Identification of transmission foci of hydatid disease in California.
D000818:Animals; D002140:California; D004197:Disease Reservoirs; D004283:Dog Diseases; D004285:Dogs; D004443:Echinococcosis / Q000453:epidemiology / Q000662:veterinary*; D004444:Echinococcosis, Hepatic / Q000175:diagnosis; D004445:Echinococcosis, Pulmonary / Q000175:diagnosis; D006801:Humans; D012756:Sheep; D012757:Sheep Diseases