Short item Published on March 15, 2017

The devil in the details: A comparison of demographics and behaviours of female sex workers in Johannesburg and Pretoria

This study clearly shows the diversity of sex workers (SWs) and their varying HIV treatment needs in the workplace and at home. Standard treatment guidelines could therefore fall short of their intention to reduce vulnerability to poor health outcomes if a non-differentiated approach to care is followed. Trained staff who are sensitised to the local medical, emotional and legal needs of SWs are able to create user friendly services that encourage these vulnerable women to utilise services.

Short item Published on March 15, 2017

Age-disparate relationships and HIV transmission: not as simple as it may seem

Interventions to curb age-disparate relationships (ADR) are ongoing in spite of conflicting evidence that ADR are a risk factor for HIV transmission. There is a real need to explore the prevalence of ADR and understand what they mean for HIV transmission. We must first understand and describe these relationships; second, establish a causal relationship with HIV. We recently published a paper that explores those objectives in a population of 1,922 adult men and women living in Likoma Island, Malawi.

Short item Published on March 15, 2017

Beyond risk compensation: Clusters of antiretroviral treatment users in sexual networks can modify the impact of ART on HIV incidence

Early initiation of antiretroviral therapy (ART) significantly improves the survival of people living with HIV (PLWH) and reduces HIV transmission to uninfected partners. Mathematical models suggest that treatment-as-prevention programmes could lead to HIV elimination. How the clinical efficacy of ART in preventing HIV transmission translates to real-life settings depends in large part on the capacity of HIV programmes to engage and retain PLWH. The effects of ART on HIV incidence may also depend on changes in sexual network dynamics during the course of ART scale-up which are discussed in this article.

Published on December 9, 2016 by

Editorial: HIV, TB and malaria: Is the end in sight?

The history of sub-Saharan Africa has been defined and determined to a large extent by the struggle against tropical diseases, many of them vector borne, including malaria, leishmaniasis, trypanosomiasis and many others. To add to this burden our continent has now to deal with the ravages of HIV and the consequent rise in tuberculosis. In this issue of the SACEMA Quarterly we discuss some of the key problems and ways in which we might be able to address and mitigate some of the challenges that we face in this regard.

Published on December 9, 2016 by

The value of the community health worker in the South African health care system

This article reports on the role of the community health worker (CHW) and the Primary Health Care Re-engineering Model. CHWs are well placed to strengthen service delivery, build links for different government departments in the community, and be linkages for patients to access health care as well as other support systems. The CHW provides on-the-ground support to the patient/community member and links them to health and social service departments. The passion of the CHWs to help their community is valuable and should be supported and nurtured. The CHW is a valuable resource for the development and maintenance of the South African public health system. For linkage to care in health service delivery to be effective and sustainable, the support, guidance, and development of this cadre of worker is essential.

Published on December 9, 2016 by

Using a well-characterized HIV-1 subtype C incidence cohort to compare the performance of two biomarker assays for recent HIV infection

The use of laboratory assays to identify recent infections among samples collected in cross-sectional surveys provides a potentially powerful way to measure HIV incidence. Ongoing evaluations of candidate laboratory assays have highlighted improvements and shortcomings of individual assays in correctly identifying and classifying people as recently infected. We tested two candidate assays, Sedia Limiting Antigen (LAg) and BioRad avidity assays (BioRad) against samples from a prospective cohort study in which incidence was measured directly. BioRad and LAg avidity assays have false recent rates that are up to 8 times lower than those for the BED assay, providing the potential for improved estimates of HIV incidence.

Published on December 9, 2016 by

Monitoring progress towards ending AIDS in South Africa

This article is based on the presentation given by John Hargrove at the NRF Science for Society Lecture entitled Ending HIV/AIDS in South Africa held on 1 December 2016 in Stellenbosch. He argues that the proactive use of ART (Treatment as Prevention or TasP) provides a powerful weapon for combatting the HIV epidemic, and that we also have the tools for monitoring and evaluating the progress of that programme. Mathematical modelling has played an important role, both in suggesting appropriate interventions, and in developing new monitoring methods, but we are still in for a long journey.

Short item Published on December 9, 2016

Sexual debut – An analysis of the Birth to Twenty data

Despite the importance of youth sexual behaviour for sexual and reproductive health and the severity of the HIV/AIDS there is relatively little empirical research on factors affecting the age at sexual debut in South Africa. In my dissertation I used survival analysis techniques to identify significant predictors of early sexual debut in a South African context. The results may assist in devising strategies and action plans to be used to educate adolescents in making informed and safe decisions regarding sexual debut.

Short item Published on December 9, 2016

Key traveller groups of relevance to spatial malaria transmission

We conducted surveys of travellers and their movement patterns in Mali, Burkina Faso, Zambia and Tanzania. We found that women travelling with children are a consistent group of relevance to malaria transmission. Our study also highlighted youth workers as a key traveller group of relevance to parasite dispersal in Mali.

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