[The role of various factors in pertussis morbidity among vaccinated children].
D000941:Antigens / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D006801:Humans; D010567:Pertussis Vaccine / Q000032:analysis; D014586:USSR; D014611:Vaccination; D014917:Whooping Cough / Q000517:prevention & control*
D000941:Antigens; D010567:Pertussis Vaccine
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