USDA and CDC start to test beef for more enterohemorrhagic strains of E. coli
Most strains of Escherichia coli, or E. coli, are harmless. But some produce toxins that can sicken or kill people. The USDA banned the most commonly enterohemorrhagic strain identified — E. coli O157:H7 — from raw ground beef, a pathogen that can attach to vegetables and survive. It’s scheduled to ban another six enterohemorrhagic strains in past June. Birds and flies are usual vectors of these enteric pathogens.