The sprint to create a COVID-19 vaccine started in January. The finish line awaits. – USA TODAY

The sprint to create a COVID-19 vaccine started in January. The finish line awaits. – USA TODAY

For five days, the FedEx plane sat on the tarmac in Shanghai.
American scientists at Novavax, a biotech company in suburban Maryland, waited with increasing impatience. The plane held a copy of a ke…
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