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Dr. Fauci on the 'fog of war' in fighting disease, and the health threat of toxic politics
Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical advisor to President Biden, talks with Rachel Maddow on the day he announced his intention to retire at the end of the year, about the lessons he learned over his long career and the threat of toxic politics to public health.