Scientists confirm mad cow finding in US

5.20pm


WASHINGTON - The US Department of Agriculture said today it was convinced that a Washington state dairy cow had mad cow disease after British scientists reviewed USDA tests on the slaughtered animal and concluded those tests were interpreted correctly.

This week's discovery of mad cow disease in the United States presents the biggest challenge to consumer confidence in the food supply since a crisis three years ago when biotech corn not approved for human consumption showed up in hundreds of supermarket products.

A Holstein cow slaughtered on December 9 in a tiny town in Washington state was the first animal that tested positive for mad cow disease in the United States, sending shock waves through the $27 billion US cattle industry and shutting down American beef sales to major foreign buyers.

A USDA statement said the British review confirmed the mad cow finding. USDA spokeswoman Alisa Harrison said British scientists will perform additional tests, but "we just don't anticipate that it will be any different."

Federal investigators are scouring records to chart the life of the animal and any evidence that others in its birth herd may have consumed contaminated feed.

Mad cow, or bovine spongiform encephalopathy, is a brain-wasting disease thought to be transmitted from animal feed containing bovine brains or spinal cord. The United States bans the use of those materials in feed.

But some consumer groups argue that illegal feed might not be the only culprit, warning that as carcasses are processed, high-risk material could accidentally contaminate the beef.

The first known US case of mad cow has prompted those groups to call for tighter beef industry regulations.

Scientists believe people can contract a human variant of mad cow by eating beef products infected by BSE. An outbreak of mad cow disease in Britain and other European countries over a decade ago, when few protections were in place, has resulted in 137 human deaths so far.

US Agriculture Secretary Ann Veneman, in announcing the Washington state mad cow case on Tuesday, insisted American beef remained safe. She has noted a lone case of BSE in Canada last spring did not dampen beef consumption in North America.

But investors fear consumers could reverse a beef-eating binge fuelled in part by popular high-protein diets.

In trading yesterday, fast-food hamburger restaurants like McDonald's, Burger King and Wendy's saw stock prices drop and cattle futures fell by the limit allowed by the exchange.

In 2000, vast amounts of taco shells and more than 300 other corn-based products were whisked off market shelves after a genetically modified corn variety, StarLink, was found in the food supply. The product was approved only for animal feed and the episode dealt a severe blow to US-Japan food trade.

The coming days and weeks will test American consumers' response to the mad cow case.

Andy Hemmendinger, 45, who lives in a suburb of Washington, said he would now "probably wait a little bit" before buying beef in a restaurant, "just to see what they find."

He added that the beef he eats at home two or three times a week is usually organically grown and said he wanted to know more about the transmission of mad cow disease.

"You're always torn between over-reacting because one thing happens and being foolish for not finding out what you can and making a good decision," he told Reuters.

Trading partners immediately closed their borders.

Japan, South Korea and Mexico, the three top buyers of the $3 billion worth of beef the United States exports annually, quickly suspended American beef imports. China, a potentially huge market for US beef, followed today.

The Gulf Arab state of Qatar also banned US beef imports today, as did neighbouring United Arab Emirates, a major regional trading and re-export hub, a day earlier.

But the Bush administration and US industry want to move away from the long-term trade bans prompted by the EU epidemic, if countries that experience isolated cases of mad cow have strong programmes in place to prevent the disease's spread.

Chandler Keys, vice president of the National Cattlemen's Beef Association, told reporters on Wednesday: "I think it's time for all of us to sit down and say enough's enough on this irrational behaviour. We need to come back to sound science."

- REUTERS