BIO SCI 45 Lecture 10: 10 AIDS Epidemiology Part 2
7 Oct 2016
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Conclusions about relative risks of different activities for hiv transmissions: 1. Implicates unprotected anal sex as a risk in hiv transmission: 2. Casual contact does not cause hiv transmission: 3. Hiv transmission by blood feeding insects is unlikely. San francisco men"s health study: cohort of 1,034 single men, monitored for hiv antibody status, asked about their secual practices. Divided according to sexual practice: homosexual men in study, studies unprotected anal intercourse. Higher frequency of infection associated with receptive anal sex. Unprotected anal intercourse is a high-risk mode of hiv infection. San francisco men"s health study: study could not statistically distinguish men who practiced only insertive anal intercourse from men who did not engage in anal sex at all. Still a risk for insertive anal intercourse: studies of heterosexual couples who engage in anal intercourse, insertive intercourse can result in hiv transmission to the man.
