Sen. Cory Gardner Cory Scott GardnerJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Gardner on court vacancy: Country needs to mourn Ginsburg 'before the politics begin' MORE (R-Colo.) said Tuesday that he will self-quarantine after coming into contact with a constituent who later tested positive for the coronavirus.

"While I am not showing any symptoms at this time, I have made the decision to self-quarantine out of an abundance of caution with an effective date of March 11 at the recommendation of the Tri-County Health Department," Gardner said in a statement.

Gardner noted that he was alerted on Tuesday by Tri-County Health Department "that a Coloradan who visited my Washington office for a constituent meeting has tested positive for coronavirus."

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Gardner is the latest senator to self-quarantine after coming into contact with an individual who tested positive for the coronavirus. Sens. Rick Scott (R-Fla.), Lindsey Graham Lindsey Olin GrahamMomentum growing among Republicans for Supreme Court vote before Election Day Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Warning signs flash for Lindsey Graham in South Carolina MORE (R-S.C.) and Ted Cruz Rafael (Ted) Edward CruzVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Democrat on Graham video urging people to 'use my words against me': 'Done' MORE (R-Texas) have also self-quarantined.

Garder was spotted earlier Tuesday in a gaggle with congressional reporters. He also attended a closed-door GOP policy lunch with Treasury Secretary Steven Mnuchin Steven Terner MnuchinLawmakers fear voter backlash over failure to reach COVID-19 relief deal United Airlines, unions call for six-month extension of government aid House Democrats plan to unveil bill next week to avert shutdown MORE.

Two congressional staffers — one in the House and one in the Senate — have tested positive for the virus; no lawmakers have tested positive.

But there are growing concerns about the spread of the coronavirus on Capitol Hill.

The House is on a one-week break and it's unclear when they will return.

Meanwhile, Senate Democrats have been having leadership and caucus meetings via teleconference, and Republicans have moved their in-person meetings to larger rooms to give members more space.