Current and former NBA players on Friday morning reacted to the news President Trump and first lady Melania Trump contracted the coronavirus, with some reminding their followers to wear a mask.

Portland Trail Blazers guard C.J. McCollum and Brooklyn Nets guard Jamal Crawford were among those who immediately reacted to Trump’s revelation.

PRESIDENT TRUMP, FIRST LADY TEST POSITIVE FOR CORONAVIRUS, SET TO QUARANTINE AT WHITE HOUSE

Trump made the announcement in a tweet.

“Tonight, @FLOTUS and I tested positive for COVID-19. We will begin our quarantine and recovery process immediately. We will get through this TOGETHER!” he wrote.

A White House source told Fox News shortly after the president’s tweet that he and the first lady are “fine” and are in the quarantine process at the White House.

LIVE UPDATES: PRESIDENT TRUMP, FIRST LADY TEST POSITIVE FOR CORONAVIRUS

Melania Trump also tweeted, "As too many Americans have done this year, @POTUS & I are quarantining at home after testing positive for COVID-19. We are feeling good & I have postponed all upcoming engagements. Please be sure you are staying safe & we will all get through this together."

Dr. Sean P. Conley, the president’s physician, also confirmed Trump and the first lady’s positive COVID-19 tests.

“This evening I received confirmation that both President Trump and First Lady Melania Trump have tested positive for the SARS-coV-2- virus,” Conley said. “The President and First Lady are both well at this time, and they plan to remain at home within the White House during their convalescence.”

“The White House medical team and I will maintain a vigilant watch, and I appreciate the support provided by some of our country’s greatest medical professionals and institutions,” he continued.

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He added: “Rest assured I expected the President to continue carrying out his duties without disruption while recovering, and I will keep you updated on any future developments.”

Fox News’ Brooke Singman contributed to this report.