The US should be almost entirely unscathed due to our high levels of health care and sanitation. Cases that arise here will be quickly detected and isolated. This will limit transmission, far more so than in China. In addition, effective treatment regimens will be developed and applied so as to save the lives of most who become infected.
Quarantine everyone who comes into the United States from China, either directly or indirectly.
Good rule of thumb is wash hands and keep your fingers away from your face....would go far in preventing spread of many winter colds and flu viruses....at least it’s worked well for me.