The U.S. Department of Agriculture’s (USDA) Food Safety and Inspection Service has begun instituting a zero-tolerance policy for six additional strains of E. coli that are responsible for human illness. According to a May 31 USDA press release, the Food Safety and Inspection Service will routinely test raw beef manufacturing trim, which is a major component of ground beef, for the six additional strains of E. coli. Trim found to be contaminated with these pathogens will not be allowed into commerce and will be subject to recall. . . .