Travellers wearing protective masks queue at the departure hall of the West Kowloon rail station in Hong Kong on January 23, 2020. (Photo by PHILIP FONG/AFP via Getty Images)

Travellers wearing protective masks queue at the departure hall of the West Kowloon rail station in Hong Kong on January 23, 2020. – The international finance hub has been on high alert for the mystery SARS-like virus ever since it first emerged within the Chinese city of Wuhan, killing 17 people so far. (Photo by Philip FONG / AFP) (Photo by PHILIP FONG/AFP via Getty Images)