(Yicai Global) April 13 -- Shanghai reported 11 more imported novel coronavirus cases yesterday, taking the eastern metropolis' total confirmed Covid-19 cases to 618, the city's health commission said this morning.

All the new additions were Chinese citizens. According to the commission, nine of them arrived in Shanghai on the same flight from Russia on April 10. The rest two patients travelled from the United States and the United Kindom respectively.

Authorities have traced 90 people who had been in contact with the patients during their journeys and placed them under quarantine, the commission said.

It added 36 suspected cases, also involving people who have recently been overseas, are undergoing further tests.

The commission logged no confirmed domestically transmitted cases yesterday. It also reported no asymptomatic cases under observation in the city as of yesterday.

Shanghai has confirmed 618 Covid-19 cases so far, including 279 from overseas and 339 local cases. Of the imported cases, 161 patients are being treated, with one in serious condition, and 118 have been discharged upon recovery.

Of the local cases, seven had died, four are hospitalized including two in critical condition, and 328 patients have fully recovered and been discharged from hospital, the commission said.