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A booster shot, on the other hand, is an additional dose needed after the protection of the initial dose or doses has lessened over time, according to experts.
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What’s the difference between a 3rd vaccine shot and a booster shot?
What’s the difference between a 3rd vaccine shot and a booster shot?
After the CDC approved booster shots of the Pfizer vaccine for certain groups, experts outline the difference between a booster and a third shot of the vaccine.
news.yahoo.com
Scott Stump
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