Incidence and Tracking of Escherichia coli O157:H7 in a Major Produce Production Region in California Cooley, Michael ; Carychao, Diana ; Crawford-Miksza, Leta ; Jay, Michele T. ; Myers, Carol ; Rose, Christopher ; Keys, Christine ; Farrar, Jeff ; Mandrell, Robert E. Abstract Publication: PLoS ONE Pub Date: November 2007 DOI: 10.1371/journal.pone.0001159 Bibcode: 2007PLoSO...2.1159C