운 좋게도, 유전 검사 결과를 통해 북쪽에서 온 것임을 알 수 있었습니다. 왜냐하면 남쪽의 바이러스는 훨씬 더 넓은 전염성을 가지고 있고
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.