Infectious Diarrhea Testing Algorithm

Diarrhea may be infectious or noninfectious and presents with acute (lasting <14 days) or persistent (lasting >14 days) symptoms. In most patients, rehydration is a sufficient response to diarrhea. If testing is indicated based on symptoms, travel history, or patient status (eg, hospitalized or immunocompromised), an initial workup may include viral testing, a bacterial stool culture, a parasite panel, and/or Clostridioides difficile testing, depending on the clinical setting and any known exposures.

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