A 20-year-old man presented with hemorrhagic colitis. The stool sample grew Escherichia coli in pure culture. The following serotype of E.coli is likely to be a causative agent -

Enterohemorrhagic E.coli dysentery can lead to complications like hemorrhagic uremic syndrome and hemorrhagic colitis. Serotypes’ associated with EHEC are O157:H7 and O26:H1 Similar illness also produced by Shigella dysenteriae type1