Levels and spread of HIV seroprevalence and associated factors: evidence from national household surveys.

This report summarizes HIV prevalence and the associations between HIV serostatus and key characteristics and behaviors of adult women and men in 22 developing countries primarily in sub-Saharan Africa. Among other factors the report examines youth who were under age 18 at their first sexual encounter and found they had higher rates of HIV prevalence than other youth age 15-24. With the exception of Lesotho HIV prevalence is low among youth who have never had sex (primary abstinence) and also among youth who did not have sex in the 12 months preceding the survey (secondary abstinence).