A 47-year old man with diabetes and hypertension travels with his family to Mexico. The next morning after eating out at local restaurant and despite drinking bottled water, he develops severe crampy abdominal pain and watery, frequent diarrhea.
Which of the following is the best approach for his care?
a) Penicillin x5 days.
b) Tetracycline x3 days.
c) Ciprofloxacin x3 days.
d) Metronidazole x10 days.
e) Observation of symptoms.
