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SEOUL, SOUTH KOREA - FEBRUARY 05: A disinfection worker wearing protective gear spray anti-septic solution against the novel coronavirus at a Chinese food store in Daerim Central Market, a neighbourhood with one of the largest Chinese population on February 05, 2020 in Seoul, South Korea. The death toll climbed to 420 in China. Cases have also been reported in other countries including the United States, Canada, Australia, Japan, Hong Kong, Singapore, South Korea, India, the United Kingdom, Germany and France. (Photo by Chung Sung-Jun/Getty Images)

SEOUL, SOUTH KOREA - FEBRUARY 05: A disinfection worker wearing protective gear spray anti-septic solution against the novel coronavirus at a Chinese food store in Daerim Central Market, a neighbourhood with one of the largest Chinese population on February 05, 2020 in Seoul, South Korea. The death toll climbed to 420 in China. Cases have also been reported in other countries including the United States, Canada, Australia, Japan, Hong Kong, Singapore, South Korea, India, the United Kingdom, Germany and France. (Photo by Chung Sung-Jun/Getty Images)