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Published 15:40 IST, June 2nd 2020

Monkeys, ferrets offer needed clues in COVID-19 vaccine race

The global race for a COVID-19 vaccine boils down to some critical questions: How much must the shots rev up someone’s immune system to really work? And could revving it the wrong way cause harm?

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Monkeys, ferrets offer needed clues in COVID-19 vaccine race
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15:40 IST, June 2nd 2020