Unprotected vaginal sex with a person who has HIV
Unprotected anal sex with a person who has HIV
Sharing needles, syringes, or other drug-injection equipment with a person who has HIV
Receiving contaminated blood or blood products
From mother to child during pregnancy, childbirth, or breastfeeding
Needlestick injuries from contaminated needles
Sharing sex toys without proper cleaning or protection if infected fluids are present
Exposure of mucous membranes or broken skin to infected blood, semen, vaginal fluids, or rectal fluids