Countries that are heavily affected right now primarily have open borders with China (still!!?) - japan, South Korea, Italy, Iran, with tons of Chinese workers going back and forth
I would be much more alert right now as regards to people from Europe/Middle East. Iran is a pretty powerful source of infections to the whole region and so far is just keep escalating.
BTW: in Iran's case, they banned entry from China early on, but one of the merchants gets to China via 3rd country and bring the virus back home.
Once Manhattan reports its first confirmed case, then it’s over. This thing will go full blown.
It's time to assume the brace position, prepare for the worst and hope for the best.