This is the third bout of COVID for the 81-year-old.
Biden tested for COVID after a campaign event in Las Vegas.
He is already taking the antiviral medicationPaxlovidand will self-isolate in Delaware.

Mario Tama / Getty Images
The White House physician said Bidens symptoms remain mild.
The news comes as the U.S. experiences a summer uptick in COVID cases.
Omicron subvariants are very contagious and are spreading rather widely, creating a fair amount of relatively mild infection.
As adults age, they are more likely to develop multiple comorbidities like these.
The White House said Biden is up-to-date on his vaccines and got his most recent shot in September.
Vaccination can protect against serious illness and help prevent long-term complications.
Protecting Against Long COVID
Even a mild COVID infection can cause long-lasting effects.
After an acute illness subsides, the virus can cause lingering problems throughout the body.
The next round of updated COVID-19 vaccines is expected to roll out in the fal.
They are being updated to protect against the current circulating COVID variants.
“Take out your mask and use it again.
I would recommend an N95 or K95 mask.”
For the most recent updates on COVID-19, visit ourcoronavirus news page.
Centers for Disease Control and Prevention.Current epidemic growth status (based onRt) for states and territories.
Centers for Disease Control and Prevention.COVID data tracker.
National Institutes of Health.Long COVID.
Published online July 17, 2024. doi:10.1056/NEJMoa2403211