Shanghai said it would continue with a lockdown as it reviews results of a massive exercise on Monday (April 4) to test all 26 million of its residents, in China’s largest public health response since the initial days of the pandemic.

This is the first time that the city has ordered all residents to be tested since the current outbreak started in early March.

Those who refuse to be tested without justification will face administrative or criminal punishment, Shanghai police said on Saturday.

There is mounting frustration among residents as medical facilities are overwhelmed, with videos on social media showing crowded mass quarantine centres and locals fighting with community workers, while others have also complained about the inability to access medical facilities such as dialysis centres.