It seems like the corona virus has spread mostly in cold climates on the northern hemisphere (in winter) and there are very few (confirmed) cases in Africa, South America and Australia. On the one hand the first two probably don't have the capabilities for testing on a large scale, but they should have it easier to detect the virus, since it can't be confused for the common cold. Could it be that the virus is transmitted (well) only in cold climates? And would that mean that the danger in Europe/the US will reduce drastically by May or June?
Maybe they know something we don't. Or maybe they are just being cautious. Or maybe they are even overreacting. All I'm saying is, this is evidence but not strong evidence.