FILE - This Jan. 29, 2020, file photo shows screens warning about a new coronavirus in a subway train in Seoul, South Korea. The dangerous virus spreading through China threatens a wide range of industries with global ties to the world’s second largest economy. Chinese authorities have cut off access to Wuhan, where the virus originated, and 16 other cities to prevent further spread of the virus, affecting more than 50 million people. (AP Photo/Ahn Young-joon, File)
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