Prevalence and Risk Determinants of Human Immunodeficiency Virus Type 2 (HIV-2) and Human Immunodeficiency Virus Type 1 (HIV-1) in West African Female Prostitutes

Study published in American Journal of Epidemiology, Vol. 136, No. 7: 895-907 (1992). The authors found that "a history of excision and BCG vaccinations decreased the risk of HIV-2 infection." That is, women who had undergone female genital cutting had reduced risk of HIV infection.