@raphjd:
Other animals have a version of HIV, so it's not a surprise we have our own.
Most scientists believe it's mutated form of ape (of whatever species) HIV.
As an example, Rhesus Macaque Monkeys carry many deadly human diseases but are immune to the diseases themselves. This is why they were a favorite test subject for drug and virus testing. There's a wild colony (thanks to animal rights twats) in Florida who have an extremely deadly, to humans, type of herpes that they are immune to. Unlike typical human herpes that affects the skin, the RMMs carry a type that attacks internal organs. Chickens have an almost identical type of herpes that is fine, at least for now, for humans to come in contact with.
This is the correct answer. I didn't realise joining a torrent site would come with a side helping of conspiracy theorists.
The real HIV conspiracy is that right wing Adminstrations like Reagan's knew about the rising rates of HIV infections and did nothing to help anyone.