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Public Health

U.S. health officials are watching two key factors to determine if and when Americans will need COVID-19 vaccine boosters, Anthony Fauci, MD, director of the National Institute of Allergy and Infectious Diseases, said during a June 17 White House briefing. 

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The nation's COVID-19 death toll surpassed 600,000 June 15, according to data from Baltimore-based Johns Hopkins University. 

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