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What specific white blood cells part does HIV destroy?

What specific white blood cells part does HIV destroy?

HIV finds the white blood cells, called CD4 cells. HIV gets inside the CD4 cell and makes copies of itself. Then, HIV kills the CD4 cell and the new HIV copies find other CD4 cells to get inside and start the cycle again. HIV kills immune system cells that help the body fight infections and diseases.

Does HIV-2 produce p24?

Antibodies against HIV-1 and HIV-2 are usually not detectable until 6 to 12 weeks following exposure and are almost always detectable by 12 months. They may fall to undetectable levels (ie, seroreversion) in the terminal stage of AIDS when the patient’s immune system is severely depressed.

What is HIV-1 positive and HIV-2 negative?

Positive HIV-1 antibody, but negative HIV-2 antibody results, indicates the presence of HIV-1 infection. Together with reactive initial combined HIV-1/-2 antigen and antibody test results, individuals with such results are presumed to have HIV-1 infection.

Is the EIA AB test positive for HIV?

The EIA Ab Screen is only a screening test and will react (be abnormal) in many cases when there is no disease. If this screen is abnormal, the confirmatory tests are done, which are more specific. The Western Blot for HIV 1 is negative. They then test for HIV type 2. That test is also negative.

Can a reactive ELISA be a negative HIV test?

A reactive ELISA plus a negative Western Blot is considered to be a “negative HIV test.” There are many potential causes for a falsely reactive ELISA test, including cross-reacting non-specific antibodies produced as a consequence of pregnancy.

What’s the difference between a positive and negative HIV test?

First, the ELISA (or EIA or rapid test) is done. If positive, a confirmatory test, such as the Western Blot, must be done and come back positive before a person can be told he or she has tested HIV positive! A positive screening ELISA test and negative confirmatory Western Blot test is considered to be a negative HIV test!

What is the next test for HIV 1 / 2?

The more specific test called 4th Generation HIV-1/HIV-2 antibody differentiation immunoassay will be the next test performed in case of a “reactive” (not positive) result from the screen test. That test has a 97.99% accuracy at 28 days of a possible exposure.