https://www.cnbc.com/2021/07/08/pfizer-says-it-is-developing-a-covid-booster-shot-to-target-the-highly-transmissible-delta-variant.html
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7/8/21 at 9:03pm
Organization
CNBC
Author
Berkeley Lovelace Jr.
31 words
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Clinical studies could begin as early as August, subject to regulatory approvals, Pfizer says.
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