CampylobacterCampylobacter fetusCampylobacter InfectionsCampylobacter coliCampylobacter jejuniCampylobacter lariArcobacterEpidemiologyEnteritisFecesDimetridazoleMolecular EpidemiologyCampylobacter hyointestinalisAbattoirsWaste Disposal, FluidFood MicrobiologyAbortion, SepticHippuratesChickensBacterial Typing TechniquesSerotypingPoultry DiseasesPoultryCulture MediaAnimals, DomesticColony Count, MicrobialWater MicrobiologyDNA, BacterialSeasonsFlagellinBacteriological TechniquesHelicobacterDiarrheaHot TemperaturePolymerase Chain ReactionMeatSewageCattleSequence Analysis, DNARNA, Ribosomal, 16SSpecies SpecificityIncidenceMolecular Sequence DataSEER ProgramPrevalenceDisease OutbreaksRisk FactorsUnited StatesEpidemiologic MethodsBias (Epidemiology)Population SurveillanceAge DistributionConfounding Factors (Epidemiology)Infant, NewbornEpidemiologic Research DesignGenotypeAge FactorsPhylogenyCross InfectionPublic HealthElectrophoresis, Gel, Pulsed-FieldDNA FingerprintingCluster AnalysisLaboratory PersonnelSex DistributionRetrospective Studies