Who is leading the COVID-19 vaccine race?

Updated November 23 2020 - 8:24pm, first published 8:19pm
Pfizer, Moderna and Astra-Zeneca are moving toward seeking regulatory approval for their vaccines.
Pfizer, Moderna and Astra-Zeneca are moving toward seeking regulatory approval for their vaccines.

Drugmakers and research centres around the world are working on COVID-19 vaccines, with large global trials of several candidates involving tens of thousands of participants.

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