are some interventions more relevant to reach them?
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  • Larmarange Joseph (2019) « Quelle place pour les autotests VIH dans les pays à faibles ressources ? » (communication orale), présenté à AFRAMED, Casablanca. http://www.aframed2019.org.
  • Larmarange Joseph (2019) « Les travailleuses du sexe en Afrique de l'Ouest, une population impliquée dans la dynamique de l'épidémie : des études observationnelles à PRINCESSE » (communication orale), présenté à Séminaire ANRS : Recherches sur le VIH/sida et les hépatites virales, quels nouveaux enjeux ?, Paris.


  • Larmarange Joseph, Diallo Mamadou H, McGrath Nuala, Iwuji Collins, Plazy Mélanie, Thiébaut Rodolphe, Tanser Frank, Bärnighausen Till, Orne-Gliemann Joanna, Pillay Deenan, Dabis François et ANRS 12249 TasP Study Group (2019) « Temporal trends of population viral suppression in the context of Universal Test and Treat: the ANRS 12249 TasP trial in rural South Africa », Journal of the International AIDS Society, 22 (10) (octobre 22), p. e25402. DOI : 10/ggnfnr. https://onlinelibrary.wiley.com/doi/full/10.1002/jia2.25402.
    Résumé : Abstract Introduction The universal test-and-treat (UTT) strategy aims to maximize population viral suppression (PVS), that is, the proportion of all people living with HIV (PLHIV) on antiretroviral treatment (ART) and virally suppressed, with the goal of reducing HIV transmission at the population level. This article explores the extent to which temporal changes in PVS explain the observed lack of association between universal treatment and cumulative HIV incidence seen in the ANRS 12249 TasP trial conducted in rural South Africa. Methods The TasP cluster-randomized trial (2012 to 2016) implemented six-monthly repeat home-based HIV counselling and testing (RHBCT) and referral of PLHIV to local HIV clinics in 2 ? 11 clusters opened sequentially. ART was initiated according to national guidelines in control clusters and regardless of CD4 count in intervention clusters. We measured residency status, HIV status, and HIV care status for each participant on a daily basis. PVS was computed per cluster among all resident PLHIV (≥16, including those not in care) at cluster opening and daily thereafter. We used a mixed linear model to explore time patterns in PVS, adjusting for sociodemographic changes at the cluster level. Results 8563 PLHIV were followed. During the course of the trial, PVS increased significantly in both arms (23.5% to 46.2% in intervention, +22.8, p < 0.001; 26.0% to 44.6% in control, +18.6, p?
    Mots-clés : antiretroviral therapy, HIV, population health, retention in care, South Africa, sustained viral suppression.
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  • Larmarange Joseph (2019) « Conférence mondiale sur le VIH-Sida à Mexico : « l'autotest » testé en Afrique »Simon Rozé, RFI (Radio france internationale). http://www.rfi.fr/science/20190723-vih-sida-congres-scientifique-mexique-questions-venezuela-cote-ivoire.
  • Nouaman Marcellin, Becquet Valentine, Masumbuko Jean-Marie, Anoma Camille, Soh Kouamé, Plazy Mélanie, Danel Christine, Eholié Serge et Larmarange Joseph (2019) « Female sex workers and HIV acquisition in Côte d’Ivoire: the burden of precariousness and working conditions (ANRS 12361 PREP-CI) » (poster discussion), présenté à INTEREST Workshop, Accra.
