Refers to Human Immunodeficiency Virus, a retrovirus that affects the immune system. If left untreated, HIV eventually causes acquired immunodeficiency syndrome (AIDS), which compromises the immune system. AIDS is typically fatal.

HIV is a sexually transmitted infection (STI) that can spread through blood-to-blood contact. According to the Joint United Nations Programme on HIV-AIDS, about 1.2 million people in the United States are HIV positive. Sexually active persons can dramatically decrease their chances of contracting HIV by using condoms properly when having any type of penetrative sex.

Sexual lubricants do not affect the chances of contracting HIV/AIDS, although products with nonoxynol-9, a spermicide, may raise chances of transmission.