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In a wide ranging interview about his life after retiring as director of the National Institute of Allergy and Infectious Diseases, Anthony Fauci tells the BBC's Katty Kay that 96% of the US population has a degree of immunity against the most recent Covid variant but urges people to get a booster shot that will be released in September.
"There is enough fundamental community-level protection, it's not going to be the tsunami of cases that we've seen."