The business hub of Shanghai has become the heart of China's biggest Covid-19 outbreak since the virus surfaced more than two years ago, and the city of 25 million has remained almost entirely locked down since the start of the month
A worker wearing personal protective equipment (PPE) walks on a street during a COVID-19 lockdown in the Jing'an district in Shanghai on April 12, 2022. (Credit: Hector RETAMAL / AFP)