The main concern is that China had severely underplayed the extent to which the disease had already spread. Regardless of its low mortality rate or no, it is definitely more infectious than previous incidences of other coronavirus outbreaks and ebola in 2014 (which was less infectious, higher mortality). Given also that its incubation period can be up to a fortnight before symptoms present, it can be quite difficult to discern whether or not you have caught the disease until it's too late-and then you too will have spread it further.
But to be honest, we are MOST LIKELY FINE. It does appear that the situation is spiralling a little out of control in China-my parents are Chinese living the UK but we are getting messages from friends and family describing how no one is basically leaving the apartments now and all the supermarkets are completely empty as prices start rising. They have shut down multiple cities almost entirely-in Beijing, all the major attractions like the Forbidden Palace, Temple of Heaven are all closed. Entire transport networks like the bus or tube have been halted. Cases are popping up in every city now-plus deaths not just in Hubei province. Also there is great concern that the actual number of cases could be 2-3 times higher than what China is reporting, given this time last week there were only according to them 300 or so cases and no deaths, and here we are with 56 deaths and 2000 cases. Chinese media are reporting it like they reported SARS back in the day, as if they're going to war with guns and tanks (when they 'defeated' SARS back in 2003 state media reported winning a 'decisive victory' against the SARS. Huzzah indeed.)
We're most likely safe in the UK though. Just to be cautious however I'm carrying around my sunglasses and a gas mask I have from last time I went to China (for the air pollution, not for the disease. Multiple uses I guess!) Given mortality rate is low, even in the very unlikely chance that you did get the disease, you will most likely be fine, given we live in a more advanced nation with fewer people to support.
tl:dr we're probably fine, just be on the lookout.