"Morning Joe" co-host Joe Scarborough Charles (Joe) Joseph ScarboroughScarborough calls on Cuomo to walk back statement he made about Trump: 'Out of bounds' Mika Brzezinski: 'Super grossed out' by Trump speech attendees 'who put their lives at risk' Democrats tear into Trump's 'deep state' tweet: His 'lies and recklessness' have 'killed people' MORE slammed President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE for his sardonic response to Sen. Mitt Romney Willard (Mitt) Mitt RomneyGraham: GOP will confirm Trump's Supreme Court nominee before the election Gardner signals support for taking up Supreme Court nominee this year Grassley, Ernst pledge to 'evaluate' Trump's Supreme Court nominee MORE (R-Utah) testing negative for the coronavirus, noting that a positive test for the 73-year-old Romney "could have been a death sentence for him."

"This is really great news! I am so happy I can barely speak. He may have been a terrible presidential candidate and an even worse U.S. Senator, but he is a RINO, and I like him a lot!" Trump wrote of Romney to his more than 75 million followers.

This is really great news! I am so happy I can barely speak. He may have been a terrible presidential candidate and an even worse U.S. Senator, but he is a RINO, and I like him a lot! https://t.co/42zpWW9vzy — Donald J. Trump (@realDonaldTrump) March 25, 2020

“My god … Don’t you just ask yourself the question right now about his stability?” Scarborough's co-host and wife Mika Brzezinski Mika Emilie BrzezinskiMika Brzezinski: 'Super grossed out' by Trump speech attendees 'who put their lives at risk' Trump hurls insults at Harris, Ocasio-Cortez and other women Trump targets 'Complete psycho' Scarborough, 'ditzy airhead' Brzezinski while praising 'Fox & Friends' MORE said in response to the tweet on Wednesday's edition of the MSNBC morning program.

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“Well, of course, Mika. We do every day,” Scarborough replied. “Mitt Romney is of the age that this could have been a death sentence for him.”

Older people who contract the coronavirus are more likely to die from it than younger people, according to a report from the Centers for Disease Control and Prevention.

"Overall, 31 percent of cases, 45 percent of hospitalizations, 53 percent of ICU admissions, and 80 percent of deaths associated with COVID-19 were among adults aged 65 years or older with the highest percentage of severe outcomes among persons aged 85 or older," the report said.

Trump has swiped at Romney repeatedly in recent months, particularly after the Utah senator was the only lawmaker on the Republican side of the Senate to vote with Democrats to convict the president for abuse of power during the impeachment process earlier this year.