How is AIDS transmitted??

I heard that one of the hypothesis for origin of AIDS was a sexual intercourse between human and orangutan or something in Africa.
And because of that very first infection it spread all over the world today.

And that HIV is transmitted when you have unprotected sex with a person WITH HIV. (Excluding all other factors such as blood contact, etc)

Does that mean the sexual intercourse between two HIV free humans can't be a cause of AIDS?
(In a circumstance where either of humans don't have sex with other people)

Also, do you guys think that HIV was Europeans' intentional exposure to black race to wipe them out in Africa? (It's another hypothesis)

ALSO, I heard that some people are immune to HIV . What's so special about them? Are there any ways to study such people's biological characteristic and manipulate other people's DNA or something to prevent it from happening? Also!! Can stem cell be a solution to cure AIDS?

Noone knows exactly how HIV originated. Some hypothesize it was from a tribe in Africa eating infected uncooked monkey brains, but who knows. Now, HIV can be contracted by unprotected sex with an infected person, or if an infected person's blood comes in contact with your own. HIV cannot come about from two uninfected people having sex with each other.

Smallpox was used as a tool for genocide against the American Indians when immigrants came over, and there are many other examples of genocide throughout history. However, because the first case of HIV was traced back to Africa, this is not likely in this case. Humans don't have the capability of creating a virus this complex from the lab, and even if they did, I think we'd be a little closer to finding a cure. That assertion has little credibility.

Finally, those that are immune to HIV actually have a genetic mutation in a gene that codes for a specific receptor in the immune system cells that HIV uses to gain entrance into the cells. Knocking out this gene in every person to stop the spread of AIDS is not feasible at this point - expense wise or technology wise - and would likely lead to other immune system weaknesses.

One theory is that it came from a bite from an infected monkey, not from bestiality. I think the bestiality story is just a racist concept.

It is an STD. One of the partners would have to be carrying the disease.

Since people of all races get it, the genocide claim is ridiculous.

www.hpvinfo.com
www.righthealth.com