http://www.wisinfo.com/thereporter/news/archive/local_13891777.shtmlMad cow disease expert says precautions may be too late
By Patty Brandl
the reporter pbrandl@fdlreporter.com
Although the federal government announced last week that it is taking precautions to ensure a safe beef supply, it might be too little too late, says the Madison author of a book on mad cow disease.
“We have not taken this disease seriously,” John C. Stauber, author of “Mad Cow USA,” said in a telephone interview on Friday.
He said three recent tests performed by government agencies on a Washington state cow suspected of carrying the disease all have verified the strain of bovine spongiform encephalopathy (BSE) as the same one found in Great Britain in 1997.
Tests conducted by researchers from the Veterinary Laboratories Agency in Weybridge, England, agreed with U.S. preliminary findings that the Holstein had BSE.
“This cow should have never been slaughtered and put in our food system,” Stauber said.
The good news about the 1997 infected beef crisis in Great Britain is that it only killed 130 people, Stauber said. The bad news is that people have been dying from meat they ate 10 years ago.
One of the characteristics of the brain-wasting disease is a dormant period, both in the infected animal and in humans who contracted Creutzfeldt-Jacob Disease, which researchers believe is connected to BSE, the author said.
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Stauber said government reports have indicated that the infectious protein or prion is only found in the brain tissue or spine of an infected animal, but other studies point to nerves and blood vessels as another potential source of contamination in the meat supply.
The BSE incubation period in cattle is anywhere from three to eight years.
“For this 4-year-old animal (in Washington state) to develop this disease, it would have had to ingest the prion as a calf,” he said. “This cow consumed feed in the United States that was probably contaminated with rendered cattle byproducts.”
And an easy path of transmission, according to the Madison author, would have been through the dried raw cattle blood protein that’s not only legal to include in animal feed in the United States, but is commonly used as a protein source in certain calf supplements.
“Farmers around here are stunned when they find out their calf feed contains cattle blood,” he said.
Stauber said some analysts believed early in 1997 that without an effective feed ban in place in this country, just one case of BSE could cause another 299,000 cases over the next 11 years.
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