[ON THE EFFECTIVENESS OF PERTUSSIS VACCINATIONS].
D002648:Child; D006801:Humans; D007223:Infant; D010567:Pertussis Vaccine; D013223:Statistics as Topic; D014586:USSR; D014611:Vaccination; D014917:Whooping Cough
D010567:Pertussis Vaccine
CHILD; INFANT; PERTUSSIS VACCINE; STATISTICS; USSR; VACCINATION
OB EFFEKTIVNOSTI PROTIVOKOKLIUSHNYKH PRIVIVOK.