title: Diphtheria and poliomyelitis immunization in preschool children in two towns in Central New South Wales.
mesh_terms: D001315:Australia; D002675:Child, Preschool; D004165:Diphtheria / Q000517:prevention & control*; D005006:Ethnicity; D006801:Humans; D007114:Immunization; D007115:Immunization Schedule; D007117:Immunization, Secondary; D007223:Infant; D011051:Poliomyelitis / Q000517:prevention & control*; D000095283:Australian Aboriginal and Torres Strait Islander Peoples