Coli investigation. The CDA Microbiology Laboratory analyzed dozens of subsamples from all the lots and all samples were found to be negative for E. coli. CDA has completed all beef testing and ...
coli investigation came back negative. The tests were conducted at the CDA Microbiology Laboratory. All samples tested came back showing no traces of E. coli. The CDA says they have no information ...
Colorado has seemingly eliminated one ingredient in the McDonald's Quarter Pounder hamburger E. coli outbreak as a cause for ...