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  1. What Are HIV and AIDS? - HIV.gov

    Nov 12, 2025 · AIDS is the late stage of HIV infection that occurs when the body’s immune system is badly damaged because of the virus. In the U.S., most people with HIV do not …

  2. HIV/AIDS - Wikipedia

    HIV/AIDS research includes all medical research which attempts to prevent, treat, or cure HIV/AIDS, along with fundamental research about the nature of HIV as an infectious agent, …

  3. AIDS | Definition, Diagnosis, Treatment, & Facts | Britannica

    Nov 18, 2025 · AIDS is an infectious disease caused by human immunodeficiency virus (HIV). HIV slowly attacks and destroys the immune system, leaving an individual vulnerable to a …

  4. HIV & AIDS: Causes, Symptoms, Treatment & Prevention

    Human immunodeficiency virus (HIV) is the virus that causes AIDS. HIV slowly weakens your immune system until you are unable to fight off even minor illnesses.

  5. HIV/AIDS - Symptoms and causes - Mayo Clinic

    Feb 9, 2024 · You can have an HIV infection with few or no symptoms for years before it turns into AIDS. AIDS is diagnosed when the CD4 T cell count falls below 200 or you have a …

  6. 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 …

  7. HIV and AIDS: Symptoms, Causes, Treatments, and More - Healthline

    Oct 2, 2025 · HIV damages the immune system. Without treatment, AIDS can develop. Learn all about HIV and AIDS, including symptoms, treatments, and life expectancy.

  8. HIV/AIDS: Facts, Statistics, Symptoms, Causes, Diagnosis, and ... - WebMD

    Oct 6, 2025 · Discover how HIV spreads, how to prevent the virus progressing to AIDS, and where to get treatment.

  9. HIV and AIDS - World Health Organization (WHO)

    Jul 15, 2025 · Acquired immunodeficiency syndrome (AIDS) occurs at the most advanced stage of infection. HIV targets the body’s white blood cells, weakening the immune system. This …

  10. HIV and AIDS: The Basics | NIH - HIVinfo

    May 28, 2025 · HIV stands for human immunodeficiency virus, which is the virus that causes HIV infection. The acronym “HIV” can refer to the virus or to HIV infection. AIDS stands for …