<prompt> All are true about EHEC, except:Sereny test is positiveFerments sorbitolCauses HUSElaborates shiga like exotoxin  <response>: Sereny Test is given only by EIEC. Ref: Text Book of Microbilogy By Ananthanarayan, 6th Edition, Page 257 ; Harrisons Principles of Internal Medicine, 14th Edition, Page 938 and 15th Edition, Page 955 