title: [Vaccination of repeatedly negative children against smallpox].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007115:Immunization Schedule; D007223:Infant; D007231:Infant, Newborn; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine / Q000008:administration & dosage*; D013997:Time Factors; D014611:Vaccination
chemical_list: D012900:Smallpox Vaccine
vernacular_title: Ockování opakovanĕ negativních dĕtí proti nestovicím