Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, explains to Rachel Maddow what aspects of Covid-19 immunity are being researched now to find out if vaccine booster shots will be necessary at some point in the future. » Subscribe to MSNBC:
About The Rachel Maddow Show: Through her unique approach to storytelling, Rachel Maddow provides in-depth reporting to illuminate the current state of political affairs and reveals the importance of transparency and accountability from our leaders. Maddow seeks to explain our complex world and deliver news in a way that's illuminating and dynamic, connecting the dots to make sense of complex issues. Maddow also conducts interviews with individuals at the center of current news stories to provide important perspective.
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