Women who have sex with women contact with cervical secretions, vaginal mucosa, or menstrual blood, including fingers or penetrative objects may transmit sexually transmitted diseases. Oral-genital contact may indicate a higher risk of acquiring HSV, even among women who have had no prior sex with men. Bacterial vaginosis occurs more often in lesbians, but it is unclear if BV is transmitted by sexual contact; it occurs in celibate as well as sexually active women. BV often occurs in both partners in a lesbian relationship; a recent study of women with BV found that 81% had partners with BV. Lesbians are not included in a category of
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