Some 6.8% of American adults are currently experiencing long Covid symptoms, according to a new survey from the US Centers for Disease Control and Prevention (CDC), revealing an “alarming” increase in recent months even as the health agency relaxes Covid isolation recommendations, experts say.

That means an estimated 17.6 million Americans could now be living with long Covid.

“This should be setting off alarms for many people,” said David Putrino, the Nash Family Director of the Cohen Center for Recovery From Complex Chronic Illness at Mount Sinai. “We’re really starting to see issues emerging faster than I expected.”