Daycare workers are susceptible to giardiasis, with symptoms including bloating, flatulence, and foul-smelling stools. This can be treated with metronidazole. Patients may have mild, diffuse abdominal tenderness and increased bowel sounds on an exam.
“Travelers to less developed countries often develop travelers’ diarrhea from ingesting contaminated food or water. This is most often due to enterotoxigenic Escherichia coli, although travelers can also have Norovirus infections. The most appropriate antibiotic choice in this situation is ciprofloxacin.
Patients who become ill after an event where food is served and several attendees have similar symptoms should be suspected of having a Campylobacter infection if the symptoms include bloody diarrhea. This should also be treated with ciprofloxacin.” ABFM
Reference
Acute diarrhea. Am Fam Physician 2014;89(3):180-189.