Shanghai Returns to Lockdown for Mass Testing on Covid Fears

(Bloomberg) — Shanghai will briefly lock down most of the city this weekend for mass testing as Covid-19 cases continued to emerge, causing more disruption and triggering a renewed run on groceries days after the end of a grueling two-month shutdown.

The plan emerged from one area with a handful of cases, then spread within hours to 15 of the financial hub’s 16 districts. It encompasses almost all of the city’s 25 million residents as health officials use testing to root out any silent transmission of the virus, a key tool in China’s “zero-Covid” arsenal.