Joe Biden to wear mask as Jill Biden tests positive for coronavirus

White House said that US President Joe Biden will wear a mask under a precautionary measure despite being tested negative for Covid-19 for the second time as mild infection was detected in First Lady Jill Biden earlier the day sparking uncertainty over the commander-in-cheif's travel schedule.

Press Secretary Karine Jean-Pierre told reporters that "Joe Biden also tested negative during a check-up on Monday and is not experiencing any symptoms."

However, she said, because the 80-year-old was with his wife on Monday he will be masking while indoors and around people in alignment with government health guidance.

"The president will remove his mask when sufficiently distanced from others indoors and while outside as well."

Jean-Pierre did not provide further details on the Democrat presidential hopeful's masking plans for the G20 summit in New Delhi later this week or for alternative arrangements in case he tests positive for Covid ahead of or during the foreign trip.

"The president certainly is going to test on a regular cadence," the White House secretary said.

Jill Biden is experiencing "only mild symptoms," according to her office, and will remain at the couple's private home in Rehoboth Beach, Delaware. The 72-year-old last tested positive for Covid a year ago.

As President Biden is making preparations for his second bidding for the Oval Office in 2024, concerns about his age have emerged as a prominent issue among voters. 

Joe Biden is the oldest president to seek a second term, but his supporters maintain that he remains fit to serve in the White House.

The positive diagnosis for Jill Biden comes as the nation grapples with the ongoing challenges posed by the pandemic, underscoring the importance of continued vigilance and precautions in the face of the virus.

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