Chinese city of 11 million on lockdown amid deadly virus

The restrictions in the city of Wuhan come as health authorities race to react to the deadly new coronavirus, which has infected one American patient who is under quarantine in a Seattle hospital.
3:05 | 01/23/20

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Transcript for Chinese city of 11 million on lockdown amid deadly virus
The city at the center of the outbreak in China and two others going on lockdown as authorities try to stop the spread. Those numbers growing this morning. Now more than 600 affected and at least 17 killed. There is one case that we've been reporting here in the U.S. And five U.S. Airports are now screening passengers. Kayna Whitworth is in evert, Washington, where the American patient is being treated. Good morning, kayna. Reporter: Robin, good morning. So officials here have set up a call center for anyone who thinks they may have been exposed to the coronavirus. In the meantime, they are monitoring their one confirmed patient who is here at the hospital in isolation and he will remain that way until the CDC says he can be released. This morning, new details on the American patient infected with the coronavirus. The unidentified man in his 30s under quarantine in a Seattle hospital, living in a biocontainment room with security guards. The few medical professionals who have access using a specially skilled robot to limit their contact. The man at the time asymptomatic flew in from Wuhan last Wednesday, fell ill the next day and reached out for medical attention. Within 24 hours tested positive for the virus. The patient also provided a good history, let us know he was at high risk. Reporter: Seattle officials now working on verifying 16 people he may have been in close contact with. The department of health epidemiologists to complete an extensive travel history with the patient. Reporter: This morning two other Chinese cities on lockdown. Overnight Wuhan ground zero for the outbreak but also one of the largest transportation hubs in central China is enacting a travel ban. Shutting down public transit as well as temporarily suspending departures from the train station and airport. This new video shows emergency checks in one of the last flights out of Wuhan. Two passengers removed from the plane. I am in China. Reporter: American Matthew Mccoy a constant traveler in the country since 2013 says people are being extra cautious. Nobody is at the shopping malls and now nobody is at the movie theaters and very few people are out and about. They've all got their groceries and staying in-house as much as possible to try to weather this situation. Reporter: The CDC now funneling all passengers arriving from Wuhan through five U.S. Airports with mandatory screenings posting advisories at checkpoints in 14 airports. The last flight from Wuhan landing at JFK last night and in Boston screening ten passengers coming from Hong Kong. All were cleared. So we have learned that officials here have confirmed the flight that this Washington state man was on and they are in the process of alerting all of the passengers. But also all of the doctors that I spoke with here, Michael, say they absolutely anticipate seeing more cases of the coronavirus here in the U.S., specifically because this virus spreads so quickly. Michael. We sure hope they can isolate it. Thank you so much, kayna.

This transcript has been automatically generated and may not be 100% accurate.

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