    Résumé : Background Female sex workers (FSW) are a population at high risk of HIV acquisition. New tools to diagnose recent HIV infection may be used to better describe risk of HIV acquisition in this group. The ANRS 12361 PrEP-CI project aimed to estimate HIV incidence and describe risk factors among FSW in Côte d'Ivoire. Methods The study was conducted between September 2016 and March 2017 among FSW aged ≥18 years old in Abidjan and San Pedro. Two rapid tests for recent HIV infection (Determine®, Alere and Vikia®, bio Mérieux) were offered to FSW; in case of positive result, a dried blood sport was collected and window period of infection determined using a test for recent infection (EIA-RI) adapted to the Ivorian context. A standardized sociodemographic questionnaire was then administered to FSW by female peer educators, completed with qualitative interviews and focus groups with 60 FSW. Results 1000 SW (400 in San Pedro and 600 in Abidjan) with a median age of 25 years (interquartile range: 21-29) were included in the study and screened for HIV. Of these, 39 were diagnosed with HIV, 7 of which were newly infected (mean duration of infection was 113 days), corresponding to an HIV incidence of 2.3% [95% confidence interval: 1.6 - 3.1%]. The incidence was higher in San Pedro (3.3% [2.2-4.5]) than in Abidjan (1.6% [1.1-2.2]); this can be explained by qualitative data in which FSW in San Pedro expressed difficulties (distance, time, costs ...) in accessing health care services and prevention methods, particularly regarding condoms. HIV infection was also associated with vulnerability: the incidence was higher among those who charged ≤ 2000 CFA francs per intercourse (3.3% vs. 0.7%), those who performed on the streets or in hotels (5.4% and 4.2%, respectively, vs. 3.9% in brothel and 0.8% in bar – drinking spot), and among those who had more than 5 clients the last working day (6.1% vs. 1.8% among those who had under 5 clients) and who could be more difficult to identify and refer to HIV prevention services by female peer educators. Finally, FSW under <25 years old were at higher risk of infection (2.8%) than older ones (1.8%), and HIV incidence was associated with other sexually transmitted infections (STI) (2.5% in those who had ≥ 1 STI in the last 12 months vs. 1.9%). Contrary to expectations, an extensive sex work experience did not reduce exposure to HIV, when we compared FSW who had been working for more than 3 years with the ones who had newly arrived in the sex work industry (2.5% vs. 2.0%). Conclusion This study is one of the first to estimate HIV incidence in Côte d'Ivoire among FSW. This key population is much more exposed than the rest of the general population (2.3% vs. 0.06% estimated by UNAIDS). New infections seem to concentrated among younger FSW in precarious situations and working in remote areas, such as San Pedro area. These vulnerable subgroups should therefore be a priority target for prevention programs such as pre-exposure prophylaxis (PrEP) as recommended by WHO.
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  • Pannetier Julie, Marsicano Élise, Larmarange Joseph et Broqua Christophe (2019) « Homo/bisexualités et migrations de l'Afrique subsaharienne à la France : quelles émancipations ? » (communication orale), présenté à 2e congrès international de l'Institut du Genre, Anger. https://congresgenre19.sciencesconf.org/.
    Résumé : Dans une majorité de pays d'Afrique subsaharienne, les pratiques homosexuelles sont socialement condamnées, voire illégales. La migration vers un pays d'Europe peut constituer une opportunité de vivre différemment son homo-bisexualité, et ce, que la question de l'homosexualité soit ou non le moteur de la migration. Les liens entre homo/bisexualités et migrations ont jusqu'ici été peu explorés. Quelles sont les trajectoires des personnes migrantes ayant eu des relations homosexuelles au cours de leur vie ? Comment les relations avec des partenaires de même sexe s'inscrivent-elles dans les trajectoires relationnelles dans le pays d'origine et en contexte migratoire ? Dans quelle mesure la migration influe-t-elle sur les relations affectives et sexuelles ? Donne-t-elle accès à de meilleures conditions de vie et/ou de soins ? Nous souhaitons travailler ces questions à partir de l'enquête Parcours 2012-2013 qui porte sur les migrations subsahariennes en Île-de-France et la santé de ces populations, notamment les pathologies VIH et l'hépatite B. Dans cette enquête biographique, les parcours migratoire, résidentiel, juridique, économique, les relations affectives et sexuelles et les trajectoires de santé ont été collectés tout au long de la vie. Cela permet de reconstruire sous la forme d'un « récit de vie », le cheminement des personnes ayant déclaré au moins un partenaire de même sexe au cours de leur vie, soit 12 femmes et 23 hommes et de décrire leurs trajectoires, dans leurs diversités.
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  • Pizarro Louis et Larmarange Joseph (2019) « Dépistage des populations cibles du VIH au Mali, au Sénégal et en Côte d’Ivoire » (communication orale), présenté à 13e Rencontres Nord-Sud IMEA/IRD, Paris.


  • Rolland Matthieu, McGrath Nuala, Tiendrebeogo Thierry, Larmarange Joseph, Pillay Deenan, Dabis François, Orne-Gliemann Joanna et Group for the ANRS 12249 TasP study (2019) « No effect of test and treat on sexual behaviours at population level in rural South Africa », AIDS, 33 (4) (mars 15), p. 709. DOI : 10/gfwcxm. https://journals.lww.com/aidsonline/Abstract/2019/03150/No_effect_of_test_and_treat_on_sexual_behaviours.14.aspx.
