(Yicai Global) March 30 -- Medical staff from neighboring Zhejiang province arrived in Shanghai on March 28 to help the Covid-19-hit city with nucleic acid testing amid the nine-day staggered lockdown.

Shanghai has tested 9.1 million people in Pudong district, Punan and adjacent areas so far, an official with the city's health commission said today.

Staff from the Second Affiliated Hospital to Zhejiang University School of Medicine prepare tests for a neighborhood in Pudong.

A medic from the same hospital takes a swap sample from a resident.

Staff from Sir Run Run Shaw Hospital affiliated to Zhejiang University School of Medicine test residents in a compound in Pudong.

A medic from the hospital swabs a resident.

Editor: Peter Thomas