The Minnesota Department of Health has received more than 40 reports of norovirus outbreaks so far this December, almost twice the usual number.

The department defines an outbreak as an incident in which two or more persons experience a similar illness after a common exposure.

The norovirus, often called the stomach flu, causes vomiting, diarrhea and stomach cramping.

According to a news release from the Department of Health, noroviruses are very contagious and are the leading cause of foodborne illness outbreaks in Minnesota. Most people get norovirus around five times in their life.

“Particularly ahead of holiday gatherings, we want to make sure people are aware of this increase in norovirus outbreaks and taking steps to prevent spreading illness to family or friends,” said Jessica Hancock-Allen, infectious disease division director with the Department of Health.

To avoid getting and spreading the virus, the Department of Health recommends that individuals wash their hands with soap and water, as most hand sanitizers do not kill norovirus. Other mitigating steps include cleaning and disinfecting surfaces, cooking shellfish before eating it, and not preparing food for others if you have been sick within the last three days.

When infected with a norovirus, the illness tends to go away after one or two days with no long-term health effects. While sick, individuals should drink plenty of fluids to help avoid becoming dehydrated.

For more information on the norovirus — and for procedures for businesses, schools and long-term care facilities — visit the Department of Health’s website.

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