The death toll from the coronary virus has increased to 81 and nearly 300 people have become ill.
There are also patients in Europe - it has been confirmed that three people have been infected with the virus in France.
So far, a Chinese national has been suspected of being infected with a virus by a virus in Serbia, but it has been determined at the Infectious Clinic in Belgrade that it was only a respiratory infection, Health Minister Zlatibor Loncar said.
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In China, national holidays are extended by three days as authorities try to curb the spread of the virus.
Chinese Prime Minister Li Keqang visited Wuhan, the capital of Hubei province and the center of the epidemic.
Wuhan is quarantined, and travel bans are in effect in several other cities.
