Article: Animal Suspected of Having Mad Cow Disease Is Uninfected

An animal suspected of having mad cow disease based on a new rapid screening test has turned out to be uninfected, the Agriculture Department said yesterday.

USDA chief veterinarian John Clifford said more sophisticated testing conducted at the National Veterinary Services Laboratories in Ames, Iowa, showed that the cow was free of the disease.

The government has said that the new rapid testing is highly sensitive and known to produce false positive results for mad cow disease, known formally as bovine spongiform encephalopathy. Clifford said the USDA intends to continue announcing initial "inconclusive" results from the rapid screening to be "transparent" and open about its mad cow ...

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