Rotavirus is a virus that young children often get. It is an intestinal condition that causes diarrhea and upset stomach. A common danger with rotavirus is dehydration, so children should drink plenty of fluids. Symptoms include diarrhea, vomiting, and fever. Treatments include keeping the child comfortable and hydrated through the duration of the virus. The rotavirus vaccine helps prevent the virus -- shots are usually given in 2-3 doses. Follow the links below to find WebMD's comprehensive coverage about how rotavirus is contracted, what it looks like, how to treat it, and much more.