Assessment of smallpox immunity status in Haryana state by scar survey 1970.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002921:Cicatrix; D006801:Humans; D007110:Immunity, Active; D007194:India; D007223:Infant; D007231:Infant, Newborn; D012424:Rural Population; D012899:Smallpox / Q000453:epidemiology / Q000517:prevention & control*; D014505:Urban Population; D014611:Vaccination