Biden tests negative for Covid but will isolate until second negative test

President Joe Biden tested negative for Covid on Saturday but will continue to isolate at the White House until a second negative test, his doctor said.

Biden, 79, came down with the virus a second time three days after he had emerged from isolation from his initial bout with Covid, reported on 21 July. There have been rare rebound cases documented among a small minority of those, who like Biden, were prescribed the anti-viral medication Paxlovid, which has been proved to reduce the risk of serious illness and death from the virus among those at highest risk.

Regulators are still studying the prevalence and virulence of rebound cases, but the Centers for Disease Control and Prevention in May warned doctors that it has been reported to occur within two days to eight days after initially testing negative for the virus.