A study of the protective effect of live measles vaccines 13 to 27 months after vaccination.
D000906:Antibodies / Q000032:analysis; D000917:Antibody Formation; D002648:Child; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D008457:Measles / Q000276:immunology / Q000517:prevention & control*; D008458:Measles Vaccine; D010919:Placebos; D013997:Time Factors; D014611:Vaccination
D000906:Antibodies; D008458:Measles Vaccine; D010919:Placebos