Coronavirus: China tries to contain Delta outbreak as ‘zero tolerance’ approach is tested

China reported another 62 locally transmitted Covid-19 cases on Thursday as the highly transmissible Delta variant continues to spread and tens of millions of people are tested across the country.

While the transmission rate remains relatively low, authorities are scrambling to contain the latest wave of cases – the worst surge in months that has now reached 17 provinces. More than 500 people have tested positive since the first infections were reported at an airport in Nanjing last month.