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Supertopics:
Pathogenic Strains of E coli
E Coli O157:H7
Subtopics:
E Coli O157:H7 Contaminating Crops
E coli in leafy vegetables tends to lead back to cows
web
Teresa Carr
The Guardian
2020-09-01
destroying farmland to save it from E Coli
web
Carolyn Lochhead
San Francisco Chronicle
2009-07-13
cattle ranch was source of spinach E coli
web
George Raine
San Francisco Chronicle
2007-03-23