This information is useful for children, adults, and older adults
Why Yale Medicine?
  • We were one of the first clinics to implement precision testing to identify the different strains of norovirus.
  • Our physicians and staff receive specialized training on how to prevent additional spreading of the highly contagious norovirus.
  • We are a leader in the field of infectious diseases, which includes illnesses like norovirus.

Norovirus outbreaks have ruined the vacation of many on cruise ships. That's because this virus, which causes acute gastroenteritis, or inflammation of the stomach and intestines, spreads easily and quickly in confined spaces. Norovirus causes severe vomiting and diarrhea and is the most common cause of gastroenteritis in the United States, according to the Centers for Disease Control and Prevention. “It takes a very small amount of the virus to initiate an infection," says Marie-Louise Landry, MD, professor of laboratory medicine and of infectious disease at Yale School of Medicine. However, she adds, the good news is that most healthy people who become infected with the virus recover fully within 48 hours without any medical intervention.