Shanghai is at the heart of the virus surge despite being in lockdown
Shanghai, China: China reported over 20,000 Covid-19 cases on Wednesday, the highest daily tally given since the start of the pandemic, with Shanghai the heart of the virus surge despite being in lockdown.
The country's "zero-Covid" strategy has come under immense strain as cases spike.
Until March, China had kept daily cases low with snap localised lockdowns, mass testing, and strict restrictions on international travel.