NATIONAL  ·   April 25, 2012

Mad cow disease discovered in California

- The government reported a new case of mad cow disease discovered in California - the first in the U.S. in six years. Wyatt Andrews reports on the findings and the threat to public health. ()

- The government reported a new case of mad cow disease discovered in California - the first in the U.S. in six years. Wyatt Andrews reports on the findings and the threat to public health. ()

Mad cow disease discovered in California (2:42)

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