“…These categories include enteropathogenic E. coli, enterotoxigenic E. coli, enteroinvasive E. coli, enteroag‐gregative E. coli, diffuse adherent E. coli, and enterohemorrhagic E. coli (also known as shiga toxin‐producing E. coli ). The most commonly occurring of these is the enterohemorrhagic strain known as E. coli O157, which has been the causative agent in several waterborne disease outbreaks (Barwick et al, 2000; Swerdlow et al, 1992; CDC, 1991; O'Mahony et al, 1986; Rosenberg et al, 1977; Schroeder et al, 1968). The pathogenic E. coli strains produce symptoms ranging from mild diarrhea to severe watery or bloody diarrhea, cramping, headache, and in some cases hemolytic uremic syndrome, which may result in kidney failure or even death (Barwick et al, 2000; Paton & Paton, 1998).…”