What is norovirus?
Often called the stomach flu, norovirus is highly contagious. It is the leading cause of foodborne illnesses in Minnesota and the most common cause of vomiting and diarrhea across the United States.
Symptoms of the virus include a low-grade fever, chills, headaches, muscle aches, diarrhea, vomiting, and stomach cramps. While symptoms typically subside within one to two days, the CDC warns that the virus can continue to spread for weeks, even after you start feeling better.
Outbreaks
The Minnesota Department of Health (MDH) has reported over 40 norovirus outbreaks in December, a number more than double the usual amount. Norovirus, often referred to as the “stomach flu,” is highly contagious.
Symptoms of norovirus include stomach cramps, diarrhea, and vomiting, with additional signs such as headaches, muscle pain, and a low-grade fever or chills. Noroviruses are the leading cause of short-term diarrhea and vomiting illnesses in the U.S., and they are the primary cause of foodborne illness outbreaks in Minnesota. On average, most people will experience a norovirus infection about five times in their lifetime.
“We want to ensure people are aware of this increase in norovirus outbreaks and are taking steps to prevent spreading illness to family and friends, especially ahead of holiday gatherings,” said Jessica Hancock-Allen, director of MDH’s infectious disease division.
Proper food handling and handwashing can prevent most norovirus outbreaks and illnesses. Health experts recommend the following measures to avoid contracting and spreading norovirus:
- Always wash your hands for 20 seconds with soap and water before cooking or eating, as well as after using the restroom or changing diapers. It’s important to note that most hand sanitizers do not kill norovirus.
- If you’ve experienced diarrhea or vomiting within the last three days, avoid preparing meals for others. Similarly, refrain from consuming food that someone else has been preparing.
- Clean and disinfect any surfaces that have come into contact with vomit or diarrhea using a household bleach solution.
- Make sure to cook oysters and other shellfish thoroughly before consuming them.
The illness typically resolves within a day or two without any lasting effects. To help prevent dehydration, individuals with norovirus symptoms should drink plenty of water. If you have any concerns or questions, contact your healthcare provider.
Establishments such as restaurants, schools, childcare centers, and long-term care facilities should adhere to outbreak prevention protocols and make sure to exclude employees and visitors who have diarrhea or vomiting.
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