TABLE 1

Characteristics of Included Studies

StudyNo. Patients IncludedStudy InclusionTestingCurrent Season Vaccination Status Data Source(s)Previous Season Vaccination Status Data Source(s)
USFLUVE, CDC6793ARI with cough ≤7 d durationRT-PCRElectronic medical record and immunization registriesElectronic medical record and immunization registries
LSU3822Clinical laboratory testing for influenzaRapid antigen test and respiratory viral panel of rapid antigen test–negativesImmunization registryImmunization registry
ICICLE, MedImmune3521ARI with fever <5 d durationRT-PCRElectronic medical record and immunization registriesElectronic medical record and immunization registries
Department of Defense Global, Laboratory-based, Influenza Surveillance Program, USAFSAM1935ARI with fever and cough and/or sore throat <72 h durationViral culture and RT-PCRImmunization registry and parent reportImmunization registry
IISP, CDC1102ARI with fever and cough and/or sore throat ≤7 d durationRT-PCRElectronic medical record and immunization registriesImmunization registry
  • ARI, acute respiratory infection.