Trump reveals he got COVID-19 booster shot; crowd boos him

“Both the president and I are vaxxed," O’Reilly said at the American Airlines Center, drawing some jeers from the audience, according to video shared online by O’Reilly’s “No Spin News.”

“Did you get the booster?” he asked the former president. “Yes," Trump responded. “I got it, too," O'Reilly said, eliciting more hectoring.

“Don't! Don't! Don't! Don't! Don't!” Trump told the crowd, waving off their reaction with his hand.

While Trump has expressed opposition to vaccine mandates, he has long taken credit for the vaccines developed on his watch. At the same time, he has refused to urge his supporters to take them, even though Republicans remain far less likely than Democrats to be protected.