(WXYZ) — The Detroit Regional Chamber is warning attendees about a COVID-19 outbreak following the Mackinac Policy Conference last week on Mackinac Island.
According to a post on the chamber's Facebook page, 15 people who participated in the conference have tested positive for COVID-19.
That includes Transportation Secretary Pete Buttigieg, who announced Monday that he had tested positive for COVID-19.
Buttigieg, who is vaccinated, said he is experiencing mild symptoms.
"I plan to work remotely while isolating according to CDC guidelines, and look forward to when I can safely return to the office and the road," Buttigieg said.
According to the Detroit Regional Chamber's post, there were 1,347 attendees at the conference, and they had to submit proof of vaccination or a negative PCR test to attend. The chamber said 14 people took advantage of the test option.
Those who test positive are asked to notify the Chamber through a phone call or text at 313-550-7827.
Many huge names in the state and the country attended the conference, including U.S. representatives and senators, Gov. Gretchen Whitmer, Buttigieg, Tom Gores, CNN's Van Jones, Ted Koppel, Jon Meacham and more.
According to a spokesperson for Whitmer, the governor took a rapid test on Monday morning and came back negative.
"She is fully up to date on her vaccinations, and is not currently experiencing any symptoms. Governor Whitmer will continue to carry out her duties as governor. We wish Secretary Buttigieg and all others a speedy recovery," the spokesperson said.