3 major US airports on alert for mystery virus

The CDC and Homeland Security said they'll begin screening passengers flying from Wuhan, China, to New York, Los Angeles and San Francisco.
1:58 | 01/18/20

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Transcript for 3 major US airports on alert for mystery virus
As several airports brace for this storm, they're preparing for something else. There's growing concern over a possible outbreak over a mystery virus. Preparing to screen passengers coming into the U.S. The pneumonia-like illness report in the China, spreading to Japan and Thailand. ABC's gio Benitez and our doctor tonight on what you need to know. Reporter: Tonight, a massive screening effort begins for about 5,000 passengers arriving from China after a mysterious respiratory virus has killed 2 and sickened at least 45 in Asia. The CDC deploying about 100 experts at San Francisco international, L.A.X., and New York's JFK, where the first flight from Wuhan, China, arrives in just hours. They'll be asked where they were in the previous two weeks, whether they came into contact with any animalsed that symptoms of an upper respiratory Reporter: Experts believe this is a new kind of coronavirus, which typically causes symptoms of the common cold, but in some rare cases can lead to pneumonia. An of two other Corona viruses, sars and mers proved deadly, but tonight it's unclear if this new virus is easily spread person to person. Other coronaviruses like sars and mers have taught us they need to be taken seriously. Reporter: Most of the patients in China contracted this virus at a seafood and meat market in Wuhan, but some cases have already been reported in Thailand and Japan where screening is also underway. This is obviously very concerning some gio is with us from a busy Kennedy airport tonight. Gio, the CDC is calling this a serious situation tonight. Reporter: Yeah, David, that's because more than 60,000 people travel from Wuhan to America every year. The CDC says the risk to the American public is low, but, David, they want to be ready. Better to be ahead of it. Gio, thank you. Next this Friday night, the

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

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