A study seems to indicate that a cancerous skin lesion closely related to the AIDS/HIV virus, can be transmitted through unprotected oral sex.
In fact, oral sex may be a key way of spreading the Kaposi's sarcoma-associated herpesvirus (KSHV), especially since gay men often use condoms during anal sex, but indulge in unprotected oral sex.
Kaposi's sarcoma has been much more common since the AIDS epidemic, because it is more likely to develop in people with KSHV who also have AIDS than in healthy people.
