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  1. 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 …

  2. HIV - Wikipedia

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

  3. 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.

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

    HIV & AIDS Human immunodeficiency virus (HIV) is the virus that causes acquired immune deficiency syndrome (AIDS). HIV weakens your immune system by destroying your T-cells …

  5. 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.

  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/AIDS: Differences, Symptoms, Stages, and Treatment

    Jan 6, 2026 · Untreated, HIV is a virus that advances to AIDS. HIV is spread through blood, needles, and other ways. Learn how to find out if you’re HIV/AIDS positive.

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

    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 …

  9. 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 …

  10. 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 …