TrichinellosisTrichinellaTrichinella spiralisDisease OutbreaksFood ParasitologyWalrusesUrsidaeAntibodies, HelminthCarnivoraMeatIdahoThiabendazoleFuneral RitesSus scrofaMeat ProductsAnimals, WildZoonosesAlbendazoleMebendazoleFood IndustryFood ContaminationSwineFoodborne DiseasesAntigens, HelminthNeurologic ManifestationsAnthelminticsPopulation SurveillanceSwine DiseasesLarva