NEW YORK – The U.S government’s first look at the real-world use of COVID-19 vaccines found their effectiveness was nearly as robust as it was in controlled studies.
The two vaccines available since December — Pfizer and Moderna — were 90% effective after two doses, the Centers for Disease Control and Prevention reported Monday.
In testing, the vaccines were about 95% effective in preventing COVID-19. “This is very reassuring news,” said the CDC’s Mark Thompson, the study’s lead author. “We have a vaccine that’s working very well.” The study is the government’s first assessment of how the shots have been working beyond the drugmakers' initial experiments.