There's now a nursing home in Washington with a staffer, and a resident[1][2] confirmed to have COVID-19, and ~50 people in that nursing home showing symptoms. But, since only those 2 people have been tested, the national stats look amazing! Only 4, no, scratch that, 6 transmissions!
[1] https://nymag.com/intelligencer/amp/2020/02/two-new-us-coron...
[2] Neither of them have been to China.