TrichinellosisTrichinellaTrichinella spiralisWalrusesFood ParasitologyUrsidaeAntibodies, HelminthIdahoCarnivoraAnimals, WildFuneral RitesMeatMeat ProductsSus scrofaMebendazoleDisease OutbreaksFood IndustryFood ContaminationAlbendazoleZoonosesAntigens, HelminthAnthelminticsSwineLarvaSwine DiseasesPopulation Surveillance