Influenza VaccinesInfluenza, HumanVaccinationInfluenza A virusImmunization ProgramsInfluenza A Virus, H1N1 SubtypePapillomavirus VaccinesInfluenza B virusInfluenza A Virus, H3N2 SubtypeMass VaccinationPatient Acceptance of Health CareInfluenza in BirdsHealth Knowledge, Attitudes, PracticeInfluenza A Virus, H5N1 SubtypePandemicsOrthomyxoviridaeSeasonsHemagglutinin Glycoproteins, Influenza VirusHemagglutination Inhibition TestsQuestionnairesOrthomyxoviridae InfectionsAntibodies, ViralVaccines, InactivatedHealth PersonnelDisease OutbreaksImmunization ScheduleUnited StatesInfluenza A Virus, H9N2 SubtypePneumococcal VaccinesInfluenza A Virus, H3N8 SubtypeInfluenza A Virus, H2N2 SubtypeNeuraminidaseInfluenza A Virus, H7N7 SubtypeImmunity, HumoralGuillain-Barre SyndromeVaccines, AttenuatedPopulation SurveillanceInjections, IntradermalHemagglutinins, ViralInfluenza A Virus, H5N2 SubtypeHealth Care SurveysVaccinesOseltamivirInjections, IntramuscularImmunization, SecondaryReminder SystemsAmantadineInfluenza A Virus, H7N9 SubtypeAntibody FormationSentinel SurveillanceInfectious Disease Transmission, Professional-to-PatientPolysorbatesCross ProtectionAntiviral AgentsHealthy People ProgramsReassortant VirusesTime FactorsBirdsPregnancy Complications, InfectiousAge FactorsHospitalizationHepatitis B VaccinesAdjuvants, ImmunologicSqualeneEncephalomyelitis, Acute DisseminatedBacterial VaccinesBehavioral Risk Factor Surveillance SystemViral VaccinesInfluenza A Virus, H1N2 SubtypeCross-Sectional StudiesAdministration, IntranasalSmallpoxMice, Inbred BALB CPreventive Health ServicesTreatment RefusalImmunizationHong KongVaccines, DNASmallpox VaccineCancer VaccinesPersonnel, HospitalAntigens, ViralCenters for Disease Control and Prevention (U.S.)IllegitimacyOrganizational PolicyRisk FactorsPneumococcal InfectionsMeasles VaccineDogsImmunoglobulin GSpainZanamivirMedical StaffAllied Health PersonnelMadin Darby Canine Kidney CellsVaccines, SyntheticPoultryLogistic ModelsInfant, NewbornIncidence