Researchers with the U.S. Department of Agriculture’s Agricultural Marketing Service have isolated Escherichia (E.) coli O157:H7 from a variety of pest flies in leafy green fields planted up to 180 meters away from cattle feedlots.  Among most fly species captured on sticky traps at leafy green farms, 22.3-29 flies per 1,000 flies carried E. coli O157:H7. … Continue Reading