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by TZubiri
6 hours ago
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My bet is that it has to do with the mechanics of receptive vaginal and oral sex, the penis just reaches deeper and causes more lesions. Compared to insertive vaginal sex and oral vaginal performance, those lesions would be less frequent and on more distal parts of the body. If the rate is 50%, I'd also expect MSM to be overrepresented there, which would make the difference of risk between heterosexual sex even more imbalanced. |
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