The first confirmed cases of the deadly virus were reported in Europe on Friday.
Train stations have been closed, flights suspended and checkpoints put in place in Wuhan to try and stop the spread of the virus.
Suspected cases are being tested for in the UK. We explain the symptoms, where the virus has spread and what the experts say.
Fourteen people in the UK have been tested, with five confirmed negative and nine still awaiting the results.
Public have been asked to avoid "all but essential travel” to Wuhan.
Flights and trains at one of country's biggest cities halted as decision on global emergency declaration delayed.
There have been 45 confirmed cases of the virus so far, but scientists have said hundreds more people could have been infected.
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