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Microbiology Bacteria 78de7629

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?

A
Shigella
B
Salmonella
C
Aeromonas
D
E. coli O157/H7
High-Yield Explanation
Ans. is 'd' i.e., E. coli O157/H7EHEC (Enterohemorrhagic E. coliA/erocytotoxin producing E coli) - produces verotoxin (VT) whose major target is vascular endothelial cells - Hemolytic uremic syndrome (HUS), Hemorrhagic colitis - .

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