title: Ciro de Quadros.
authors: Geoff
authors: G
authors: Watts
mesh_terms: D000569:Americas; D060740:Disease Eradication; D005002:Ethiopia; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D008297:Male; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000517:prevention & control*; D011634:Public Health; D012899:Smallpox / Q000517:prevention & control*