TrichinellosisTrichinellaTrichinella spiralisWalrusesParasitic DiseasesFood ParasitologyUrsidaeAntibodies, HelminthIdahoCarnivoraFuneral RitesMeatMeat ProductsAnimals, WildSus scrofaMebendazoleDisease OutbreaksFood IndustryAntigens, HelminthAnthelminticsAlbendazoleZoonosesFood ContaminationEndemic DiseasesSkin Diseases, ParasiticSwineProtozoan InfectionsLarvaSwine DiseasesSchistosomiasisAntiparasitic AgentsEnzyme-Linked Immunosorbent AssayPopulation SurveillanceAmoebida