Covid-19 roundup: Biogen conference is tied to tens of thousands of Covid-19 cases; FDA chief Stephen Hahn walks back plasma comments
We knew back in March that Biogen’s international conference sparked a super-spreader event for Covid-19 that rattled the region and helped spur a devastating lockdown to help contain the virus. Now a group of experts have identified a genetic fingerprint in the virus that burst out at their gathering in Boston, and they reportedly believe it could safely be tied to tens of thousands of cases in the region and around the world.
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