“I am closing my office in Washington, D.C. for the week and my team will follow the previously approved Tele-commute plan," said Gosar in a written statement.
The infected person who attended CPAC - who has not yet been identified - also had contact with Matt Schlapp, who introduced President Donald Trump for his speech to the group.
It wasn't immediately clear how many other people may have been in contact with that person - as the CPAC gathering was attended by a number of GOP lawmakers, conservative media, Trump Administration officials, and others involved in Republican politics.
Reports have indicated the person does not live in Washington, but instead is from New Jersey.
"The Maryland Department if Health has responded to our Gaylord Hotel corona situation w speed and skill," said Matt Schlapp, the head of CPAC, who also interacted with the person who has the Coronavirus.
"I have consistently said that I had incidental contact w this attendee but have no symptoms," Schlapp tweeted on Sunday. "We have Zero new cases."