HIV does not cause AIDS, no scientific data has proven this hypothesis. 95% of people with HIV don't develop AIDS. HIV has existed for hundreds of years and is harmless. AIDS almost only affects drug users, and drug use has exploded in recent decades causing the "pandemic" in America. Many homosexuals have AIDS because they happen to use high amounts of drugs. There is no AIDS "virus". It is not spread by sex. The powerful drugs used to treat HIV are not needed and only increase the risk of AIDS and death.
AIDS in Africa is a myth. African "AIDS" has totally different characteristics than in the US and the rest of the world. The viruses and pandemics in Africa are caused by the same things that caused them a hundred years ago (no new killer virus).
AIDS research is a billion dollar industry and many careers are at stake. Scientists who dissent find themselves without a job. Gay and political groups prefer the idea of a killer virus striking innocent people, rather than the truth that people get AIDS because of their lifestyle choices.
More about the AIDS myth:
http://www.mininova.org/tor/182260