title: SEROLOGICAL STUDIES ON SECOND ATTACKS OF MEASLES AND RUBELLA.
mesh_terms: D002648:Child; D003168:Complement Fixation Tests; D004813:Epidemiology; D006801:Humans; D007223:Infant; D008457:Measles; D009500:Neutralization Tests; D012409:Rubella
keywords: CHILD; COMPLEMENT FIXATION TESTS; EPIDEMIOLOGY; INFANT; MEASLES; NEUTRALIZATION TESTS; RUBELLA