30 July 2021. China’s successful COVID-19 containment strategy is being put through one of its biggest tests yet as the contagious Delta coronavirus variant rips through Asia. Health officials have recorded dozens of new daily cases in the eastern city of Nanjing after the outbreak first started among workers at the city’s airport.https://www.abc.net.au/news/2021-07-30/how-china-tackles-delta-fuelled-coronavirus-outbreak-in-nanjing/100323692