U.S. President Joe Biden speaks in the State Dining Room of the White House in Washington, D.C., U.S., on Friday, Sept. 24, 2021. The U.S. will begin giving Covid-19 booster shots to millions of Americans today, a watershed moment in the nation's battle against the pandemic that officials hope will beat back another brutal winter wave of infections. <br /> Credit: Al Drago / Pool via CNP /MediaPunch
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