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HIV-1's high virulence might be an accident of evolution

se can be good in the short term, but if sustained for a long time as in those with HIV, it can exhaust the immune system," he said. "If you could somehow dampen the response, it might effectively convert the condition to the more chronic, asymptomatic infection seen in monkeys."

Further studies by the team will examine whether SIVs carrying Nef genes artificially made incapable of limiting T cell activation might become more pathogenic in their natural monkey hosts. The group will also examine whether Nef variation among HIV-2 strains might explain differences in the rate of progression to disease in infected humans.


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Source:Cell Press


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