Background In sub-Saharan Africa, the prevalence of HIV among married and cohabiting
couples is substantial. Information about the underlying social drivers of HIV transmission in …

This study examined the prevalence of unprotected sex, other sexual risk behaviours, and
factors associated with unprotected sex among men and women recently diagnosed with …

Patterns of age differences between sexual partners–“age-mixing”–may partially explain the
magnitude of HIV epidemics in Sub-Saharan Africa. However, evidence of age-disparity as a …

Background: Several studies support the need for effective interventions to reduce HIV
transmission risk behaviors among people living with HIV/AIDS (PLWHAs). Design: Cross …

Objective: Age-disparate sexual relationships with older men may drive high rates of HIV
acquisition in young women in sub-Saharan Africa, but evidence is limited. We investigate …

Background Evidence suggests that HIV prevalence amongst young Zambians has declined
recently, especially in higher-education groups. We studied trends in key sexual behaviour …

Background: Enhanced HIV surveillance using demographic, behavioral, and biologic data
from national surveys can provide information to evaluate and respond to HIV epidemics …

Objective: Little is known about variations in patterns of sexual behaviour in different
countries, cultures, and subpopulations that determine the spread of HIV-1. Quantitative …

South Africa has experienced declining marriage rates and the increasing practice of
cohabitation without marriage. This study aims to improve the understanding of the …

Determinants of multiple sexual partners and condom use among adults were assessed
through a population-based survey in one urban, one semi-urban and one rural community …