So far I count this thing as being in eight or nine countries, which seems too high a number given the limited number of total cases.
If the disease spreads and sufficient alarm is raised, the fed gov't should act. Airlines grounded, Interstate highways closed, whatever. The effect on the economy would be massive, a terrorist's worst nightmare. The sooner they act the better: nip it in the bud if this is a real danger. But perhaps it isn't as bad as they said, where everyone dies if they get it; interesting to watch and judge the degree of panic over this.