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CD4+ Cells - Topic Overview

CD4+ cells are part of the immune system and are a type of white blood cell. White blood cells protect the body against infection. CD4+ cells are also called T-lymphocytes, T-cells, or T-helper cells.

HIV invades and destroys CD4+ cells. But the body continues to produce new CD4+ cells to fight the HIV infection. If the infection is not treated with medicines, the body gradually loses the ability to produce enough CD4+ cells to replace the number that are being destroyed by HIV. As the number of CD4+ cells in the blood drops, it becomes harder for the immune system to fight infections.

Recommended Related to HIV/AIDS

HIV and AIDS in African-Americans

In many ways, African-Americans are bearing the brunt of the HIV crisis in the United States. HIV is the virus that causes AIDS (acquired immunodeficiency syndrome). African-Americans receive more AIDS diagnoses and experience more HIV-related deaths than any other racial or ethnic group in the United States. Here is a brief overview of the impact, possible causes, and potential ways to reduce the risk of HIV and AIDS in blacks.

Read the HIV and AIDS in African-Americans article > >

CD4+ counts are measured every 3 to 4 months in people who are infected with HIV. The CD4+ count is an important measurement of how HIV is affecting your immune system and can help you decide when to begin treatment for HIV or when you need to try a different combination of medicines.

    WebMD Medical Reference from Healthwise

    Last Updated: April 05, 2012
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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