> I'm amazed that it's spreading so fast in US. That speed is an attribute of exponential growth. It has happened in all countries. One day there is one death

> I'm amazed that it's spreading so fast in US. That speed is an attribute of exponential growth. It has happened in all countries. One day there is one death a couple of weeks latter a hundred, the lock down comes shortly after. In four months there are at least 500,000 infected from just one case. That is fast. > why it's faster than other countries. My guess is that it is not faster, it is just a lack of testing that was hiding the real numbers. Deaths have a more tragic impact that infections and are easier to count. The number of deaths is an indicator of the real number of infections the country had two weeks to three weeks ago. As, the number of currently infected will result in deaths two to three weeks from now. That is why a lock down of three weeks is the bare minimum amount to have any kind of impact, even that is not enough to really keep it under check.