<prompt> Most common cause of HUS in children is -E coli O157H7S typhiShigellaNone  <response>: Ans. is a i.e., E coli O157H7 o The majority of HUS in children 90 is related to prototypic diarrhea associated form, predominately in previously healthy children 6 months to 4 years of age with a peak between 1 and 2 years,o Shiga toxin producing E coli STEC is the major cause of diarrhea associated HUS.o Specifically, E coli with serotype Ol 57:H7 is the bacteria most commonly associated with HUS 90 and is the most virulent.o Other common bacteria implicated in causation of HUS are :Shigella dysenteriaeSalmonella typhaeCamphylobacter jejuniYersinia speciesPseudomonas speciesClostridium difficle 