A genetic variation which evolved to protect people of African descent against malaria has now been shown to increase their susceptibility to HIV infection by up to 40 per cent, according to new research. Conversely, the same variation also appears to prolong survival of those infected with HIV by approximately two years. The discovery marks the first genetic risk factor for HIV found only in people of African descent, and sheds light on the differences in a crucial genetic makeup. (source: sciencedaily.com)
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