USDA's Animal and Plant Health Inspection Service (APHIS) is reclassifying
This week's downgrade is the result of cows in three
USDA and California Department of Food and Agriculture (CDFA) personnel continue efforts to investigate those cases. Veterinarians and animal health professionals from across the state and nation are helping with the effort.
Because of the APHIS action, breeding cattle or bison leaving
Since this bovine tuberculosis investigation began in December 2007, more than 145 herds and over 180,000 cattle have been tested, according to CDFA. Seven infected cattle have been identified. Although the source of the infection has not been identified, the bacteria strain-type in one herd differs from that in the other two herds, and both are typical of those infecting dairy cattle in the
All cattle from two of the affected herds have been removed and the third herd is under movement controls and a testing program to remove infected cattle and prevent any spread of disease.
APHIS also downgraded
Bovine tuberculosis does not threaten the quality and safety of milk and meat products produced in
Bovine tuberculosis is caused by Mycobacterium bovis, an organism very similar to the bacteria causing human tuberculosis. It can affect cattle, bison, deer, elk and other warm-blooded species, and can be fatal.
Catherine Merlo is Western editor for Dairy Today. You can reach her at email@example.com.