A serosurvey was conducted in a random sample of 259 women and 231 men in 1
2 rural communities in Mwanza Region, Tanzania, using a type-specific ELISA
for Herpes simpler virus type 2 (HSV-2) infection. Seroprevalence rose ste
eply with age to similar to 75% in women greater than or equal to 25 years
old and 60% in men greater than or equal to 30. After adjusting for age and
residence, HSV-2 prevalence was higher in women who were married, in a pol
ygamous marriage, Treponema pallidum hemagglutination assay (TPHA)-positive
, had more lifetime sex partners, or who had not traveled. Prevalence was h
igher in men who were married, had lived elsewhere, had more lifetime partn
ers, had used condoms, or were TPHA-positive, HSV-2 infection was significa
ntly associated with recent history of genital ulcer. The association betwe
en HSV-2 infection and lifetime sex partners was strongest in those <25 yea
rs old in both sexes. This association supports the use of HSV-2 serology a
s a marker of risk behavior in this population, particularly among young pe
ople.