Bacterial Infections USMLE Step 1 Practice Question
A 31 year old aid worker in a refugee camp develops abrupt onset of profuse watery diarrhea and vomiting. He is dizzy, tachycardic, and has poor skin turgor, but he has no fever and no blood in the stool. Stool is described as pale and flecked with mucus. Which of the following is the most likely causal organism?
Answer choices
- AGiardia lamblia
- BEnterotoxigenic Escherichia coli
- CShigella dysenteriae
- DVibrio choleraeCorrect answer
- ENorovirus
- FVibrio parahaemolyticus
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