Respected user , Hi
Warm welcome to Healthcaremagic.com
I have evaluated your query thoroughly .
*  This is in relation with intestine infection .
*  Suggestions for  better  recovery
-  Allow him to take plenty of liquids preferably boiled water , coconut water
    lemon juice , home made juices , butter milk .
-  Soft , light diet with fresh curd .
-  Avoid oily , spicy , hot beverages , junk foods , dairy fat .
-  Continue current medications .
-  Antibiotic assistance with 
pediatrician if needed .
Always feel free to ask any further doubts .
Regards .