Were you looking for information about Norovirus? Noravirus is a common misspelling of norovirus.
Norovirus infections can cause viral gastroenteritis, food poisoning, and other illnesses. This virus is highly contagious and is relatively resistant to environmental challenge, meaning it can survive both extremely cold and hot weather. Noroviruses are found in the stool or vomit of infected people and can be transmitted through touching objects or surfaces, eating foods, or drinking liquids that are contaminated with the virus. People infected with norovirus are usually contagious from the moment they begin feeling ill to at least three days after recovery.
(Click Norovirus for more information about this type of virus, including how it got its name, how it is transmitted, and what other illnesses it can cause.)