Pfizer Inc March 16, 2022 11:39 am Pfizer Requests FDA Authorization for 2nd Booster in Seniors Pfizer asked the FDA Tuesday to authorize a second booster dose of its COVID-19 vaccine for Americans ages 65 and over. US & World Videos 1:39 Lawrence police cracking down on illegal dirt bikes 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up 2:30 Putting an increase in COVID cases into context 1:41 COVID cluster prompts masking at Beth Israel Deaconess Medical Center 0:50 COVID cluster at hospital prompts return of mask requirement in affected unit