Noroviruses cause acute gastroenteritis (“stomach flu” or “winter vomiting disease”) - symptoms include nausea, vomiting, watery non-bloody diarrhea, stomach cramps, and low-grade fever. Although the illness is generally short-lived and self-limiting, deaths from dehydration have occurred, especially among the elderly and the very young.
Outbreaks of norovirus illness can be from contaminated food, but most often the virus is transmitted person-to-person by the fecal-oral OR vomit-oral routes. There is no vaccine for norovirus. These viruses are highly contagious, and can survive in the environment for a long time. However, guidelines have been developed to help stop outbreaks.
Some of the ways to reduce your risk of becoming ill with noroviruses include:
The Virginia Department of Health Norovirus Fact Sheet
The Virginia Department of Health Norovirus Prevention Guidance for Institutions/Facilities
The Centers for Disease Control and Prevention (CDC) – Norovirus Infection
Morbidity and Mortality Report (MMWR): Norwalk-Like Virus: Public Health Consequences and Outbreak Management
For specific questions regarding norovirus infections, or to report a possible outbreak, please contact your local health department.