TrichinellosisTrichinellaTrichinella spiralisWalrusesMeatFood ParasitologyDisease OutbreaksUrsidaeAntibodies, HelminthMeat ProductsIdahoCarnivoraFuneral RitesAnimals, WildSus scrofaMebendazoleFood IndustryFood ContaminationZoonosesAlbendazoleAntigens, HelminthSwineAnthelminticsSwine DiseasesLarvaPopulation Surveillance