<prompt> Hemorrhagic colitis is caused by which strain of E. coli-EnteropathogenicEnterotoxigenicEnteroinvasiveEnterohemorrhagic  <response>: Ans. is d i.e., Enterohemorrhagic O 157: H7 is the most prominent serotype of EHEC, associated with HUS, but 06,026,055,091,0103,0111,0113 and OX3 have also been associated with this syndrome.Specific diseases caused by different pathotypes Enteropathogenic E coli EPEC-Watery diarrhea in Infants and children Entero toxigenic E. coli ETEC-Travellers diarrhea and me cause of diarrhea in children of developing countries. Entero invasive E. coli EIEC-Diarrhea to dysentry similar to shigellosis Enterohemorrhagic E. coli EHEC-Hemolytic uremic syndrome, Hemorrhagic colitis Enteroaggregative E.coli-Persistant diarrhea Extraintestinal pathogenic strains-UTI, Abdominal pelvic infections, meningitis, Septicemia. 