US president Joe Biden tests positive for Covid-19 again

President Joe Biden (Susan Walsh/AP)

US president Joe Biden tested positive for Covid-19 again on Saturday, slightly more than three days after he was cleared to leave coronavirus isolation, the White House said, in a rare case of “rebound” following treatment with an anti-viral drug.

White House physician Dr Kevin O’Connor said in a letter that Mr Biden “has experienced no re-emergence of symptoms, and continues to feel quite well”.