In response a rapidly spreading coronavirus, the Chinese government has quarantined the city of Wuhan with a metro population of 19 million just as the Chinese New Year holiday is starting. Unconfirmed internet videos show people collapsing in the streets.
There have been at least 800 cases in China with a death toll of at least 26. The number of deaths appears to be growing quickly, and at least two confirmed cases have already reached the US:
My understanding is the US is instituting checks of airline passengers from the Wuhan area. The Chinese New Year holiday involves hundreds of millions of people moving around China on crowded trains, planes, buses, etc.; it is likely that many cases have already spread to other parts of China and the rest of the world.
What should the US do in response to the rapidly growing outbreak?