title: CHANGING PATTERNS OF DIPHTHERIA, OMAHA-DOUGLAS COUNTY,1880-1963. COMMENT ON FAMILY IMMUNIZATION USING LEAP YEAR AS A GUIDE.
mesh_terms: D000293:Adolescent; D002648:Child; D004165:Diphtheria; D004813:Epidemiology; D006664:History; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007114:Immunization; D007223:Infant; D007231:Infant, Newborn; D008511:Medicine; D009017:Morbidity; D009026:Mortality; D009329:Nebraska; D013223:Statistics as Topic; D014611:Vaccination
keywords: ADOLESCENCE; CHILD; DIPHTHERIA; EPIDEMIOLOGY; HISTORY; HISTORY OF MEDICINE, 19TH CENT.; HISTORY OF MEDICINE, 20TH CENT.; IMMUNIZATION; INFANT; INFANT, NEWBORN; MORBIDITY; MORTALITY; NEBRASKA; STATISTICS