The impact of immunisation on childhood infections in Singapore.
D000293:Adolescent; D001424:Bacterial Infections / Q000453:epidemiology* / Q000517:prevention & control; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007114:Immunization; D007223:Infant; D007231:Infant, Newborn; D012846:Singapore; D014777:Virus Diseases / Q000453:epidemiology* / Q000517:prevention & control