President Trump is now among world leaders, including British Prime Minister Boris Johnson, who have tested positive for the coronavirus.

British Prime Minister Boris Johnson, left, reaches out to shake hands with U.S. President Donald Trump at the official arrivals for a NATO leaders meeting at The Grove hotel and resort in Watford, Hertfordshire, England, Wednesday, Dec. 4, 2019. NATO Secretary-General Jens Stoltenberg rejected Wednesday French criticism that the military alliance is suffering from brain death, and insisted that the organization is adapting to modern challenges. (AP Photo/Francisco Seco)