    Résumé : Context: Within the community-randomized ANRS 12249 Treatment-as-Prevention trial conducted in rural South Africa, we analysed sexual behaviours stratified by sex over time, comparing immediate antiretroviral therapy irrespective of CD4+ cell count vs. CD4+-guided antiretroviral therapy (start at CD4+ cell count > 350 cells/μl then >500 cells/μl) arms. Methods: As part of the 6-monthly home-based trial rounds, a sexual behaviour individual questionnaire was administered to all residents at least 16 years. We considered seven indicators: sexual intercourse in the past month; at least one regular sexual partner in the past 6 months; at least one casual sexual partner in the past 6 months and more than one sexual partner in the past 6 months; condom use at last sex (CLS) with regular partner, CLS with casual partner, and point prevalence estimate of concurrency. We conducted repeated cross-sectional analyses, stratified by sex. Generalized Estimating Equations models were used, including trial arm, trial time, calendar time and interaction between trial arm and trial time. Results: CLS with regular partner varied between 29–51% and 23–46% for men and women, respectively, with significantly lower odds among women in the control vs. intervention arm by trial end (P < 0.001). CLS with casual partner among men showed a significant interaction between arm and trial round, with no consistent pattern. Women declared more than one partner in the past 6 months in less than 1% of individual questionnaires; among men, rates varied between 5–12%, and odds significantly and continuously declined between calendar rounds 1 and 7 [odds ratio = 4.2 (3.24–5.45)]. Conclusion: Universal Test and Treat was not associated with increased sexual risk behaviours.
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2018

  • Inghels Maxime, Kouassi Arsène Kra, Niangoran Serge, Bekelynck Anne, Carillon Séverine, Sika Lazare, Danel Christine, Koné Mariatou et Larmarange Joseph (2018) « Dépistage du VIH à l'initiative d'un prestataire de santé à certains moments clés de la vie : cascade et facteurs associés. Résultat de l'enquête DOD-CI ANRS 12 323 en population générale, Côte d’Ivoire » (communication orale), présenté à 9e Conférence Internationale Francophone sur le VIH et les Hépatites Virales (AFRAVIH 2018), Bordeaux.


  • Iwuji Collins C, Orne-Gliemann Joanna, Larmarange Joseph, Balestre Eric, Thiebaut Rodolphe, Tanser Frank, Okesola Nonhlanhla, Makowa Thembisa, Dreyer Jaco, Herbst Kobus, McGrath Nuala, Bärnighausen Till, Boyer Sylvie, De Oliveira Tulio, Rekacewicz Claire, Bazin Brigitte, Newell Marie-Louise, Pillay Deenan et Dabis François (2018) « Universal test and treat and the HIV epidemic in rural South Africa: a phase 4, open-label, community cluster randomised trial », The Lancet HIV, 5 (3) (mars 1), p. e116-e125. DOI : 10.1016/S2352-3018(17)30205-9. http://www.sciencedirect.com/science/article/pii/S2352301817302059.
