Pfizer and BioNTech surprised many industry watchers on July 27 when they announced they would conduct a large-scale study of a vaccine for Covid-19. The surprise? The vaccine that would be tested in a 30,000-patient trial wasn't the one for which the companies had presented data on July 1.
from International: Top News And Analysis https://ift.tt/32dHf2a
via Dear Immigrant
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