TrichinellosisTrichinellaTrichinella spiralisWalrusesFood ParasitologyUrsidaeAntibodies, HelminthIdahoCarnivoraFuneral RitesMeatMeat ProductsAnimals, WildSus scrofaMebendazoleDisease OutbreaksFood IndustryFood ContaminationAlbendazoleZoonosesAntigens, HelminthAnthelminticsEndemic DiseasesSwineEpidemiologySwine DiseasesLarvaPopulation SurveillanceMolecular Epidemiology