I just asked as my own daughter threw up 3x this year while getting ready for the bus. Each time she had a touch of a cold and was coughing and that caused her to throw up. Weeks apart. I kept her home each time and she truly was 100% fine. Now when she has a cough I give her less breakfast as a full belly and cough just doesnt work for her!

So there are cases where it is not illness related. It is your call. But I suspect I would attempt to keep the child next time if no other symptoms and if all other children are symptom free. If any child has a stomach bug or illness then I would have to play it safe assuming he has what they have.

Kids are very weird. While we do need to follow the sick policy there are times when common sense might over rule it (at YOUR descretion-no one elses).