As the deadly coronavirus spreads, authorities in Wuhan, China, are quarantining the city.
The order stops all public transportation, prevents buses or trains from entering or exiting the city, and grounds all planes at the airport.
With 11 million people, Wuhan is larger than New York City.
Coronavirus, which originated in Wuhan, has killed 17 people and infected more than 540.
China announced Thursday the two additional cities of Huanggang and Ezhou will be quarantined on Friday.
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