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Communicable DiseasesCommunicable Disease ControlDisease NotificationQuarantinePopulation SurveillanceCommunicable Diseases, EmergingDisease OutbreaksPublic HealthPublic Health AdministrationDuty to WarnOperations ResearchCommittee MembershipMediterranean RegionWorld Health OrganizationDeveloping CountriesEpidemiologyPatient IsolationCenters for Disease Control and Prevention (U.S.)Public Health PracticeWorld HealthDisease Transmission, InfectiousDecontaminationInternational CooperationHealth PrioritiesWalesNight CareHygieneOrganizational PolicyHistory, 21st CenturyHistory, 20th CenturyTravelAfricaIncidenceInfection ControlSentinel SurveillanceSeasonsUnited StatesSingaporeRisk FactorsMeaslesEmigration and ImmigrationPrevalenceEnglandTuberculosisHealth PolicyEpidemiologic MethodsEuropeUnited States Food and Drug AdministrationInfluenza, HumanGreat BritainCost of IllnessQuestionnairesCause of DeathDiarrheaEducation, Medical, ContinuingResearchDelivery of Health CareHealth PersonnelBody BurdenInfant, NewbornData CollectionUrban PopulationAge DistributionHIV InfectionsChronic DiseaseSocioeconomic FactorsRetrospective StudiesCross-Sectional StudiesInterviews as TopicSex DistributionTime FactorsRegistriesHealth Knowledge, Attitudes, PracticeFearTumor BurdenBiological WarfareConservation of Natural ResourcesBioterrorismEndangered SpeciesCaregiversHealth Care CostsSecurity Measures