This is indeed worrisome. I've been following the spread of the virus, trying to do a simple model based on the data, and both in China, and outside, the number of cases have been growing exponentially. They still do, even though the growth rate seems to have fallen slightly, probably due to the increased focus on the virus in recent days.
Don't panic though. First of all panic often makes you do something stupid. Secondly, this is one of those events that you and I as individuals have zero influence on. I sincerely doubt even the WHO or the Chinese government have much influence either, even though quarantine definitely seems to work. Finally, we still have very limited data, but from the data we have, it seems that there are at least 130 cases outside China, and no fatalities among those patients so far. That supports that the mortality rate is relatively low.
Today the Daily Whale has an article pointing out that the Chinese might be covering up the true number of deaths by cremating bodies that haven't been recorded in the official figures. That is possibly true, but first of all that also goes for the confirmed cases, where mild cases might not go on record, and summed up that would give a similar mortality rate or lower. Furthermore, if the virus was far more deadly than indicated by the Chinese data, then we would probably have seen at least one death among the current 130 cases outside China. Statistics is very useful, but it also tells us that we still have very limited data, leading to wider spread of the predictions.
Honestly, having followed this closely for a couple of weeks, my first impression was that the severity of the epidemic (how fast it was spreading) was kept secret because of fears for the Chinese Stock Exchange (and that pulling every other stock with it), but right now it seems that the important factor for the individual, being the mortality rate, is serious but not as scary as Sars, Ebola or Mers. Assuming that it's around 2%, then there is a 98% chance of recovery. That's worth remembering if the panic starts taking hold of you. Especially when you begin reading that it spreads a lot faster than predicted.
It's pure gut feeling, but I think we might overestimate the mortality of the virus as much as we underestimate its ability to spread. It's pure intuition from looking at the data, but at least it calms me down (quite a lot).