“The President continues to feel very well,” wrote Dr. Kevin O’Connor. “Given his recovery positivity that we reported last Saturday, we have continued daily monitoring. This morning, the SARS-CoV-2 antigen test was negative. Out of caution, the President will continue his strict isolation measures pending a second negative test as previously described’.
According to the US Centers for Disease Control and Prevention, “People with a recurrence of COVID-19 symptoms or a new positive virus test after testing negative should restart isolation and self-isolate again for at least 5 days.”
The CDC issued a health alert to doctors on May 24, advising that symptoms of Covid-19 sometimes recur and that the infection can still occur in some people, regardless of whether they have been vaccinated or treated with drugs such as Paxlovid. The CDC said most of the recoveries involve mild illness and there have been no reports of severe illness.
Biden is fully vaccinated and received two booster shots. He received the first two doses of the Pfizer/BioNTech Covid-19 vaccine before its launch in January 2021, his first booster in September and the second booster in March.
This story has been updated.