Escherichia coli Gastroenteritis Occurs as traveler's diarrhea and epidemic diarrhea in nurseries 50%of feedlot cattle may have enterohemorrhagic strains in their intestines Enterohemorrhagic strains such as E.coli O157:H7 produce Shiga toxin ·o=cell wall antigen 。H=flagellar antigen • Occurs as traveler's diarrhea and epidemic diarrhea in nurseries • 50% of feedlot cattle may have enterohemorrhagic strains in their intestines • Enterohemorrhagic strains such as E. coli O157:H7 produce Shiga toxin • O = cell wall antigen • H = flagellar antigen Escherichia coli Gastroenteritis