    Résumé : Summary Background Universal antiretroviral therapy (ART), as per the 2015 WHO recommendations, might reduce population HIV incidence. We investigated the effect of universal test and treat on HIV acquisition at population level in a high prevalence rural region of South Africa. Methods We did a phase 4, open-label, cluster randomised trial of 22 communities in rural KwaZulu-Natal, South Africa. We included individuals residing in the communities who were aged 16 years or older. The clusters were composed of aggregated local areas (neighbourhoods) that had been identified in a previous study in the Hlabisa subdistrict. The study statisticians randomly assigned clusters (1:1) with MapInfo Pro (version 11.0) to either the control or intervention communities, stratified on the basis of antenatal HIV prevalence. We offered residents repeated rapid HIV testing during home-based visits every 6 months for about 4 years in four clusters, 3 years in six clusters, and 2 years in 12 clusters (58 cluster-years) and referred HIV-positive participants to trial clinics for ART (fixed-dose combination of tenofovir, emtricitabine, and efavirenz) regardless of CD4 cell count (intervention) or according to national guidelines (initially ≤350 cells per μL and <500 cells per μL from January, 2015; control). Participants and investigators were not masked to treatment allocation. We used dried blood spots once every 6 months provided by participants who were HIV negative at baseline to estimate the primary outcome of HIV incidence with cluster-adjusted Poisson generalised estimated equations in the intention-to-treat population after 58 cluster-years of follow-up. This study is registered with ClinicalTrials.gov, number NCT01509508, and the South African National Clinical Trials Register, number DOH-27-0512-3974. Findings Between March 9, 2012, and June 30, 2016, we contacted 26 518 (93%) of 28 419 eligible individuals. Of 17 808 (67%) individuals with a first negative dried blood spot test, 14 223 (80%) had subsequent dried blood spot tests, of whom 503 seroconverted after follow-up of 22 891 person-years. Estimated HIV incidence was 2·11 per 100 person-years (95% CI 1·84–2·39) in the intervention group and 2·27 per 100 person-years (2·00–2·54) in the control group (adjusted hazard ratio 1·01, 95% CI 0·87–1·17; p=0·89). We documented one case of suicidal attempt in a woman following HIV seroconversion. 128 patients on ART had 189 life-threatening or grade 4 clinical events: 69 (4%) of 1652 in the control group and 59 (4%) of 1367 in the intervention group (p=0·83). Interpretation The absence of a lowering of HIV incidence in universal test and treat clusters most likely resulted from poor linkage to care. Policy change to HIV universal test and treat without innovation to improve health access is unlikely to reduce HIV incidence. Funding ANRS, GiZ, and 3ie.
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  • Kermarec Florence et Comité d'appui (2018) Rapport d'analyse de l'étude Fos-Epseal - Saisine n° 17-DSPE-0217-1513-D du 3 mars 2017, Études et enquêtes (ISBN NET : 979-10-289-0425-8), Saint-Maurice : Santé publique France, 108 p. https://www.santepubliquefrance.fr/docs/rapport-d-analyse-de-l-etude-fos-epseal.
    Résumé : Santé publique France a été saisie par l’ARS Provence-Alpes-Côte d’Azur en mars 2017 afin d’analyser la méthode mise en oeuvre dans l’étude « Fos-Epséal » menée à Fos-sur-Mer et Port-Saint-Louis-du-Rhône et les résultats qui en sont issus sur les conséquences des expositions industrielles sur la santé des populations. Pour répondre à cette saisine, Santé publique France a constitué un comité d’appui composé de scientifiques internes et d’experts externes à l’Agence. Les points traités par ce comité ont été : l’analyse critique de la méthode et des résultats de l’étude ; l’apport de la dynamique participative proposée par l’étude. L’étude Fos-Epséal est une étude participative en santé environnement (approche dite « d’épidémiologie ancrée localement »). Elle a été réalisée par une équipe du Centre Norbert Elias de Marseille (EHESS, CNRS, Université d’Avignon, Université d’Aix-Marseille) en lien avec une équipe américaine (College of Liberal Arts and Human Sciences – Virginia Tech University, School of Public Health -University of California, Berkeley) et financée par un appel à projets de recherche de l’Anses. Le comité conclut que le rapport aurait gagné à avoir une présentation claire des méthodes utilisées et une structuration rigoureuse séparant les résultats statistiques de leur interprétation. La comparaison des résultats statistiques basés sur les déclarations des personnes interrogées à des données de référence régionales ou nationales fait apparaître des excès de risque pour plusieurs pathologies au sein de l’échantillon de populations des communes enquêtées. Toutefois, le comité a estimé que l’existence de ces excès et leur ampleur est limitée par des biais de sélection de l’échantillon enquêté, les références retenues et les méthodes d’ajustement utilisées. Malgré des faiblesses méthodologiques, les résultats présentés confirment que ce territoire nécessite une grande attention de la part des autorités publiques. Les argumentaires utilisés pour faire le lien entre un résultat sanitaire (une pathologie localement observée en excès) et une cause environnementale, présentés dans l’étude comme des « éléments d’analyse participative », doivent être considérés comme des hypothèses émises par les chercheurs et les populations, que des études ad hoc plus précises seraient en mesure de confirmer. L’intérêt porté sur les maladies qui préoccupent la population, la prise en compte de la santé telle qu’elle est exprimée par la population et les concertations mises en place lors de l’étude Fos-Epséal représentent les intérêts majeurs de cette étude. La démarche d’épidémiologie ancrée localement, fondée sur les perceptions et l’expérience des populations, apparaît complémentaire à l’approche de l’épidémiologie traditionnelle. La coexistence de ces deux approches est utile pour maintenir la crédibilité et optimiser l’efficacité du système français d’alerte en santé environnementale.
