When a new coronavirus was detected in Wuhan on December 31 last year, South Korea immediately set up an emergency team to study the disease. They were among the first to travel to the epicentre in China to learn more about a virus which has now engulfed the world. The early action taken by the South Korean Government and the knowledge they gained about Covid-19 went on to shape what has become the world's most ambitious virus testing programme. • Subscribe to ITV News on YouTube: http://bit.ly/2lOHmNj • Get breaking news and more stories at http://www.itv.com/news Follow ITV News on Facebook: / itvnews Follow ITV News on Twitter: / itvnews Follow ITV News on Instagram: / itvnews