Escherichia coli

From Cow
Transmission electron microscopy of E. coli

Escherichia coli are a normal bacteria of the large intestine of cattle. It is an anaerobic, rod-shaped organism.

The principal pathogenic effect of this bacterium in cattle is scours in newborn calves.

Enterohaemorrhagic E. coli (EHEC) have been isolated in cattle without disease, suggesting that cattle may be a reservoir for this bacteria which causes haemorrhagic colitis in other species[1].


  1. Karch H et al (2009) Epidemiology and pathogenesis of enterohaemorrhagic Escherichia coil. Berl Munch Tierarztl Wochenschr 122(11-12):417-424