Bacterial Infections USMLE Step 1 Practice Question
A 4 year old boy from a crowded daycare center is brought in with fever, abdominal pain, and frequent small volume stools mixed with blood and mucus. His mother says he had a generalized seizure earlier in the day. Stool microscopy shows numerous neutrophils. Which of the following is the most likely causal organism?
Answer choices
- AEnterohemorrhagic Escherichia coli
- BShigella dysenteriaeCorrect answer
- CVibrio cholerae
- DYersinia enterocolitica
- ESalmonella typhi
- FRotavirus gastroenteritis
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