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  • Larmarange Joseph (2018) « Un même objet biographique sous l’angle de plusieurs approches méthodologiques » (communication orale), présenté à Parcours de vie et santé : apports des méthodes biographiques en santé publique, Paris. https://biographiesante2018.sciencesconf.org/.

  • Larmarange Joseph (2018) « Dépister, traiter les populations cachées » (communication orale en session plénière), présenté à 9e Conférence Internationale Francophone sur le VIH et les Hépatites Virales (AFRAVIH 2018), Bordeaux. https://www.youtube.com/watch?time_continue=48&v=SdBcT2dPgl4.

  • Larmarange Joseph (2018) « Mobility in Africa: human rights and the HIV care cascade » (communication orale TUSA1802), présenté à 22nd International AIDS Conference, Amsterdam. http://programme.aids2018.org/Programme/Session/221.
  • Larmarange Joseph (2018) « Données actuelles sur les autotests VIH et enjeux de recherche du projet ATLAS » (communication orale), présenté à 2e Journées Scientifiques Sida du Sénégal, Dakar.

  • Larmarange Joseph (2018) « Comment aborder la fin du sida ? » (communication orale), présenté à Les temporalités du sida : Collecter, conserver et exposer l’histoire sociale du VIH-sida (MUCEM), Marseille. http://www.mucem.org/programme/les-temporalites-du-sida.


  • Larmarange Joseph, Becquet Valentine, Masumbuko Jean-Marie, Nouaman Marcellin, Plazy Mélanie, Danel Christine et Eholié Serge (2018) « Implementing preexposure prophylaxis among key populations: an opportunity for patient-centered services and management of hepatitis B », AIDS, 32 (6) (mars 27), p. 829. DOI : 10/gc5r93. https://journals.lww.com/aidsonline/Fulltext/2018/03270/Implementing_preexposure_prophylaxis_among_key.17.aspx.
    Résumé : When taken properly, Tenofovir-based oral preexposure prophylaxis (PrEP) has been proven to be efficient to prevent HIV acquisition. Since 2015, PrEP is recommended by the WHO for populations at ‘substantial risk’ of HIV. However, WHO points out the need for additional research on PrEP in ‘real life’ on questions such as demand creation for oral PrEP; best delivery models in different contexts and for different populations; social and behavioral impact of PrEP; or integration of PrEP services with other services. Transitioning from efficacy trials to implementation requires to adapt interventions. Preliminary research (ANRS 12361 PrEP-CI) has been conducted in Côte d’Ivoire (CI) in collaboration with community non-governmental organizations to explore relevance and feasibility of implementing a PrEP program among female sex workers, one of the most exposed populations countrywide (estimated HIV prevalence: 29%). The following observations emerged from that collective work. All efficacy PrEP trials provided a range of sexual healthcare services in addition to PrEP drugs. Such services appeared essential for any PrEP program. By design, they were conditional to PrEP use. However, regardless of their interest in using PrEP, female sex workers interviewed in Côte d’Ivoire, and more broadly key populations worldwide, have many unmet sexual and reproductive health needs: sexually transmitted infections screening and care, contraception and birth control, menstrual management, addictions and risky behaviors… When transitioning to real life, we should not reproduce the service model of efficacy PrEP trials, that is a PrEP program with additional services. Instead, a paradigm shift toward a patient-centered approach should be preferred, that is offering sexual and reproductive health services in which PrEP is an option but not mandatory. In Western and Central Africa, the prevalence of hepatitis B is relatively high. In Cote d’Ivoire, more than 11% of new blood donors were positive for hepatitis B surface antigen in 2008–2012. Tenofovir is also used for hepatitis B treatment. But, currently, treatment is not free for monoinfected hepatitis B patients, whereas it is covered by AIDS programs for HIV-hepatitis B coinfected patients. In such context, it would be ethically unacceptable to provide free HIV PrEP without taking into account patients in needs of hepatitis B treatment. Actually, for those patients, offering Tenofovir-based HIV PrEP constitutes an opportunity to simultaneously treat their hepatitis B. It requires to integrate WHO recommendations on hepatitis B within PrEP guidelines, possibly to simplify hepatitis B care algorithms and to allow hepatitis B care in decentralized sexual health clinics and not only in hospital services. Most efficacy PrEP trials excluded hepatitis B patients. Additional clinical research exploring interactions between HIV PrEP and hepatitis B treatment, in particular the risk of flare if PrEP is stopped, is required. PrEP programs could be built on the existing community services for HIV care and treatment. Providing