The role of heterosexual anal intercourse for HIV transmission in developing countries: are we ready to draw conclusions?

A recent meta-analysis suggested per-act HIV transmission probabilities of 1.7% (95% CI 0.3-8.9) for receptive AI and 0.08% (95% CI 0.06 to 0.11) for male-to-female VI from studies in developed countries, which roughly translates to a 20-fold increase in HIV risk per receptive AI act compared with r...

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