The<unk><unk>  vaccine (OPV)<unk><unk>  is a now-discredited<unk>  that the<unk>  pandemic originated from live<unk>  vaccines prepared in chimpanzee tissue cultures, accidentally contaminated with simian immunodeficiency 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<unk><unk> ; consequently, scientific consensus regards the<unk>  as disproven. A 2004 Nature article has described the<unk>  as "refuted".
Oral polio vaccine AIDS hypothesis
Vaccines for Children Program
Timeline of human vaccines
Australian Vaccination-risks Network
AIDS Vaccine Bike Trek
HIV/AIDS in Europe
Global action plan for influenza vaccines
International Certificate of Vaccination or Prophylaxis