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