title: A continuing measles outbreak among school-age children despite an outbreak-control program with school exclusion--Pennsylvania.
mesh_terms: D002648:Child; D006801:Humans; D008457:Measles / Q000453:epidemiology* / Q000517:prevention & control; D008458:Measles Vaccine / Q000008:administration & dosage; D010414:Pennsylvania
chemical_list: D008458:Measles Vaccine