HIV is believed to have arisen by mutation of a virus endemic to wild animals in Africa.

Name: HIV is believed to have arisen by mutation of a virus endemic to wild animals in Africa.
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This is the currently accepted theory for the origin of HIV. It is believed that the virus mutated from a simian immunodeficiency virus (SIV) in chimpanzees or other primates, and then jumped to humans through contact with infected blood or body fluids during hunting or butchering of these animals for meat.

HIV Is Believed to Have Arisen by Mutation of a Virus