If you celebrated Fourth of July at Torch Lake in Antrim County, you may have been exposed to COVID-19.
The health department reported multiple people who partied there, now have the coronavirus.
Health officials said you should self-monitor for potential Covid-19 symptoms.
If you develop shortness of breath, cough or fever, you should get tested.
Health experts also recommend you get tested if you were not wearing a face mask at the event.