text: I recently watched a special on The History Channel or Discovery Channel. The Origin of Aids.\n\nBasically, there were two big scientist in the 1940s-50s working on a vaccine for Polio. One scientist used the right primate and the other used one that he knew had a strain of a similar virus to HIV.  The "bad" scientist was working on an oral polio and he tried it on a group in Africa because they had little health care.  The other scientist used injectable polio vaccine.  In the 1970's it was discovered.  The highest concentration was in Africa.  As you might know, practically the entire continent is infected.  All it takes is a few people.  They probably realized it in Homo-sexual males first because it's easier to transmit HIV through micro tears of the anus when anal sex is perfomed.\n\nSo, to eliminate one devistating disease, science risked for another.  Polio was more devistating than HIV/AIDS is now.  The real pissy thing is; the bad scientist didn't have to use chimps or oral polio, he could have used the high monkey and injectable.\n\nNotice why they don't use oral polio for pediatric vaccinations any more.