Fourth BSE-infected cow found in U.S.; was not in food supply

Posted: April 24th, 2012 - 6:35pm
Source: Meatingplace

USDA Chief Veterinary Officer John Clifford today released the following statement on the detection of BSE in the United States:
“As part of our targeted surveillance system, the U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the nation’s fourth case of bovine spongiform encephalopathy (BSE) in a dairy cow from central California. The carcass of the animal is being held under State authority at a rendering facility in California and will be destroyed. It was never presented for slaughter for human consumption, so at no time presented a risk to the food supply or human health. Additionally, milk does not transmit BSE.
“The United States has had longstanding interlocking safeguards to protect human and animal health against BSE. For public health, these measures include the USDA ban on specified risk materials, or SRMs, from the food supply. SRMs are parts of the animal that are most likely to contain the BSE agent if it is present in an animal. USDA also bans all nonambulatory (sometimes called “downer”) cattle from entering the human food chain. For animal health, the Food and Drug Administration (FDA) ban on ruminant material in cattle feed prevents the spread of the disease in the cattle herd.
“Evidence shows that our systems and safeguards to prevent BSE are working, as are similar actions taken by countries around the world. In 2011, there were only 29 worldwide cases of BSE, a dramatic decline and 99% reduction since the peak in 1992 of 37,311 cases. This is directly attributable to the impact and effectiveness of feed bans as a primary control measure for the disease.
“Samples from the animal in question were tested at USDA’s National Veterinary Services Laboratories in Ames, Iowa. Confirmatory results using immunohistochemistry and western blot tests confirmed the animal was positive for atypical BSE, a very rare form of the disease not generally associated with an animal consuming infected feed.
“We are sharing our laboratory results with international animal health reference laboratories in Canada and England, which have official World Animal Health (OIE) reference labs. These labs have extensive experience diagnosing atypical BSE and will review our confirmation of this form of the disease. In addition, we will be conducting a comprehensive epidemiological investigation in conjunction with California animal and public health officials and the FDA.
“BSE is a progressive neurological disease among cattle that is always fatal. It belongs to a family of diseases known as transmissible spongiform encephalopathies. Affected animals may display nervousness or aggression, abnormal posture, difficulty in coordination and rising, decreased milk production, or loss of body weight despite continued appetite.
“This detection in no way affects the United States’ BSE status as determined by the OIE. The United States has in place all of the elements of a system that OIE has determined ensures that beef and beef products are safe for human consumption: a mammalian feed ban, removal of specified risk materials, and vigorous surveillance. Consequently, this detection should not affect U.S. trade.
“USDA remains confident in the health of the national herd and the safety of beef and dairy products. As the epidemiological investigation progresses, USDA will continue to communicate findings in a timely and transparent manner.”
On Dec. 23, 2003, the first case of BSE was discovered in an adult Holstein cow in Washington state. On June 24, 2005, USDA confirmed BSE in a cow in Texas. On March 15, 2006, the third confirmed positive case of BSE was confirmed in a cow in Alabama.
In July 2006, USDA transitioned to a surveillance program that corresponded to the extremely low prevalence of the disease in the United States. The prevalence in the United States is less than 1 case per million adult cattle.
A spokesman for the U.S. Meat Export Federation declined to comment on whether this discovery would have any impact on U.S. beef exports or relationships with U.S. trading partners.
Live cattle futures were trading sharply lower late Tuesday afternoon on the Chicago Mercantile Exchang

 

Additional Information
Date Published: 
24.apr.12
Publication: 
Meatingplace
Author: 
Rita Jane Gabbett
Source URL: 
http://www.meatingplace.com/MembersOnly/webNews/details.aspx?item=32543
Source Title: 
Meatingplace
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Categories: Animals