Massive testing effort underway to contain coronavirus outbreak in Shanghai | The World

China's financial hub of Shanghai has launched a two-stage lockdown of its 26 million residents, closing bridges and tunnels, and restricting highway traffic in a scramble to contain surging COVID-19 cases. East Asia correspondent Bill Birtles tells The World a massive testing effort is underway. Subscribe: http://ab.co/1svxLVE ABC News provides around the clock coverage of news events as they break in Australia and abroad, including the latest coronavirus pandemic updates. It's news when you want it, from Australia's most trusted news organisation. For more from ABC News, click here: https://ab.co/2kxYCZY Watch more ABC News content ad-free on iview: https://ab.co/2OB7Mk1 Go deeper on our ABC News In-depth channel: https://ab.co/2lNeBn2 Like ABC News on Facebook:   / abcnews.au   Follow ABC News on Instagram:   / abcnews_au   Follow ABC News on Twitter:   / abcnews   Note: In most cases, our captions are auto-generated. #ABCNews #ABCNewsAustralia