World’s biggest COVID-19 vaccine study begins, a US trial that will include 30,000 people to see if shots really work

By The Associated Press | Posted - Jul. 27, 2020 at 5:03 a.m.



WASHINGTON (AP) — World’s biggest COVID-19 vaccine study begins, a US trial that will include 30,000 people to see if shots really work.

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The Associated Press

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