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Easyinfrequent stools shortly after non-high-risk antibiotic are low probability; defer testing. Empiric therapy or imaging is unwarranted (DClostridioides difficile Infection"infectious diseases"

A 37-year-old with watery diarrhea requests PCR testing for C. difficile after completing azithromycin yesterday for sinusitis. Afebrile, no abdominal pain; stool frequency is 2/day. Best next step?

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