NorovirusDisease OutbreaksCaliciviridae InfectionsGastroenteritisFoodborne DiseasesFecesSapovirusVirus InactivationFood HandlingFood ContaminationCaliciviridaeFood MicrobiologyOstreidaePhylogenyBlood Group AntigensWater MicrobiologyCapsid ProteinsShipsSalmonella Food PoisoningMolecular EpidemiologyNorwalk virusRNA, ViralCross InfectionShellfishDisinfectionPopulation SurveillanceSeasonsGenotypeCalicivirus, FelineLettuceSequence Analysis, DNAVaccines, VirosomeCommunicable Diseases, EmergingDiarrheaReverse Transcriptase Polymerase Chain ReactionSwimming PoolsInfection ControlMolecular Sequence DataHepatitis A virusRotavirus InfectionsAntibodies, ViralRotavirusWater SupplyFomitesVirologyResidential FacilitiesElectrophoresis, Gel, Pulsed-FieldVirus SheddingMamastrovirusTravelCluster Analysis