By WCCO-TV Staff

MINNEAPOLIS (WCCO) — Five out of 12 California residents who attended a Wisconsin wedding in Milwaukee County have been infected with the Omicron variant.

The Wisconsin Department of Health Services and the City of Milwaukee Health Department are investing a COVID-19 outbreak from a wedding on Nov. 27.

READ MORE: Minnesota Weather: Sunday Snow To Create Monday Commute Headaches

According to the release, there are 12 confirmed cases among the California residents who attended the event. One of the individuals attended the wedding upon return from international travel.

A California State lab identified that five of the 12 people diagnosed with COVID-19, were infected with the Omicron variant. The individuals are between the ages of 18-49.

READ MORE: 'You Are Not Alone': Domestic Violence Interventionists Highlight Resources After Women Murdered In St. Paul

All individuals were vaccinated, and most had received boosters, said the release.

“Although the news that this variant is continuing to spread throughout the country is concerning, it should not be a cause for panic. We know COVID-19 vaccines are effective at preventing serious illness and death,” said DHS Secretary-designee Karen Timberlake. “That’s why it’s critical that all eligible Wisconsinites get vaccinated or get their booster as soon as possible and follow public health best practices to keep ourselves and our loved ones safe.”

The DHS said they will continue to provide updates as more information becomes available.

MORE NEWS: Humanitarian Group Creating Homes, 'Sense Of Relief' For Afghan Refugees Heading To Minnesota