Extraterrestrial EnvironmentMarsMoonVanuatuPopulation SurveillanceSentinel SurveillancePublic Health SurveillanceProduct Surveillance, PostmarketingImmunologic SurveillanceDisease OutbreaksDisease NotificationPublic Health InformaticsUnited StatesIncidenceEpidemiological MonitoringBehavioral Risk Factor Surveillance SystemCommunicable Diseases, EmergingSEER ProgramBioterrorismInfluenza, HumanSeasonsCommunicable DiseasesWatchful WaitingCenters for Disease Control and Prevention (U.S.)Communicable Disease ControlInfant, NewbornPrevalenceRisk FactorsEpidemiologic Measurements