M.S.
it is harsh and it can knock you down as long as a week. it is vomiting, fever, chills and the whole shebang!!! daughter jsut got over it and had to go to the ER because her fever was so high she almost fainted!!! keep an eye out for fever...if it gets to 102 or close to it bring him in to the hospital so he does not have the same probs my daughter did.