Expanded E. Coli Testing on Hold Until June 4, U.S. Says

Expanded E. Coli Testing on Hold Until June 4, U.S. Says

A March deadline for companies to start tests for six strains of potentially deadly E. coli bacteria has been pushed to June 4 so meatpackers can make sure their methods work, the U.S. Agriculture Department said. Photo: Sean Gallup/Getty Images