Comment No way of estimating cases? (Score 2) 64
The North Koreans were pretty quick to close their border with China once China announced they had a problem, but that border saw a lot of trade for several months whilst the alarm hadn't been raised. Considering how hard the neighboring South Eastern Chinese provinces were originally hit, I find it very hard to believe that the virus did not cross the border.
As regards how many cases they have, I can't believe that satellite imaging isn't able to provide some answers. When Brazil was suffering under the first wave I remember seeing images of graveyards being extended and rows of freshly dug graves. I can only think that some satellite sources are considered too sensitive that they should be exposed just to confirm this point.