COVID-19 cases in China's most populous city jumped by a third despite stringent measures already in place to try to stop the virus spreading.
The city is on the third day of a lockdown that the officials have imposed by dividing the city roughly along the Huangpu River, splitting the historic centre west of the river from the eastern financial and industrial district of Pudong to allow for staggered mass tests.
On Wednesday Shanghai reported a record 5,656 asymptomatic COVID cases and 326 symptomatic cases for March 29, up from 4,381 new asymptomatic cases and 96 new cases with symptoms for the prior day.
Shanghai authorities told a press conference on Wednesday that since the lockdown began on Monday they had conducted 9.1 million nucleic acid tests.