A heterosexual person infected with HIV will transmit the virus to their partner once in every 900 times the couple has unprotected sex, according to a new study conducted in Africa.
However, the exact number of sexual acts that are needed to t …
Source: http://vitals.msnbc.msn.com/_news/2012/01/12/10139050-study-1-in-900-sex-acts-spreads-hiv
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