China is fighting nascent COVID-19 flare-ups across the country with mass testing and fresh restrictions, including in weary Shanghai where new cases have been linked to a building which houses a karaoke lounge that was operating illegally. 

Pressure is mounting on officials to avert a wider spread and disruptions similar to the painful and costly isolation that Shanghai, China’s most populous city, suffered in April and May. Those business disruptions rippled across the global economy.