The outbreak of this coronavirus has spread from Wuhan to other major cities.
But what exactly is this new virus and how easy is it to contract?
You have been sending BBC News your questions about coronavirus.
BBC News online's health editor Michelle Roberts answers your questions.
Based on currently available information, the World Health Organization has not recommend any restrictions on travel or trade.
You should re-check the latest travel advice before you depart.
Currently, UK airports are not screening passengers on arrival. The government is keeping the situation under review.
Extra checks such as temperature scans have been put in place to screen some travellers elsewhere.
Airports in Singapore, Hong Kong and Tokyo have been screening air passengers from Wuhan and US authorities last week announced similar measures at three major airports in San Francisco, Los Angeles and New York.
It is not yet known how the virus was transmitted. Other coronaviruses, such as Sars and Mers, came from cats and camels respectively.
Experts are working to find the source.
Standard recommendations to prevent infection apply. These include:
regular hand washing
covering mouth and nose when coughing and sneezing
thoroughly cooking meat and eggs
Avoid close contact with anyone showing symptoms of respiratory illness such as coughing and sneezing.
In its advice to travellers, the UK's National Travel Health Network and Centre (NaTHNaC) says there is a low risk of pneumonia due to the novel coronavirus to travellers to Wuhan but simple precautions such as washing hands should be taken.
NaTHNaC adds: "You should also avoid animals (alive or dead), animal markets, and products that come from animals (such as uncooked meat).
"Seek medical attention if you develop respiratory symptoms within 14 days of visiting Wuhan, informing your health service prior to attendance about your recent travel to the city."
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