Millions tested in Shanghai as China grapples COVID resurgence

Millions of people in Shanghai queued for a third day of mass COVID-19 testing on Thursday as authorities in several Chinese cities scrambled to stamp out new outbreaks that have rekindled worries about growth in the world's second-largest economy. Unless local officials succeed in preventing the virus from spreading, they could be compelled to invoke prolonged, major restrictions on residents' movement, under China's 'dynamic zero COVID' strategy.