services for HIV positives and HIV negatives within the same clinics could be a way of minimizing the stigma associated with entry and retention into HIV care. In addition, HIV patients have unmet sexual and reproductive health needs as well. Integrating services together and transforming HIV clinics into sexual health clinics could lead to many health outcomes improvements and also to possible cost sharing and savings. So far, the focus of HIV programs has mainly been on reaching individuals never tested for HIV, identifying new positives and linking them to HIV care and treatment. Transitioning PrEP from trials to implementation constitutes an opportunity for developing people-centered approaches integrating all sexual and reproductive health services together, including hepatitis B. It is crucial to avoid a silo-based perspective in which services are separated from each other. Moving from HIV care clinics to sexual health clinics would allow to globally improve the health of key populations and their partners, beyond HIV outcomes alone. To ensure the success of new prevention programs, we have to take the next step forward. Beyond biomedical innovations, innovations in terms of intervention implementation, delivery models and public health policies are urgently required, in particular in Western and Central Africa. Scaling-up PrEP is a key moment. We should not miss out on this opportunity.
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  • Larmarange Joseph et Broqua Christophe (2018) « Les hommes bisexuels sont-ils plus exposés au VIH que les homosexuels exclusifs en Afrique subsaharienne ? » (communication orale PC16.04), présenté à 9e Conférence Internationale Francophone sur le VIH et les Hépatites Virales (AFRAVIH 2018), Bordeaux.
    Résumé : Contexte Y compris en Afrique sub-saharienne, les hommes ayant des rapports sexuels avec d‘autres hommes (HSH) sont plus à risque de s’infecter par le VIH que la population générale. Dans ce groupe, les bisexuels sont souvent perçus comme plus « à risque » que les homosexuels exclusifs et pouvant constituer une « passerelle épidémique » avec la population générale, sur la base de l’hypothèse selon laquelle les bisexuels seraient moins susceptibles de se conformer aux normes préventives que les homosexuels exclusifs. Objectif Proposer une synthèse des connaissances sur les différentes catégories d’homo-bisexuels dans les enquêtes épidémiologiques réalisées en Afrique sub-saharienne depuis 2004 et sur leur exposition au VIH. Méthodes À partir d’une revue de la littérature, nous avons retenu les publications présentant des estimations quantifiées de la bisexualité, mesurée en fonction des enquêtes selon trois dimensions : le pôle d’activité sexuelle (sexe des partenaires sexuels sur une période donnée), l’identité déclarée et l’attirance sexuelle. Nous avons examiné : (i) les taux de bisexualité calculés selon ces trois dimensions ; (ii) les taux de prévalence du VIH par groupe (et les odds-ratio correspondants) et (iii) des indicateurs de comportements selon l’orientation sexuelle. Résultats Les taux de bisexualité varient fortement d’une étude à l’autre (de 12 à 94%) et selon l’indicateur retenu. Globalement, les taux observés en Afrique de l’Ouest sont sensiblement plus élevés que ceux d’Afrique australe, l’Afrique centrale et de l’Est étant dans une situation intermédiaire. À l’exception de deux études, la prévalence du VIH observée parmi les bisexuels est inférieure à celle des homosexuels exclusifs, quelle que soit la dimension considérée pour définir ces deux groupes (voir figure). Les différences de prévalence selon l’identité déclarée sont plus marquées que selon le pôle d’activité sexuelle. La majorité des études n’ont pas relevé de différence d’utilisation du préservatif entre bisexuels et homosexuels exclusifs. Les bisexuels ont parfois une fréquence de rapports sexuels moindre et systématiquement moins de rapports anaux réceptifs que les homosexuels exclusifs. Ils ont commencé leur vie sexuelle avec les hommes plus tardivement et ont eu moins de partenaires masculins au cours de leur vie. Par contre, ils sont moins nombreux à avoir déjà fait un test de dépistage du VIH. Conclusion et recommandations La bisexualité est multiforme en Afrique sub-saharienne : les bisexuels ne constituent pas un groupe homogène et les identités sexuelles sont si diverses qu’une simple opposition homosexuels vs. bisexuels est réductrice. Toutefois, selon les enquêtes disponibles et quelle que soit la dimension considérée pour mesurer la bisexualité, les bisexuels sont moins exposés au VIH que les homosexuels exclusifs. S’il reste important que les programmes de prévention et de traitement prennent en compte les bisexuels, les homosexuels exclusifs doivent rester une cible prioritaire pour l’accès aux nouveaux outils de la prévention et du soin.
