There exist a couple of good documentations about this topic. I guess the problem started right when the connection between HIV and AIDS was done the first time by a university in afaik the USA. They released a paper or something claiming to have found a connection but later on it turned out their results were pretty much wrong. At this point many had jumped on that train though and things still seemed to make sense...

Unfortunately nowadays the entire HIV leads to AIDS thing becomes more and more uncertain and when just caring about the HIV stuff something might be missed. But I'm neither a physician nor up-to-date on that topic so I cannot explain or describe much...