WASHINGTON — The Biden administration plans to offer the next generation of coronavirus booster shots to Americans 12 and older soon after Labor Day, a campaign that federal officials hope will reduce deaths from Covid-19 and protect against an expected winter surge.
Dr. Peter Marks, the top vaccine regulator for the Food and Drug Administration, said in an interview on Tuesday that while he could not discuss timing, his team was close to authorizing updated doses that would target the versions of the virus now circulating.
Even though those formulations have not been tested in humans, he said, the agency has “extremely good” data showing that the shots are safe and will be effective. “How confident am I?” he said. “I’m extremely confident.”