(Yicai Global) April 9 --Shanghai reported nine more imported novel coronavirus cases yesterday, taking the eastern metropolis' total confirmed Covid-19 cases to 552, the city's health commission said this morning.

All the new additions are Chinese citizens. Four of them arrived in Shanghai from Russia, four of them travelled from the United Kindom, and the fifth one came from France, according to the commission.

Authorities have traced 53 people who had been in contact with the patients during their journeys and placed them under quarantine, it added.

Some 11 suspected cases, also involving people who have recently been overseas, are undergoing further tests.

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

Shanghai has confirmed 552 Covid-19 cases so far, including 213 from overseas. Some 124 of the patients who brought the virus into the city from outside China are being treated, with one in serious condition, and 89 have been discharged upon recovery.

Of the 339 local cases, seven had died, four are in critical condition, and 328 patients have fully recovered and been discharged from hospital, the commission said.