Yes, viral gastroenteritis is going around. You should keep pushing the fluids to prevent dehydration. The child on amoxicillin is just having a normal reaction to antibiotics. Diarrhea is a side effect of all antibiotics, not all people respond the same and diarrhea can be worse in some people. Just keep desitin or whatever diaper cream you prefer on their bottoms to prevent excoriation of the skin from the diarrhea. Also feed them bananas, rice, applesauce, and toast if they have been vomiting. Antibiotics do not help w/viral infections, however they will be needed for the ear infection. Hope this was helpful for you.
K., emergency room RN