Year of great discovery/work
1960s and 1970s
Foege refuted the need for herd immunity to achieve smallpox eradication. Instead, he suggested, by actively surveying and containing outbreaks, the disease could be stopped from spreading. His method proved successful in completely eliminating smallpox from the face of the earth. He authored a book about the experience titled House on Fire: The Fight to Eradicate Smallpox.
Foege was a missionary in Africa before his work with smallpox. He used what he knew about Africa and its people to eradicate smallpox.