Several districts in Shanghai are preparing for a three-day mass nucleic acid testing starting on Tuesday as the city is in a tug-of-war against a new wave of COVID-19, which has seen 319 positive cases, with the city designating one high-risk and 37 medium-risk areas.
The city of Shanghai has discovered a COVID-19 case involving a new subvariant Omicron BA.5.2.1, an official told a briefing on Sunday, signaling the complications China faces to keep up with new mutations as it pursues its "zero-COVID" policy.
Shanghai reported its first case of the BA.5 sub-variant on Sunday, warning of "very high” risks as the city’s rising Covid outbreak sparks fears of a return to its earlier lockdown.