新型コロナ 茨城で初の感染者確認 ひたちなかの男性 伊から帰国

[2221. 匿名]

Trevor Bedford on Twitter: "Thanks to sequencing by @UWVirology, @CDCgov and @seattleflustudy we have genomes for 39 viruses sampled from WA. Importantly 35 of these 39 viruses (90%) fall into a single genetic cluster indicating a single ~Jan introduction