Moderna Coronavirus Vaccine Phase 3 on 30,000 Volunteers

Moderna Coronavirus vaccine phase 3 final test

The extensive studies aren’t just to test. If the shots work they’re needed to check each possible vaccine’s safety and following the same study rules will let scientists eventually compare all the shots.

Covid-19 vaccine first tests

The coronavirus wasn’t even known to exist before late December, and vaccine makers sprang into action Jan. 10 when China shared the virus’ genetic order.

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