Fungal and Parasitic Infections USMLE Step 1 Practice Question
A 26 year old man presents with foul smelling greasy diarrhea, bloating, and abdominal cramps for 1 week after returning from a backpacking trip where he drank water from mountain streams. He has no fever or blood in the stool. Which of the following organisms is the most likely cause of this illness?
Answer choices
- ACryptosporidium parvum
- BClostridioides difficile
- CGiardia lambliaCorrect answer
- DEntamoeba histolytica
- EVibrio cholerae
- FCampylobacter jejuni
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