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Question
Posted by: MR T | 2011/01/14

Confused

Where exactly does HIV/AIDS originate, n how and when did it come to Africa

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Our expert says:
Expert ImageEnviroHealth expert

No one knows for sure. Scientists think that HIV probably originated early 20th century, when simian immunodeficiency virus (SIV), which causes an immune disease similar to HIV in apes, crossed the species barrier to humans, perhaps as a result of bushmeat hunting (i.e. of apes) in Africa, and evolved to become HIV.

The world's current epidemic probably started in the mid to late 1970s.

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Our users say:
Posted by: EnviroHealth Expert | 2011/01/17

No one knows for sure. Scientists think that HIV probably originated early 20th century, when simian immunodeficiency virus (SIV), which causes an immune disease similar to HIV in apes, crossed the species barrier to humans, perhaps as a result of bushmeat hunting (i.e. of apes) in Africa, and evolved to become HIV.

The world's current epidemic probably started in the mid to late 1970s.

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