- Through vaginal or anal sex. Anal sex is riskier than vaginal sex.
- By sharing needles or syringes, such as when using drugs
- From a mother to her baby during pregnancy, childbirth, or breastfeeding
- Through oral sex, but getting HIV from oral sex is very rare. You can get HIV from giving oral sex if infected sexual fluids get into your mouth and you have bleeding gums or mouth sores, or from receiving oral sex if your partner has bleeding gums or a mouth sore.
Source: https://www.womenshealth.gov/ Page last updated: March 02, 2018.