Former President Donald Trump praised the efficacy of the coronavirus vaccines in a new interview just days after being booed by an audience for revealing he received a Covid booster shot.

“The vaccine is one of the greatest achievements of mankind,” Trump told conservative commentator Candace Owens in an interview on Wednesday. While Trump has expressed opposition to vaccine mandates, he has long taken credit for the vaccines developed on his watch.

“I came up with a vaccine, with three vaccines all are very, very good,” he said in the interview, referring to the Pfizer, Moderna and Johnson & Johnson shots.

Trump also said people who are vaccinated aren’t the ones becoming seriously ill.

“The ones that get very sick and go to the hospital are the ones that don’t do the vaccine, but it’s still their choice,” he said. “And if you take the vaccine you’re protected, the results of the vaccine are good.”

On Sunday, Trump drew boos from an audience in Dallas after revealing to former Fox News host Bill O’Reilly that he got a Covid booster shot.