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July 9, 2021

Pfizer Tweaking Vaccine to Target Delta Coronavirus Variant, Will Seek Authorization for Third Shot
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Pfizer said Thursday it is tweaking its COVID-19 vaccine formula to
create a shot that targets the Delta variant. Pfizer is also planning to
request emergency authorization in the U.S. next month for a booster
shot of its vaccine, saying an early study showed a third dose raised
neutralizing antibody levels in patients. On Thursday, the Centers for
Disease Control and Prevention and the Food and Drug Administration
issued a rare joint statement saying they won't rely exclusively on drug
company data to make a decision on booster shots.


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