A scientifically accepted case of a monkey virus contaminating polio vaccine – Inactivated poliovirus vaccine (IPV) only. Zoonosis References External links Where did HIV come from? Questions and Answers, from the United States Centers for Disease Control 1950s in Africa 1960 in Africa AIDS origin hypotheses Medical-related conspiracy theories Vaccine controversies Polio fr:Origine du virus de l'immunodéficience humaine#La théorie du vaccin anti-polio (en cours d'élaboration)