(KPAX) Montana U.S. House candidate Kathleen Williams and members of her campaign staff are self-quarantining after learning an attendee at a campaign event tested positive for COVID-19.

Williams' campaign manager, Jeff Allen, said in a Thursday news release that neither the Bozeman Democrat nor her campaign staff have experienced symptoms and are self-quarantining "out of an abundance of caution."

Williams suspended all in-person campaign events on March 13 on the recommendation of the CDC and local public-health agencies. Campaign staff are working remotely.

"I continue to encourage everyone to follow public health experts’ guidance, and want to thank our health professionals who work tirelessly to protect the public. I hope that those impacted by this virus across Montana and the country recover safely and quickly. As we work through this tough time, please join me in reaching out to those in need or who are feeling isolated. We are all in this together,” Williams said in a statement.

Montana has 90 reported cases of COVID-19 , the disease caused by the coronavirus, as of Wednesday afternoon. One person has died , and seven have been hospitalized statewide.

Williams is facing state Rep. Tom Winter of the Missoula in the June 2 primary.

Six Republicans are competing for the GOP nomination for U.S. House: Secretary of State Corey Stapleton, Helena farmer-rancher Joe Dooling, John Evankovich of Butte, former state GOP Chair Debra Lamm of Livingston, retired National Guard officer Mark McGinley of Dillon and state Auditor Matt Rosendale.