Four years late, and amid the second largest wave of COVID infections, where models based on wastewater data indicate that close to 100 million Americans have been infected since mid-October, the US ...
The latest versions of COVID-19 vaccines were 54% effective at preventing symptomatic infection in adults, according to the first U.S. study to assess how well the shots work. The shots became ...
NEW YORK (AP) — The latest versions of COVID-19 vaccines were 54 percent effective at preventing symptomatic infection in adults, according to the first U.S. study to assess how well the shots work.