Efficiency of smallpox revaccination repeated at three-year intervals. II. Comparative study of the international reference strain (Elstree) and the Hungarian vaccine strain (Budapest).
D000328:Adult; D000917:Antibody Formation; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D006814:Hungary; D007115:Immunization Schedule; D008875:Middle Aged; D009500:Neutralization Tests; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine / Q000008:administration & dosage; D013223:Statistics as Topic; D014616:Vaccinia virus
D012900:Smallpox Vaccine