Virologist friends: Has anyone looked into the question of whether Europe and the Eastern U.S. might have caught a different, more contagious, more deadly strain of COVID-19 than Asia, Australia, and the Western U.S.? Is this possible, or impossible, given what we know?

Thanks, everyone!

Best answer I found was this thread: https://twitter.com/trvrb/status/1244750391998156800">https://twitter.com/trvrb/sta...