one of my friends has a book that is all about how HIV came from monkeys, but there was other arguments saying that it came from holland after mutating.
i also saw a comedian once who had this sort of thing in their set:
"you know what, i dont think we should bother trying to cure Aids, soon as its all cured, some weirdos gonna go and f*ck another monkey and now we've got something else to deal with."