Published on November 28, 2013 by

Coital frequency and condom use in monogamous and concurrent sexual relationships in Cape Town, South Africa

The importance of concurrency (overlapping sexual partnerships in which sexual intercourse with one partner occurs between two acts of intercourse with another partner) in driving HIV transmission in hyperendemic settings remains controversial. A modelling study concluded that the role of concurrency in accelerating the spread of HIV is dramatically reduced by coital dilution (the reduction in frequency of sex acts per sexual partner, as a result of acquiring additional partners). We recently examined self-reported data on coital frequency and condom use during monogamous and concurrent relationship episodes from a survey in three communities with a high HIV prevalence. A key question in our analysis was if there is evidence for coital dilution and/or increased condom use during episodes of concurrency.

Short item Published on November 30, 2010

Concurrent sexual partnerships and the HIV epidemic in Africa

The notion that concurrent sexual partnerships (having more than one partner at the same time) are especially common in sub-Saharan Africa and explain the region's high HIV prevalence is accepted by many as conventional wisdom. A systematic review that was recently published was conducted to question this theory. The quantitative and qualitative evidence offered by Read More

Published on November 30, 2010 by


In this last issue of the SACEMA Quarterly in 2010 we present three main articles on a variety of issues: An update on the evidence for the efficacy of microbicides, including the cost-effectiveness of this intervention; The emerging issue of abuse and neglect experienced by AIDS orphans (and other vulnerable children) and their perceived social support; The enormous rise in the prevalence of drug abuse and the increase in the need for treatment. We also have short items providing information on the early work on tsetse by Glyn Vale; An update on the ‘treatment as prevention’ issue; And an item on the issue of the importance of concurrency in the high incidence rate of HIV in Africa. We hope you will all enjoy reading this issue. Next year we will continue publishing the SACEMA Quarterly magazine after giving it a slight makeover.