vaccine misconception oral polio vaccine AIDS hypothesis https://en.wikipedia.org/wiki/Oral_polio_vaccine_AIDS_hypothesis https://www.wikidata.org/wiki/Q3984114 A pseudoscientific concept which posits that the HIV/AIDS pandemic originated from live polio vaccines prepared in chimpanzee tissue cultures, accidentally contaminated with SIV virus and then administered to up to one million Africans between 1957 and 1960 in experimental mass vaccination campaigns. Data analyses in molecular biology and phylogenetic studies contradict the OPV AIDS hypothesis; consequently, scientific consensus regards the hypothesis as disproven. OPV AIDS hypothesis