amfAR, The Foundation for AIDS Research


more than

700 million


Now is the time for a cure



What is HIV?

HIV stands for human immunodeficiency virus. It is the virus that causes AIDS. A member of a group of viruses called retroviruses, HIV infects human cells and uses the energy and nutrients provided by those cells to grow and reproduce.

What is AIDS?

AIDS stands for acquired immunodeficiency syndrome. It is a disease in which the body's immune system breaks down and is unable to fight off infections, known as "opportunistic infections," and other illnesses that take advantage of a weakened immune system.

Can I transmit HIV if I’m on treatment and virally suppressed?

Antiretroviral therapy, when taken as prescribed to achieve lasting viral suppression, completely removes any risk of transmitting HIV to an uninfected partner.