USMLE® Step 2 style questions USMLE
A 16-year-old man comes to the clinic because of 7 days of flatulence and greasy, foul-smelling diarrhea. He states he recently went camping and reports that his friend collected water from a stream, but did not boil or chemically treat the water before they consumed it. The patient also reports symptoms of nausea, weight loss, and abdominal cramps followed by sudden diarrhea. Which of the following is the most appropriate treatment option?