Samples of a Covid-19 vaccine developed by the Gamaleya Research Institute of Epidemiology and Microbiology, in Moscow, Russia August 6, 2020. Across the world, governments are hoping to announce a vaccine as soon as possible and roll out treatments for Covid-19. — Russian Direct Investment Fund handout via Reuters
The UN health agency welcomed the fact that a “considerable number” of vaccine candidates had entered final stage Phase III trials, which typically involve tens of thousands of people. Under normal procedures, test administrators must wait for months or years to verify that vaccine candidates are safe and efficacious.
The US Food and Drug Administration has also raised the possibility that a vaccine might be given emergency authorisation before the end of trials. “The good news is the manufacturers are already putting bets on which one is likely to be the vaccine,” Harris said.
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