It is a great irony, given that he has contracted the virus, and his wife, Jill Biden, tested positive for it for the second time on Monday. Both of them are vaccinated and boosted.

"This evening, the First Lady tested positive for COVID-19," the first lady's communications director, Elizabeth Alexander, said in a statement on Monday, adding that Jill Biden is "currently experiencing only mild symptoms" and staying at her home in Rehoboth Beach, Delaware.

This marks the second time the first lady has tested positive for the virus, despite the fact that she is double vaccinated and twice boosted. She also tested positive for the virus in August 2022.

President Biden, who has also tested positive for the virus in the past, tested negative on Monday.

"Following the First Lady's positive test for COVID-19, President Biden was administered a COVID test this evening," White House Press Secretary Karine Jean-Pierre said in a statement. "The President tested negative. The President will test at a regular cadence this week and monitor for symptoms."

The positive test for his wife comes after years of making false claims about coronavirus vaccines and their abilities.

During a CNN town hall event in July 2021, for example, Biden made the claim that "you're not going to get COVID if you have these vaccinations."

He said:

But again, one last thing. I — we don't talk enough to you about this, I don't think. One last thing that's really important is: We're not in a position where we think that any virus — including the Delta virus, which is much more transmissible and more deadly in terms of non — unvaccinated people — the vi- — the various shots that people are getting now cover that. They're — you're okay. You're not going to — you're not going to get COVID if you have these vaccinations.