Pfizer and Moderna seek approval of 2nd booster shot

Name: Pfizer and Moderna seek approval of 2nd booster shot
Uploaded: 2022-03-18T21:56:45Z
Duration: 3 min 1 s
Description: Both companies asked the FDA to authorize a fourth dose of their respective COVID-19 vaccines as effectiveness begins to wane.

Both companies asked the FDA to authorize a fourth dose of their respective COVID-19 vaccines as effectiveness begins to wane.

Posted March 18, 2022 5:56pm EDT