Medical authorities have confirmed that the coronavirus can be transmitted during the incubation period, a remarkable difference to the SARS virus that killed over 800 people in 2003.
The warning comes after it emerged that over 2,000 people have become infected with coronavirus worldwide, with at least 56 related deaths confirmed.
The United States has moved to evacuate its citizens from the city of Wuhan, as concerns over a global pandemic grow.
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