Four more cows located from Canadian herd

WASHINGTON -- The government has now located 23 of the 81 head of Canadian cattle that included the Holstein discovered in the United States with mad cow disease, the Agriculture Department said Monday. Four animals were recently located in Washington state, three at a facility in Tenino and one in Connell. No additional cases of the disease have been found, the department said. Mad cow is a concern because humans can get a related illness, variant Creutzfeldt-Jakob disease, from eating contaminated meat. That concern prompted countries to close their borders to American beef last month.