The return of pertussis.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010567:Pertussis Vaccine; D014481:United States; D014917:Whooping Cough / Q000453:epidemiology* / Q000517:prevention & control
D010567:Pertussis Vaccine