Pertussis surveillance--United States, 1984 and 1985.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006760:Hospitalization; D006801:Humans; D007223:Infant; D011159:Population Surveillance; D014481:United States; D014611:Vaccination; D014917:Whooping Cough / Q000150:complications / Q000453:epidemiology* / Q000517:prevention & control