MRCP2-2901

A 35-year-old man presents to the Emergency Department with complaints of abdominal bloating, diarrhea, and foul-smelling flatulence. He recently returned from a business trip to Mexico where he indulged in local street food. His wife, who did not accompany him on the trip, is not experiencing any symptoms. On examination, his abdomen is distended with active bowel sounds. Laboratory investigations reveal a slightly elevated WBC count and a CRP level of 90 mg/l. What is the most effective intervention for this patient?