How homosexual sex can lead to having HIV/AIDS ?
In: Biology
HIV is transmitted when virus from infected person enters bloodstream of another person. Bodily fluids, including vaginal fluid and semen, can contain HIV. Also, tiny fissures can be created during vaginal or anal sex. These fissures will allow HIV to go from semen/vaginal fluid to blood. So, man-to-man anal sex is one of multiple ways genitalia-mediated HIV spread can occur.
Of course, the most efficient way to transmit HIV is through blood. So, a needle from infected person being used by a non-infected person is likely to cause transmission. Which is why needle exchange programs are a great way to reduce spread of HIV through society.
This is also why donated blood is thoroughly checked for HIV.
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