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  • Larmarange Joseph et Broqua Christophe (2018) « Continuum homobisexuel, catégories d’enquêtes et exposition au VIH en Afrique sub-saharienne » (communication orale), présenté à Journée d'étude Minorités de Genre et de Sexualité : objectivation, catégorisations et pratiques d'enquêtes, Paris. https://www.ined.fr/fr/actualites/rencontres-scientifiques/seminaires-colloques-ined/journee-etude-minorites-de-genre-et-de-sexualite/.

  • Larmarange Joseph, Diallo Mamadou Hassimiou, McGrath Nuala, Iwuji Collins, Plazy Mélanie, Thiébaut Rodolphe, Tanser Frank, Bärnighausen Till, Orne-Gliemann Joanna, Pillay Deenan, Dabis François et ANRS 12249 TasP Study Group (2018) « Temporal trends of population viral suppression in the context of Universal Test and Treat: results from the ANRS 12249 TasP trial in rural South Africa » (communication orale TUAC0103), présenté à 22nd International AIDS Conference, Amsterdam. http://programme.aids2018.org/Programme/Session/105.
    Résumé : Background: The universal test-and-treat strategy (UTT) aims to maximize the proportion of all people living with HIV (PLWHIV) on antiretroviral treatment (ART) and virally suppressed in a community, i.e. to reach population viral suppression (PVS). The ANRS 12249 TasP trial did not demonstrate an impact of universal ART on HIV incidence at population level (Lancet HIV 2017). Here, we investigated whether PVS improved during the course of the trial: differentially by arm, according to trial interventions or contextual changes. Methods: The TasP cluster-randomized trial (2012-2016) implemented six-monthly repeated home-based HIV counselling and testing (RHBCT) and referral of PLWHIV to local HIV clinics in 2×11 clusters opened sequentially. ART was initiated according to national guidelines in control clusters vs. regardless of CD4 count in intervention clusters. Test results, clinic visits, ART prescriptions, viral loads, CD4 counts, migrations and deaths were used to produce information on residency status, HIV status and HIV care status for each participant. PVS was computed daily and per cluster among all resident PLWHIV (≥16, including those not in care). We used a mixed linear model to explore the relation between PVS with calendar time, time since cluster opening, trial arm and interaction between arm and time since cluster opening, adjusting on sociodemographic changes at cluster level. Results: 8,646 PLWHIV were observed. Between January 1st, 2013 and January 1st, 2016, PVS increased significantly in both arms (intervention: 29.0% to 46.2%, +17.2, p< 0.001; control: 32.4% to 44.6%, +12.2, p < 0.001), but difference in temporal variation (+5.0%) was not significant (p=0.175). According to adjusted model (figure) this increase was mainly attributable to RHBCT (measured by time since cluster opening). They were also some effect due to contextual changes (measured by calendar time). The effect attributable to universal ART (interaction term) was limited. Conclusions: Although suboptimal, the UTT strategy implemented in TasP trial improved PVS over time. As it was mainly due to RHBCT rather than universal ART, it did not induce differences between arms, explaining the null effect observed on cumulative incidence, the main trial finding. Changes in ART initiation guidelines alone are not enough to significantly increase PVS.
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  • Larmarange Joseph, Diallo Mamadou Hassimiou, McGrath Nuala, Iwuji Collins, Plazy Mélanie, Thiébaut Rodolphe, Tanser Frank, Bärnighausen Till, Pillay Deenan, Dabis François et Orne‐Gliemann Joanna (2018) « The impact of population dynamics on the population HIV care cascade: results from the ANRS 12249 Treatment as Prevention trial in rural KwaZulu-Natal (South Africa) », Journal of the International AIDS Society, 21 (S4) (juillet 20), p. e25128. DOI : 10/gdtnhm. https://onlinelibrary.wiley.com/doi/abs/10.1002/jia2.25128.
