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Pfizer-BioNTech begin global study of lead COVID-19 vaccine candidate

July 27 (Reuters) - German biotech BioNTech and U.S. drugmaker Pfizer Inc said on Monday they would begin a global study to evaluate their lead COVID-19 vaccine candidate.

The mid-stage study is expected to include about 120 sites globally. (Reporting by Vishwadha Chander in Bengaluru; Editing by Maju Samuel)

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