Publications by authors named "Samson Chidiya"
Estimating the Population Size of Female Sex Workers in Zimbabwe: Comparison of Estimates Obtained Using Different Methods in Twenty Sites and Development of a National-Level Estimate.
J Acquir Immune Defic Syndr
September 2020
Background: National-level population size estimates (PSEs) for hidden populations are required for HIV programming and modelling. Various estimation methods are available at the site-level, but it remains unclear which are optimal and how best to obtain national-level estimates.
Setting: Zimbabwe.
Background: HIV epidemiology and intervention uptake among female sex workers (FSW) in sub-Saharan Africa remain poorly understood. Data from outreach programs are a neglected resource.
Methods: Analysis of data from FSW consultations with Zimbabwe's National Sex Work program, 2009-2014.
Population-level impact of Zimbabwe's National Behavioural Change Programme.
J Acquir Immune Defic Syndr
December 2014
Objective: To assess the impact of Zimbabwe's National Behavioural Change Programme (NBCP) on biological and behavioral outcomes.
Methods: Representative household biobehavioral surveys of 18- to 44-year-olds were conducted in randomly selected enumeration areas in 2007 and 2011 to 2012. We examined program impact on HIV prevalence among young women, nonregular partnerships, condom use with nonregular partners, and HIV testing, distinguishing between highly exposed and low-exposed communities and individuals.
Objectives: To determine the HIV prevalence and extent of engagement with HIV prevention and care among a representative sample of Zimbabwean sex workers working in Victoria Falls, Hwange and Mutare.
Design: Respondent driven sampling (RDS) surveys conducted at each site.
Methods: Sex workers were recruited using respondent driven sampling with each respondent limited to recruiting 2 peers.
Background: Although disproportionately affected by HIV, sex workers (SWs) remain neglected by efforts to expand access to antiretroviral treatment (ART). In Zimbabwe, despite the existence of well-attended services targeted to female SWs, fewer than half of women diagnosed with HIV took up referrals for assessment and ART initiation; just 14% attended more than one appointment. We conducted a qualitative study to explore the reasons for non-attendance and the high rate of attrition.
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- HIV prevention among young people in southern Africa is a key public health focus, and this study evaluates a community-based intervention in rural Zimbabwe aimed at changing social norms related to HIV and reproductive health.
- After implementing the intervention over four years, the study surveyed 4,684 young individuals (ages 18-22), revealing some improvements in knowledge and attitudes but no significant changes in sexual behavior or HIV/HSV-2 prevalence.
- The findings suggest that while the intervention had some positive effects on knowledge and reported pregnancy rates among women, it did not impact actual HIV rates, highlighting the need for more comprehensive prevention strategies beyond just behavioral changes.
Objective: To assess the effectiveness of a community-based HIV prevention intervention for adolescents in terms of its impact on (1) HIV and Herpes simplex virus type 2 (HSV-2) incidence and on rates of unintended pregnancy and (2) reported sexual behaviour, knowledge and attitudes.
Methods: Cluster randomised trial of a multi-component HIV prevention intervention for adolescents based in rural Zimbabwe. Thirty communities were selected and randomised in 2003 to early or deferred intervention implementation.