AKT-0561

A 7-year-old child comes to the clinic after visiting a petting zoo about 2 weeks ago. The child complains of watery diarrhea, abdominal cramps, and a low-grade fever. The mother reports that the child is still able to eat and drink normally and is urinating normally. Upon examination, the child appears pale, and the abdomen is slightly tender but soft. What is the most probable diagnosis?