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Vaccines may require boosters as protection evolves
Fauci says vaccine protection may wane and boosters could be needed. The U.S. vaccination rate rises toward 70 percent with at least one dose, while daily cases and deaths fall. Research shows long lived plasma cells and memory B and T cells provide lasting defense though variants challenge immunity. Booster trials with original and updated vaccines proceed, with international use already testing third doses.
MENTIONED IN THIS ARTICLE
Anthony Fauci
U.S
Senate
Fauci
Centers For Disease Control and Prevention
Joe Biden
Johns Hopkins University
Ali Ellebedy
Washington University
St. Louis
Wherry
Europe
FDA
Peter Marks
Pfizer
South Africa
National Institutes of Health
United Arab Emirates