There was evidence as early as the last month of 2020 that people who had received COVID-19 vaccines could still get COVID-19, Dr. Deborah Birx said on June 23.
“We knew early on in January of 2021, in late December of 2020, that reinfection was occurring after natural infection,” Birx, the White House COVID-19 response coordinator during the Trump administration, said before a congressional panel.
