Coronaviruses are part of a family of RNA-containing viruses known to cause severe respiratory illnesses.
The Health Protection Agency said coronaviruses are causes of the common cold but can also include more severe illness, such as the virus responsible for Sars (Severe Acute Respiratory Syndrome).
This new strain of coronavirus, known as novel coronavirus, was first identified in September 2012 in a patient who died from a severe respiratory infection in June 2012.
The virus has so far only been identified in a small number of cases of acute, serious respiratory illness who presented with fever, cough, shortness of breath, and breathing difficulties.
The World Health Organisation stressed it is not known how people become infected with this virus. However, it suggests avoiding close contact with anyone who shows symptoms of illness - coughing and sneezing - and maintaining good hand hygiene.
There is no vaccine currently available.
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