The HIV Life Cycle | NIH - HIVinfo
Aug 4, 2021 · HIV attacks and destroys the CD4 cells (CD4 T lymphocyte) of the immune system. CD4 cells are a type of white blood cell that play a major role in protecting the body from infection. HIV uses the machinery of the CD4 cells to multiply and spread throughout the body.
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 complication you get only if you have AIDS , such as a serious infection or cancer.
The Stages of HIV Infection | NIH
Aug 20, 2021 · Without treatment with HIV medicines, HIV infection advances in stages, getting worse over time. The three stages of HIV infection are (1) acute HIV infection, (2) chronic HIV infection, and (3) acquired immunodeficiency syndrome (AIDS).
About HIV | HIV | CDC - Centers for Disease Control and Prevention
Nov 4, 2024 · HIV is a virus that attacks the body's immune system. The only way to know if you have HIV is to get tested. There are many ways to prevent HIV, like using PrEP, PEP, condoms and never sharing needles. HIV treatment helps people live …
HIV and AIDS - World Health Organization (WHO)
Jul 22, 2024 · HIV targets the body’s white blood cells, weakening the immune system. This makes it easier to get sick with diseases like tuberculosis, infections and some cancers. HIV is spread from the body fluids of an infected person, including blood, …
HIV and AIDS - World Health Organization (WHO)
The human immunodeficiency virus (HIV) targets cells of the immune system, called CD4 cells, which help the body respond to infection. Within the CD4 cell, HIV replicates and in turn, damages and destroys the cell.
HIV and AIDS: The Basics | NIH - HIVinfo
Sep 4, 2024 · HIV attacks and destroys the infection-fighting CD4 cells (CD4 T lymphocyte) of the immune system. The loss of CD4 cells makes it difficult for the body to fight off infections, illnesses, and certain cancers. Without treatment, HIV can gradually destroy the immune system, causing health decline and the onset of AIDS.
Human Immunodeficiency Virus (HIV) > Fact Sheets - Yale …
HIV is a virus that’s most often spread through blood and bodily fluids, typically but not exclusively through sexual contact. It attacks and kills a certain type of white blood cell in the body, which weakens the immune system and makes it hard for people to fight off illnesses and infections.
Human Immunodeficiency Virus (HIV) Infection
May 7, 2024 · Human immunodeficiency virus (HIV) infection (infection with either HIV-1 or HIV-2) destroys CD4+ lymphocytes and impairs cell-mediated immunity, increasing risk of certain infections and cancers. Initial infection may cause nonspecific febrile illness.
Human Immunodeficiency Virus (HIV) Infection - MSD Manuals
Human immunodeficiency virus (HIV) infection is a viral infection that progressively destroys certain white blood cells and is treated with antiretroviral medications. If untreated, it can cause acquired immunodeficiency syndrome (AIDS), which …
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