Approximately 1 in 3 Americans 65 and older who completed their initial vaccination round still have not received a first booster shot. The numbers dismay researchers, who say the lag has cost tens of thousands of lives.
Approximately 1 in 3 Americans 65 and older who completed their initial vaccination round still have not received a first booster shot. The numbers dismay researchers, who say the lag has cost tens of thousands of lives.
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