title: Clinical and serologic study of four smallpox vaccines comparing variations of dose and route of administration. Summary.
mesh_terms: D002648:Child; D006801:Humans; D007271:Injections, Intradermal; D012899:Smallpox / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000008:administration & dosage*; D014611:Vaccination; D014944:World Health Organization
chemical_list: D012900:Smallpox Vaccine