Joe Biden has tested positive again for Covid-19, three days after announcing he was negative and resuming his in-person White House activities.
The US president’s doctor, Kevin O’Connor, said Biden’s case was an example of “rebound” positivity, which sometimes occurs in patients who have taken Pfizer’s Covid-19 antiviral drug.
“The president has experienced no re-emergence of symptoms and continues to feel quite well,” O’Connor said.
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