HIV, or human immunodeficiency virus, is a virus that attacks the bodys immune system, specifically the white blood cells called CD4 cells. If left untreated, HIV can lead to AIDS (acquired immunodeficiency syndrome) . HIV is primarily spread through contact with certain bodily fluids of a person with HIV, most commonly during unprotected sex or through sharing injection drug equipment. The virus weakens the bodys ability to fight infection and disease, and without medication, it may take years before HIV weakens the immune system to the point of developing AIDS. However, with proper medical care and antiretroviral treatment, HIV can be controlled, and people with HIV who receive effective treatment can live long, healthy lives and protect their partners. It is important to note that there is currently no effective cure for HIV, and once people get HIV, they have it for life.