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Study Results from H. Wand and Colleagues Update Understanding of HIV/AIDS


2014 JAN 6 (NewsRx) -- By a News Reporter-Staff News Editor at AIDS Weekly -- Fresh data on Immune System Diseases and Conditions are presented in a new report. According to news reporting out of Durban, South Africa, by NewsRx editors, research stated, "To describe and quantify the differences in risk behaviours, HIV prevalence and incidence rates by birth cohorts among a group of women in Durban, South Africa. Cross-sectional and prospective cohort analyses were conducted for women who consented to be screened and enrolled in an HIV prevention trial."

Our news journalists obtained a quote from the research, "Demographic and sexual behaviours were described by five-year birth cohorts. Semiparametric regression models were used to investigate the bivariate associations between these factors and the birth cohorts. HIV seroconversion rates were also estimated by birth cohorts. The prevalence of HIV-1 infection at the screening visit was lowest (20.0%) among the oldest (born before 1960) cohorts, while the highest prevalence was observed among those born between 1975 and 79. Level of education increased across the birth cohorts while the median age at first sexual experience declined among those born after 1975 compared to those born before 1975. Only 33.03% of the oldest group reported ever using a condom while engaging in vaginal sex compared to 73.68% in the youngest group; however, HIV and other sexually transmitted infection (STI) incidence rates were significantly higher among younger women compared to older women. These findings clearly suggest that demographic and sexual risk behaviours are differentially related to the birth cohorts. Significantly high HIV and STI incidence rates were observed among the younger group. Although the level of education increased, early age at sexual debut was more common among the younger group."

According to the news editors, the research concluded: "The continuing increase in HIV and STI incidence rates among the later cohorts suggests that the future trajectory of the epidemic will be dependent on the infection patterns in younger birth cohorts."

For more information on this research see: Evaluating HIV prevention efforts using semiparametric regression models: results from a large cohort of women participating in an HIV prevention trial from KwaZulu-Natal, South Africa. Journal of the International AIDS Society, 2013;16():1-7. Journal of the International AIDS Society can be contacted at: Int Aids Society, Avenue De France 23, Geneva, 1202, Switzerland. (BioMed Central -; Journal of the International AIDS Society -

Our news journalists report that additional information may be obtained by contacting H. Wand, MRC, HIV Prevent Res Unit, ZA-3630 Durban, South Africa (see also Immune System Diseases and Conditions).

Keywords for this news article include: Durban, HIV/AIDS, RNA Viruses, South Africa, Retroviridae, HIV Infections, Vertebrate Viruses, Primate Lentiviruses, Viral Sexually Transmitted Diseases, Immune System Diseases and Conditions

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Information in this article was accurate in January 6, 2014. The state of the art may have changed since the publication date. This material is designed to support, not replace, the relationship that exists between you and your doctor. Always discuss treatment options with a doctor who specializes in treating HIV.