US First Lady Jill Biden on Monday tested positive for Covid-19 while President Joe Biden tested negative, the White House said.

The 72-year-old first lady is experiencing "only mild symptoms," her office said and will remain in the couple's home in Rehoboth Beach, Delaware.

Jill Biden last tested positive for Covid a year ago.

President Biden, 80, was administered a Covid test Monday evening and tested negative, the White House said, adding that he will continue regular testing and monitor for symptoms.

The United States has been experiencing a rise in Covid cases and hospitalizations in recent weeks.