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Factors associated with antiretroviral treatment initiation amongst HIV-positive individuals linked to care within a universal test and treat programme : early findings of the ANRS 12249 TasP trial in rural South Africa

mercredi 17 août 2016
Mis à jour le mercredi 17 août 2016

Article published in an AIDS Care special issue : « Test and Treat » trials in Africa

Authors

Sylvie Boyer, Collins Iwuji, Andréa Gosset, Camelia Protopopescu, Nonhlanhla Okesola, Mélanie Plazy, Bruno Spire, Joanna Orne-Gliemann, Nuala McGrath, Deenan Pillay, François Dabis & Joseph Larmarange on behalf of the ANRS 12249 TasP study group

Abstract

Prompt uptake of antiretroviral treatment (ART) is essential to ensure the success of universal test and treat (UTT) strategies to prevent HIV transmission in high-prevalence settings. We describe ART initiation rates and associated factors within an ongoing UTT cluster-randomized trial in rural South Africa. HIV-positive individuals were offered immediate ART in the intervention arm vs. national guidelines recommended initiation (CD4≤350 cells/mm3) in the control arm. We used data collected up to July 2015 among the ART-eligible individuals linked to TasP clinics before January 2015. ART initiation rates at one (M1), three (M3) and six months (M6) from baseline visit were described by cluster and CD4 count strata (cells/mm3) and other eligibility criteria : ≤100 ; 100–200 ; 200–350 ; CD4>350 with WHO stage 3/4 or pregnancy ; CD4>350 without WHO stage 3/4 or pregnancy. A Cox model accounting for covariate effect changes over time was used to assess factors associated with ART initiation. The 514 participants had a median [interquartile range] follow-up duration of 1.08 [0.69 ; 2.07] months until ART initiation or last visit. ART initiation rates at M1 varied substantially (36.9% in the group CD4>350 without WHO stage 3/4 or pregnancy, and 55.2–71.8% in the three groups with CD4≤350) but less at M6 (from 85.3% in the first group to 96.1–98.3% in the three other groups). Factors associated with lower ART initiation at M1 were a higher CD4 count and attending clinics with both high patient load and higher cluster HIV prevalence. After M1, having a regular partner was the only factor associated with higher likelihood of ART initiation. These findings suggest good ART uptake within a UTT setting, even among individuals with high CD4 count. However, inadequate staffing and healthcare professional practices could result in prioritizing ART initiation in patients with the lowest CD4 counts.

Reference

Boyer Sylvie, Iwuji Collins, Gosset Andréa, Protopopescu Camelia, Okesola Nonhlanhla, Plazy Mélanie, Spire Bruno, Orne-Gliemann Joanna, McGrath Nuala, Pillay Deenan, Dabis François, Larmarange Joseph et group on behalf of the ANRS 12249 TasP study (2016) « Factors associated with antiretroviral treatment initiation amongst HIV-positive inspaniduals linked to care within a universal test and treat programme: early findings of the ANRS 12249 TasP trial in rural South Africa », AIDS Care, 28 (sup3) (juin 02), p. 39-51. DOI : 10.1080/09540121.2016.1164808. http://dx.doi.org/10.1080/09540121.2016.1164808.

Voir en ligne : Open access online

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