TrichinellosisTrichinellaDisease OutbreaksTrichinella spiralisWalrusesFood ParasitologyUrsidaeAntibodies, HelminthIdahoCarnivoraFuneral RitesMeatMeat ProductsAnimals, WildSus scrofaMebendazoleFood IndustryFood ContaminationAlbendazoleZoonosesAntigens, HelminthAnthelminticsSwineSwine DiseasesLarvaPopulation Surveillance