Mass campaign against smallpox in Thailand.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007115:Immunization Schedule; D007231:Infant, Newborn; D008297:Male; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine; D013785:Thailand; D014611:Vaccination
D012900:Smallpox Vaccine