HIV - Wikipedia
HIV-1 is the virus that was initially discovered and termed both lymphadenopathy associated virus (LAV) and human T-lymphotropic virus 3 (HTLV-III). HIV-1 is more virulent and more infective than HIV-2, …
HIV and AIDS - World Health Organization (WHO)
Jul 15, 2025 · There is no cure for HIV infection. However, with access to effective HIV prevention, diagnosis, treatment and care, including for opportunistic infections, HIV infection has become a …
HIV/AIDS - Symptoms and causes - Mayo Clinic
Feb 9, 2024 · It's caused by the human immunodeficiency virus, also called HIV. HIV damages the immune system so that the body is less able to fight infection and disease. If HIV isn't treated, it can …
About HIV | HIV | CDC
Jan 14, 2025 · HIV (human immunodeficiency virus) is a virus that attacks the body's immune system. Without treatment, it can lead to AIDS (acquired immunodeficiency syndrome). There is currently no …
HIV and AIDS: The Basics | NIH - HIVinfo
May 28, 2025 · Get basic information about HIV, including how it affects the body, how to know if you have HIV, and how to prevent or treat HIV.
HIV & AIDS: Causes, Symptoms, Treatment & Prevention
Human immunodeficiency virus (HIV) is the virus that causes acquired immune deficiency syndrome (AIDS). HIV weakens your immune system by destroying your T-cells until you are unable to fight off …
HIV/AIDS: Facts, Statistics, Symptoms, Causes, Diagnosis, and Treatments
Oct 6, 2025 · HIV is spread throughout the world, but sub-Saharan Africa (the southern part) has the greatest number of people who are infected. The World Health Organization and the United Nations …
What Are HIV and AIDS? - HIV.gov
Nov 12, 2025 · 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.
Understanding HIV: What You Need to Know - aids.org
HIV stands for Human Immunodeficiency Virus. It attacks the immune system, specifically the CD4 cells (T cells), which help the body fight off infections. If left untreated, HIV can lead to AIDS (Acquired …
HIV | HIV Symptoms | AIDS | MedlinePlus
Mar 26, 2025 · HIV (human immunodeficiency virus) attacks the body’s immune system. There is no cure but it can be treated with medicines. To know if you have HIV, get tested.