An FDA advisory committee will meet today to discuss the safety and efficacy of Pfizer's booster vaccine. The move comes as debate heats up over who should receive a third dose to protect against the coronavirus, and when. Ed O'Keefe reports. Each weekday morning, "CBS Mornings” co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and 8 a.m. ET on CBSN. Subscribe to “CBS Mornings” on YouTube: / cbsmornings Watch CBSN live: http://cbsn.ws/1PlLpZ7c Download the CBS News app: http://cbsn.ws/1Xb1WC8 Follow "CBS Mornings" on Instagram: https://bit.ly/3A13OqA Like "CBS Mornings" on Facebook: https://bit.ly/3tpOx00 Follow "CBS Mornings" on Twitter: https://bit.ly/38QQp8B Subscribe to our newsletter: http://cbsn.ws/1RqHw7T Try Paramount+ free: https://bit.ly/2OiW1kZ For video licensing inquiries, contact: [email protected]