CONTEMPORARY PROBLEMS IN THE EPIDEMIOLOGY OF WHOOPING COUGH.
D002648:Child; D003604:Czechoslovakia; D004813:Epidemiology; D006801:Humans; D007223:Infant; D010567:Pertussis Vaccine; D014917:Whooping Cough
D010567:Pertussis Vaccine
CHILD; CZECHOSLOVAKIA; EPIDEMIOLOGY; INFANT; PERTUSSIS VACCINE; WHOOPING COUGH