The host of The Tonight Show shared a photo of himself in an isolation room on Instagram on Tuesday (Jan 4), saying that he tested positive "on the first day of the holiday break".
"I was vaccinated and boostered which made me lucky enough to only have mild symptoms," added Fallon, 47.
He also thanked "doctors and nurses who work so hard around the clock to get everyone vaxxed".
Fallon's late night talk show last aired on Dec 17 last year before the holiday break, with actress Reese Witherspoon among the guest stars. It returned to television screens on Monday (Jan 3), with Fallon hosting it as usual. - The Straits Times/Asia News Network