Early History of AIDS |
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When AIDS became prevalent in US individuals suffered a complete collapse of the immune system. The second is the molecular diagnosis period, when scientists discovered the Human Immunodeficiency Virus (HIV). It was found that the virus caused impairment of the cell-mediated immunity (CMI). This was due to the loss or destruction of a large number of T-helper cells, which bear the CD4 marker on the surface. The third is the political period which dates to 2000.