There are a few lonely scientists out there who dont believe in the HIV AIDS link. They think thatAIDS in haemophiliacs is caused by repeated factor VIII use, in drug users is caused by the drugs, in africa is caused by malnutrition and in homosexuals is caused by the use of poppers (and other drug use) (poppers cause headaches, headaches lead to increased aspirin use which in conjuction with heavy alcohol use can cause some of the illnesses which are used as markers for AIDS - I kid you not, I just read this).