Skip to content
My WebMD Sign In, Sign Up

HIV & AIDS Health Center

Font Size
A
A
A

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 medications, 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 more difficult for the immune system to fight infections.

Recommended Related to HIV/AIDS

HIV/AIDS Risk Factors

A variety of HIV risk factors can increase your chances of becoming infected with a virus called HIV (human immunodeficiency virus). This infection can lead to AIDS (acquired immunodeficiency syndrome), which makes it more difficult for your body to fight off infection and disease. Some risk factors increase your HIV risk more than others. You can't entirely eliminate risk, but you can do many things to lower your risk and protect yourself.

Read the HIV/AIDS Risk Factors 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 08, 2010
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.
Next Article:

Today in HIV & AIDS

HIV Myth Facts
Slideshow
STD Overview
Feature
 
Hepatitis Prevent 10
Feature
AIDS retrospective slideshow
Slideshow
 

HIV AIDS Screening
Slideshow
Staying Healthy
Slideshow
 
HIV AIDS Treatment
Feature
Discrimination Stigma
Feature
 

Treatment Side Effects
Feature
HIV AIDS Cure FAQ
Feature
 
Fast HIV Screening
Video
HIV Test Early Detection
Video
 

WebMD Special Sections