New C.D.C. data adds to evidence that boosters’ protection against severe Covid plunges after four months.

https://www.nytimes.com/live/2022/02/11/world/covid-19-tests-cases-vaccine#new-cdc-data-adds-to-evidence-that-boosters-protection-against-severe-covid-plunges-after-four-months

Apoorva Mandavilli

New York Times

February 11, 2022