Why is the aids virus more common among gay man and african?

It is sexually trans. As a sexually transmitted disease, aids is more common in groups and cultures that are less monogamous.
HIV transmission. Is much more likely with anal intercourse. Certain other sexually transmitted diseases can facilitate the transmission of HIV as can lack of malecircumcision. The role of concurrent partners is debatable.

Related Questions

How come the aids virus is more common among gay man and african american?

Demographics. The virus that causes aids is hiv. New cases of HIV in the usa are most common among men who have sex with men, and heterosexual females. The reasons why are complex and not related to a single answer. Read more...