Luckily, the genetic testing proved that, in fact, this strand came north, because, had it come from the south, it would have had a much wider impact in terms of transmission.
幸いなことに遺伝子検査で 北から来たウイルスだと確認されました もし南から来ていたら 感染影響の規模は もっと大きくなっていた筈だからです