(WXYZ) - The Michigan Department of Community Health has confirmed that more than 200 participants in the Tough Mudder obstacle course event became ill with norovirus. Others with symptoms are being urged to stay home to prevent its spread.
Multiple runners who participated in the Tough Mudder at the Michigan International Speedway last weekend fell ill and reported their symptoms to county or state health departments.
The Tough Mudder is a 10-12 mile obstacle course designed to test people's endurance.
Earlier this week, the Michigan Department of Community Health confirmed multiple cases of a gastrointestinal illness among participants, but did not confirm what the illness was.
Lab work now confirms an outbreak of norovirus among participants. By July 1, the state says more than 200 had reported health problems after the competition. Sickness was reported among both runners and spectators.
According to the Department of Community Health, "Symptoms of norovirus infection include nausea, vomiting, diarrhea, and abdominal cramps. In addition, people may experience a low-grade fever, chills, headache, muscle aches, and fatigue. In most people, the illness is self-limiting with symptoms lasting for one to two days."
Anyone who participated in Tough Mudder and has these symptoms is urged to, "Stay home for at least 48-72 hours after their symptoms resolve."
The state also says, "Ill persons should not prepare for or share food or drinks with others. Soiled clothing and linens should be washed immediately on the highest temperature setting."
Norovirus outbreaks can be fairly common and there is no specific medicine that is used to treat it. If you have norovirus symptoms, you should drink plenty of fluids and see a doctor.