A health officer disinfects a shopping district in Beijing on February 5, 2020. The number of the patients who have been infected with a new coronavirus has reached to 24,000 and the death toll has been confirmed 490 so far as of February 5th in China. As the outbreak continues to spread outside China, the World Health Organization (WHO) declared the new coronavirus a Global Health Emergency on Jan 31st. ( The Yomiuri Shimbun via AP Images )