Jill Biden tests positive for Covid-19 again

First lady Jill Biden (Mariam Zuhaib/AP)

US first lady Jill Biden has tested positive for Covid-19 again in an apparent “rebound” case, after she initially tested negative for the virus over the weekend.

President Joe Biden, who spent three days with his wife at their holiday home in Rehoboth Beach, Delaware, continues to test negative, the White House said.