Those who are most at risk are:
- people who have "unprotected sex" with someone who has HIV.
- people who share needles, syringes or other equipment to inject drugs or medicine with someone who has HIV.
- babies can potentially become infected during their mother's pregnancy, during delivery or after birth in the immediate post-partum period. they can also become infected through breastfeeding.
- health care and maintenance providers who may be exposed to blood and body fluids.