Pfizer Begins Testing a COVID Vaccine Targeted to Omicron
TUESDAY, Jan. 25, 2022 (HealthDay News) -- Pfizer Inc. announced Tuesday that it has launched a trial that will compare its existing COVID-19 vaccine against a new version tailored…
TUESDAY, Jan. 25, 2022 (HealthDay News) -- Pfizer Inc. announced Tuesday that it has launched a trial that will compare its existing COVID-19 vaccine against a new version tailored…