If a woman is sexually active, vaginal dysbiosis makes her more at risk of contracting sexually transmitted infections (STIs). Women with lower levels of Lactobacillus are more at risk of HIV https://www.bbc.com/future/article/20251125-how-bacteria-in-the-vagina-can-improve-health "In Cape Town in South Africa, the rate of HIV is between 20-30%, and yet some sex workers seem to get lucky and avoid infection"