It is here.
The bug is in the US. Hundreds of thousands of Chinese students in the US. Many went home over the Christmas break. The bug was running wild then. Many other Chinese fled before the quarantine. Heck, local hotels have a large increase of people from the PRC.
I suspect the CDC knows this. Knows it is running wild, and doesn’t have any idea what to do. The recent announcements, the talk of the DOD implementing pandemic plans... If I see a bunch of new National Guard and Reserve activation then we will know.
So to answer you question, we (North America) are about to find out.
I suspect the same. They well know it is an uncontrollable disease. I would think we have eyes and ears on the ground all over China with this disease. Cell phones and computers are easily eavesdropped on by those in the know.
Attempting to prevent COVID-19 from going pandemic may be like trying to block a tsunami with a sandcastle.