Yes and no, best guess indicates that this Coronavirus has about a 3 week incubation period before becoming symptomatic, the bad side is that it is contagious before then. Based on my observations of closed environments like cruise ships, which are prone to rapid spread of disease anyway, it seems that 1 infected person in such close living quarters may infect a dozen more, who will in turn each infect another dozen before the first symptoms show up, add another week of delay for correct diagnosis in a large population, and that would put the roughly projected number of infected people at 12x12x12, or 1,728 from a single infected person after 3 weeks. Given that as of 2 days ago there were only 15 confirmed cases in the US, and those are under isolation, I think it is way too early to panic about this one. Though I personally would not be planning any vacations to tourist sites that attract lots of international tourist for the spring and summer. When we see 1,000 confirmed cases in the US, then it may be time to start taking more active precautions, as that will likely mean there are a 1,000,000 infected people out there to spread it, and 2 weeks after that it will be in every small town in the country, right now it is WAY down there on chances of things that will kill you in the US, way below lighting strikes.