title: From smallpox to polio and beyond: disease surveillance in India.
authors.affiliation: World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland. heymannd@who.int
authors.forename: David L
authors.initials: DL
authors.lastname: Heymann
mesh_terms: D003140:Communicable Disease Control; D006801:Humans; D007194:India / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011159:Population Surveillance; D012899:Smallpox / Q000453:epidemiology / Q000517:prevention & control*