This is a short video from the CDC highlighting the Norovirus. This virus is one of the leading causes for pediatrician visits related to diarrhea. It is also responsible for many outbreaks on cruise ships. This virus is easily transmitted and may lead to severe dehydration. The CDC states that alcohol based hand cleaner (Purell/Germex) are NOT effective against this virus. So, it is important to practice good hand hygiene with SOAP and WATER.