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.
Untungnya, hasil tes genetik menunjukan bahwa, jenis Polio tersebut berasal dari utara sebab, jika Polio itu berasal dari selatan, maka dampak penyebarannya akan lebih luas.