title: Letter: B.C.G. at school.
mesh_terms: D000293:Adolescent; D001500:BCG Vaccine; D002648:Child; D002675:Child, Preschool; D004739:England; D006801:Humans; D012572:School Health Services; D014397:Tuberculosis, Pulmonary / Q000517:prevention & control*
chemical_list: D001500:BCG Vaccine