title: Variolation in the Rajasthan Desert.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007114:Immunization; D007194:India; D007223:Infant; D007231:Infant, Newborn; D008519:Medicine, Traditional; D008875:Middle Aged; D012424:Rural Population; D012899:Smallpox / Q000517:prevention & control*