OUTBREAK OF INFLUENZA: EVIDENCE THAT IMMUNIZATION PROTECTS AGAINST TYPE A.
D002648:Child; D004196:Disease Outbreaks; D006801:Humans; D007114:Immunization; D007252:Influenza Vaccines; D007251:Influenza, Human; D014611:Vaccination
D007252:Influenza Vaccines
CHILD; INFLUENZA VACCINE