Hours after Canadian agriculture officials announced that an Alberta cow had contracted BSE, companies involved in selling beef responded.

Outback Steakhouse, Burger King and Tyson Foods were among the earliest to get information out about their own usage of beef and to calm possible fears that BSE will find its way into the U.S. meat supply.

Outback said in a release that its restaurants serve only U.S.D.A. top choice or prime U.S. Midwestern grain-fed beef. The company requires all of its beef suppliers to confirm in writing that the cattle used for its restaurants have been raised and fed in compliance with the U.S. government regulations designed to prevent BSE in the U.S.

Burger King, which uses meat from Canadian sources, said in a release that it has rigorous product safety procedures in place for its suppliers to ensure that its meat products cannot be contaminated at any stage in the production process.

A Tyson release said “We believe Canadian officials are taking appropriate steps in this matter. As they have indicated, this is believed to be an isolated case and poses no risk to consumers since the animal in question was not processed into beef. This also means there is no reason to be concerned about the safety of Canadian beef products already in the U.S. or in the production pipeline.”

Source: Tyson Foods, Burger King, Outback Steakhouse