Rep. Paul Gosar announced Sunday that he and several members of his staff had “sustained contact” with a person who has tested positive for the new coronavirus, and was putting himself and those staffers into self-quarantine.

The exposure happened at the annual Conservative Political Action Conference in the Washington area, Gosar, R-Ariz., said in a statement.

“I am not currently experiencing any symptoms, nor is any member of my staff,” Gosar said. “However, to prevent any potential transmission, I will remain at my home in Arizona until the conclusion of the 14-day period following my interaction with this individual.”

Gosar said “out of an abundance of caution,” he was also closing his Washington, D.C., office for the coming week as well.

Gosar praised President Donald Trump and Vice President Mike Pence for assembling “an incredible team” that is dealing with the widening virus. He said he has been in contact with the House’s attending physician.

Gosar, who is in his fifth term in Congress and represents a district that spans northwestern Arizona, could not be reached for comment Sunday to elaborate on his potential exposure or other details.

The CPAC events ran from Feb. 26 through Feb. 29 in Fort Washington, Md. The annual conference is one of the most high-profile affairs for conservatives all year, and draws GOP luminaries of all stripes.

The infection of a CPAC attendee brings the global health scare directly to the doors of the White House and many of the nation’s top conservatives.

Gosar is at least the second member of Congress to self-quarantine due to potential exposure to the virus. Sen. Ted Cruz, R-Tex., also said Sunday that he was staying home in Texas until two weeks have passed since he shook hands with the infected person, whose identity remains undisclosed.

Trump was photographed shaking hands at the conference with Matt Schlepp, chairman of the American Conservative Union, who has said he had direct contact with the infected man.

The White House has said Trump is symptom-free and had no direct exposure to the infected person, the Washington Post reported Sunday.

Even so, the indirect meeting is an uncomfortable reminder of how far and wide the coronavirus is traveling. Trump held a dinner on Saturday in Florida with Brazil President Jair Bolsonaro.

The U.S. has reported at least 500 confirmed cases of the virus, with at least 21 fatalities so far. Health experts expect the numbers to jump significantly in the days ahead.