What To Know About The FDA's Decision On Pfizer Booster Shots

Dr. Ashish Jha, dean of the School of Public Health at Brown University, talks with Rachel Maddow about the FDA's decision to recommend a Pfizer booster shot only for people who are vulnerable to Covid or over the age of 65. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc

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