[CobaltBlue]

For one thing, the people with the resistance aren't the ones who've been living there in the last 100,000 years. "There"? I don't think they've figured out where HIV has been during the past 100,000 years. Given the ease with which it recombines, not sure they ever will.

[VadeRetro]

Do you have HIV and Ebola confused? They don't know where Ebola hangs out when it's not in humans. By comparison, it's pretty certain HIV is a mutation of a simian virus that jumped to humans in fairly recent times. The ancestral form is still around in monkeys and apes.