Answer:
HIV (human immunodeficiency virus) is a virus that attacks cells that help the body fight infection, making a person more vulnerable to other infections and diseases. It is spread by contact with certain bodily fluids of a person with HIV, most commonly during unprotected sex.
If left untreated, HIV can lead to the disease AIDS (acquired immunodeficiency syndrome).
AIDS is the late stage of HIV infection that occurs when the body’s immune system is badly damaged because of the virus.