Letter: Measles immunity and revaccination.
D000914:Antibodies, Viral / Q000032:analysis*; D002648:Child; D006801:Humans; D007117:Immunization, Secondary; D008457:Measles / Q000517:prevention & control*; D008458:Measles Vaccine / Q000008:administration & dosage; D008459:Measles virus / Q000276:immunology*
D000914:Antibodies, Viral; D008458:Measles Vaccine