Members of the House GOP leadership team are self-quarantining after two lawmakers announced that they have tested positive for the coronavirus.

Top members of the minority whip team — including Whip Steve Scalise Stephen (Steve) Joseph ScaliseHouse GOP slated to unveil agenda ahead of election House panel details 'serious' concerns around Florida, Georgia, Texas, Wisconsin elections Scalise hit with ethics complaint over doctored Barkan video MORE (La.) and Rep. Drew Ferguson Anderson (Drew) Drew FergusonThe Hill's Coronavirus Report: Fauci says focus should be on pausing reopenings rather than reverting to shutdowns; WHO director pleads for international unity in pandemic response Trump campaign launches new fundraising program with House Republicans Top Georgia Republican endorses Doug Collins Senate bid MORE (Ga.), the chief deputy whip — are among the growing number of GOP lawmakers who have chosen to take precautions after Rep. Mario Diaz-Balart Mario Rafael Diaz-Balart'Trump show' convention sparks little interest on K Street Rep. Dan Meuser tests positive for COVID-19 Watchdog calls for probe into Gohmert 'disregarding public health guidance' on COVID-19 MORE (R-Fla.) announced Wednesday that he tested positive for the virus.

Diaz-Balart, a member of the Whip team and a senior member of the House Appropriations Committee, is known for being social around Capitol Hill, often seen shaking hands or hugging colleagues.

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In addition to partaking in House votes, Diaz-Balart also participated in a Friday meeting with Scalise and some core members of the whip team, prompting other participants to self-quarantine.

“I have just been informed that my colleague, Mario Diaz-Balart, tested positive for COVID-19. Since I had an extended meeting with him late last week, out of an abundance of caution, I have decided it would be best to self-quarantine based on the guidance of the Attending Physician of the United States Congress,” Scalise wrote in a press release, while noting that he is not experiencing any symptoms.

Other members of the whip team offered similar statements.

The gathering that Diaz-Balart attended was not a full whip meeting, and a Republican aide said that only a small margin of team members are self-quarantining.

Reps. Tom Cole Thomas (Tom) Jeffrey ColeBottom line House approves .3 trillion spending package for 2021 Multiple lawmakers self-quarantine after exposure to Gohmert MORE (R-Okla.) and Ann Wagner Ann Louise WagnerHouse Suburban Caucus advances congressional pandemic response DCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program Hispanic Caucus campaign arm endorses slate of non-Hispanic candidates MORE (R-Mo.), members of the team, and Rep. David Price David Eugene PriceHouse panel approves measure requiring masks on public transport Overnight Energy: 350 facilities skip reporting water pollution | Panel votes to block Trump's 'secret science' rule | Court upholds regulation boosting electric grid storage Committee votes to block Trump's 'secret science' EPA rule MORE (D-N.C.), also a member of the Appropriations panel, all announced that they would be self-quarantining in light of the news about two their colleagues testing positive.

The announcements mark a new wave of lawmakers buckling down for a two-week self-quarantine period, set to last until March 27. The first wave came after news broke that an attendee at the Conservative Political Action Conference (CPAC) had tested positive for the virus, prompting House Republicans including Reps. Mark Meadows Mark Randall MeadowsTrump reacts to Ginsburg's death: 'An amazing woman who led an amazing life' Trump carries on with rally, unaware of Ginsburg's death United Airlines, unions call for six-month extension of government aid MORE (N.C.) and Doug Collins Douglas (Doug) Allen CollinsVulnerable GOP incumbents embrace filling Supreme Court seat this year Georgia GOP Senate candidates cite abortion in pushing Ginsburg replacement Win by QAnon believer creates new headaches for House GOP MORE (Ga.), who attended the conference, to self-quarantine.

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But Wednesday marked a new reality for the nation’s lawmakers as the first two members announced on the same day that they had tested positive: Diaz-Balart and Rep. Ben McAdams (D-Utah).

Diaz-Balart said he first felt symptoms developing on Saturday evening, including a headache and fever.

The day before, he was on the House floor voting with his colleagues late at night after the House and Trump administration went back and forth in their negotiations over legislation responding to the coronavirus pandemic.

