Around a third of people with Covid will experience a rebound of their symptoms, regardless of whether they’ve been treated with the antiviral Paxlovid, according to a study posted online Tuesday.

Scientists and federal agencies say they are investigating reports of Americans who say they faced a resurgence of COVID-19 soon after finishing off a course of Paxlovid, Pfizer's antiviral treatment ...

Some Americans who take Paxlovid, an antiviral for Covid-19, may see their symptoms rebound following a brief recovery, the Centers for Disease Control and Prevention said in an advisory on Tuesday.

COVID rebound is when COVID-19 symptoms return soon after they go away or a person registers a positive COVID-19 test result after testing negative for several days. COVID rebound can happen in people ...