Science behind the virus: How long will it take to develop a COVID-19 vaccine?

Since 2003 the world has faced three outbreaks caused by the coronavirus family. But a vaccine was absent during the outbreak of SARS, and MERS, and very likely, this time too. But it's not all bad news. What many people don't realize, is that over past 17 years, the time it takes to develop a vaccine has drastically shortened. Subscribe to us on YouTube: https://goo.gl/lP12gA Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvnews-app/id922456579?l=zh&ls=1&mt=8 Download our APP on Google Play (Android): https://play.google.com/store/apps/details?id=com.imib.cctv Follow us on: Website: https://www.cgtn.com/ Facebook: https://www.facebook.com/ChinaGlobalTVNetwork/ Instagram: https://www.instagram.com/cgtn/?hl=zh-cn Twitter: https://twitter.com/CGTNOfficial Pinterest: https://www.pinterest.com/CGTNOfficial/ Tumblr: http://cctvnews.tumblr.com/ Weibo: http://weibo.com/cctvnewsbeijing Douyin: http://v.douyin.com/aBbmNQ/