<prompt> An infant is brought to the emergency room with hemolytic uremic syndrome and thrombocytopenia. Stool sample was cultured and non-lactose fermenting colonies grown on Sorbitol MacConkey agar, which also fermented glucose with gas. Which one of the following bacteria would most likely be isolated from a stool specimen?ShigellaSalmonellaAeromonasE. coli O157H7  <response>: Ans. is d i.e., E. coli O157H7EHEC Enterohemorrhagic E. coliAerocytotoxin producing E coli - produces verotoxin VT whose major target is vascular endothelial cells - Hemolytic uremic syndrome HUS, Hemorrhagic colitis - . 