The Florida Republican has issued a statement stating that he is “feeling much better,” while stressing the seriousness of following Centers for Disease Control and Prevention (CDC) guidelines for avoiding catching or spreading the disease.

McAdams, a member of the centrist Blue Dog Coalition, also announced Wednesday that his symptoms had begun over the weekend.

“On Saturday evening, after returning from Washington, D.C., I developed mild cold-like symptoms,” McAdams wrote in a statement. He added that he went into self-isolation but his “symptoms got worse.”

“I developed a fever, a dry cough, and labored breathing and I remained self-quarantined,” McAdams said.

Other Blue Dog members have since announced that they are self-quarantining.

“Last Friday, I was in contact with a fellow Member of Congress who has tested positive for COVID-19. On the advice of the Attending Physician of the U.S. Congress and out of an abundance of caution, I will be self-quarantining until Friday, March 27, 2020,” Rep. Stephanie Murphy Stephanie MurphyDemocrats scramble on COVID-19 relief amid division, Trump surprise Bank lobbying group launches ad backing Collins reelection bid House Democrats call on State Department for information on Uighur prisoner Ekpar Asat MORE (D-Fla.) said in a statement late Wednesday.

My statement on self-quarantine: pic.twitter.com/Sbwo4rpA2d — Rep. Stephanie Murphy (@RepStephMurphy) March 19, 2020

The domino effect of the self-quarantine announcements are likely in part due to vigorous efforts of the House physician’s office, which has worked to determine with whom the infected members have been in contact before their symptoms began to develop.

The infections of two House members sent shockwaves of anxiety through Capitol Hill, adding further pressure to take precautions.

One day after the announcements, House Majority Leader Steny Hoyer Steny Hamilton HoyerHouse Democrats postpone vote on marijuana decriminalization bill Democrats scramble on COVID-19 relief amid division, Trump surprise The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Md.) revealed that the lower chamber was moving to adjust voting procedures in order to help prevent the further spread of the coronavirus.

“I share the concerns of many Members regarding the number of Members on the House Floor at any one time. I therefore expect that the House will adjust our voting procedures in order to follow the CDC’s recommendations,” Hoyer said in a statement Thursday, adding that they have not fully decided what those changes will be just yet.

Hoyer noted that he does not intend to bring the House back into session until members are called to vote on the third piece of legislation aimed to respond to the economic impact of the pandemic, which was introduced in the Senate Thursday evening by Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.).

There are growing calls for leaders in the House and Senate to change chamber rules and allow remote voting amid the outbreak, though that idea has been met with some resistance.

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“In. Person. Voting. Should. Be. Reconsidered,” tweeted freshman Rep. Debbie Mucarsel-Powell Debbie Mucarsel-PowellHispanic Caucus members embark on 'virtual bus tour' with Biden campaign Florida Democrat introduces bill to recognize Puerto Rico statehood referendum Mucarsel-Powell, Giménez to battle for Florida swing district MORE (D-Fla.) on Wednesday night. “For the safety of our communities, during this emergency, we must be able to legislate from our districts.”

As of Thursday, there were at least 10,822 people in the U.S. with coronavirus, spanning all 50 states as well as Washington, D.C., and three U.S. territories, according to a New York Times database of the pandemic.

The coronavirus is more dangerous to individuals with medical preconditions and older people. And about a third of Congress falls into the age group that is more vulnerable, with the average age of House members at 58 and the average age of senators at 63.

Changes on Capitol Hill began to take place as the virus to spread from coast to coast in order to protect members, staff, reporters and other Capitol Hill employees.

New restrictions were put into place last week, including prohibiting tours — both public and member- or staff-led — until April. Members of the public were blocked from entering the Capitol and its office buildings unless they were on official business. And reporters, if they still chose to go to Capitol Hill, began implementing the social-distancing recommendations this week of standing six feet apart from lawmakers and other political figures.

Such precautions remain in use as the Senate works this week to pass the third phase of a massive stimulus package to prevent the economy from plummeting into a recession amid the outbreak.

—Juliegrace Brufke contributed.