Most common cause of hemolytic uremic syndrome is -

Ans. is 'a' i.e., E.coli Etiology of HUS HUS usually follows an episode of acute gastroenteritis. o Less commonly, patient may present after an upper respiratory tract infection. o The organisms responsible are - E.coli (most common) EHEC (shiga toxin producing) Salmonella Shigella dysenteriae Streptococcus pneumoniae Baonella Campylobacter Viruses (Coxsackie virus, echovirus, influenza, varicella, HIV, EBV).