(Yicai Global) April 7 -- Shanghai had discovered two more imported novel coronavirus cases as of yesterday, taking the eastern metropolis' total confirmed Covid-19 cases to 538, the city's health commission said this morning.

Both the new additions are Chinese citizens. One of them arrived in Shanghai from Russia and the other one came from the United Kindom, according to the commission.

Authorities have traced 24 people who had been in contact with the patients during their journeys and placed them under quarantine, it added.

Some 14 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 538 Covid-19 cases so far, including 199 from overseas. Some 138 of the patients who brought the virus into the city from outside China are being treated, with one in serious condition, and 61 have been discharged upon recovery.

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