Women who have sex with women frequency of HIV transmission, although transmission is possible through vaginal and cervical secretions; the highest rate of transmission of HIV to women is among those who have sexual intercourse with men or participate in intravenous drug use. Women who have sex with women Women who have sex with women (WSW) are women who engage in sexual activities with other women, whether or not they identify themselves as lesbian, bisexual, pansexual, heterosexual, or dispense with sexual identification altogether. The term "WSW" is often used in medical literature to describe such women as a group for clinical study, without needing to consider
Men who have sex with men individuals who have compromised immune systems, especially HIV. Unprotected anal sex is a risk factor for formation of antisperm antibodies (ASA) in the recipient. In some people, ASA may cause autoimmune infertility. Many countries impose restrictions on donating blood for men who have or have had sex with men, as well as their female sexual partners—see the maps. Most national standards require direct questioning regarding a donor's sexual history, but the length of deferral varies. Men who have sex with men Men who have sex with men (MSM), also known as males who have sex with males, are male persons