text_1: Continued HHV-8 transmission among MSM in San Francisco may be explained by urogenital contact.
text_2: OBJECTIVES To determine the prevalence of KSHV infection in homosexual men in San Francisco, Calif, at the beginning of the HIV epidemic in 1978 and 1979 and to examine changes in prevalence of KSHV at time points from 1978 through 1996 in light of changes in sexual behavior.