Abstract

In all regions of sub-Saharan Africa the predominant mode of transmission of HIV is through heterosexual intercourse however there are large variations in the rate and extent of the spread of HIV in different populations. This study was conducted to identify the factors that influence the rapid spread of HIV in four African cities namely Cotonou (Benin) Yaounde (Cameroon) Kisumu (Kenya) and Ndola (Zambia). Results demonstrated that high rates of partner change and being married are risk factors for HIV infection in men in at least one city but are risk factors for women in all four cities. In addition condom use among sex workers did not show a difference between the low and high prevalence cities. Furthermore no evidence of changes towards safer sexual behavior was identified in the high HIV prevalence cities. The only factors that were more common in the two high HIV prevalence cities than in the two low HIV prevalence cities were young age at first intercourse for women young age at first marriage and large age difference between the spouses. It was also noted that the high levels of HIV infection among young people especially among female adolescents in Kisumu and Ndola highlight the importance of interventions targeted at young people and their partners.

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