    Résumé : Introduction The universal test and treat strategy (UTT) was developed to maximize the proportion of all HIV-positive individuals on antiretroviral treatment (ART) and virally suppressed, assuming that it will lead to a reduction in HIV incidence at the population level. The evolution over time of the cross-sectional HIV care cascade is determined by individual longitudinal trajectories through the HIV care continuum and underlying population dynamics. The purpose of this paper is to quantify the contribution of each component of population change (in- and out-migration, HIV seroconversion, ageing into the cohort and definitive exit such as death) on the HIV care cascade in the context of the ANRS 12249 Treatment as Prevention (TasP) cluster-randomized trial, investigating UTT in rural KwaZulu-Natal, South Africa, between 2012 and 2016. Methods HIV test results and information on clinic visits, ART prescriptions, viral load and CD4 count, migration and deaths were used to calculate residency status, HIV status and HIV care status for each individual on a daily basis. Position within the HIV care continuum was considered as a score ranging from 0 (undiagnosed) to 4 (virally suppressed). We compared the cascade score of each individual joining or leaving the population of resident adults living with HIV with the average score of their cluster at the time of entry or exit. Then, we computed the contribution of each entry or exit on the average cascade score and their annualized total contribution, by component of change. Results While the average cascade score increased over time in all clusters, that increase was constrained by population dynamics. Permanent exits and ageing into the people living with HIV cohort had a marginal effect. Both in-migrants and out-migrants were less likely to be retained at each step of the HIV care continuum. However, their overall impact on the cross-sectional cascade was limited as the effect of in- and out-migration balanced each other. The contribution of HIV seroconversions was negative in all clusters. Conclusions In a context of high HIV incidence, the continuous flow of newly infected individuals slows down the efforts to increase ART coverage and population viral suppression, ultimately attenuating any population-level impact on HIV incidence. Clinical Trial Number NCT01509508 (clinicalTrials.gov)/DOH-27-0512-3974 (South African National Clinical Trials Register).
    Mots-clés : Cross-sectional cascade, HIV care continuum, Migration, Population dynamics, Public health, Rural South Africa, Structural drivers.
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  • Larmarange Joseph, Diallo Mamadou Hassimiou, McGrath Nuala, Iwuji Collins, Thiébaut Rodolphe, Tanser Frank, Bärnighausen Till, Pillay Deenan, Dabis François, Orne-Gliemann Joanna et ANRS 12249 TasP Study Group (2018) « From individual care trajectories to HIV care cascade at population level in rural KwaZulu-Natal (South Africa): the impact of population dynamics » (communication orale), présenté à Life History Research Society Conference, Paris.
    Résumé : Introduction The universal test-and-treat strategy (UTT) was developed to maximize the proportion of all HIV-positive individuals on antiretroviral and virally suppressed, assuming that it leads to reduction in HIV incidence. The evolution over time of the cross-sectional population HIV care cascade is determined by longitudinal individual trajectories through the HIV care continuum and the underlying HIV population dynamics. This structural effect could dilute the impact observed at population level of a UTT strategy RT: either add impact on what (incidence) or delete sentence. The purpose of this paper is to quantify the contribution of each component of population change on the population HIV care cascade in the context of UTT. Sample We used prospective individual-level longitudinal data from the ANRS 12249 cluster-randomized trial which was implemented in rural KwaZulu-Natal, South Africa between 2012 and 2016 to test such an approach. Methods HIV tests results and information on clinic visits, ART prescription, viral load and CD4 count, migration and deaths were used to calculate residency status, HIV status and HIV care status for each individual on a daily basis. Position within the HIV care continuum was considered as a score ranging from 0 (undiagnosed) to 4 (virally suppressed). We compared the cascade score of each individual joining or leaving the HIV population with the average score of their cluster at the time of entry or exit. Then, we computed the contribution of each event on the average cascade score and the annualised total contribution of all events, considering 5 components of HIV population change: aging into the cohort, HIV seroconversions, in-migrations, out-migrations, and permanent exits (including deaths). Results While the average cascade score increased over time in all clusters, that increase was limited due to population dynamics, the total contribution of all population entries and exits being negative. Permanent exits and individuals already infected when reaching the age of 16 had a marginal effect. Although migrants had a lower position than the rest of the population, their overall impact on the cross-sectional population cascade remained limited as in- and out-migration compensated each other. Conclusions In a context of high HIV incidence, the continuous flow of newly infected individuals slows down the efforts to increase ART coverage and population viral suppression.
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