(Yicai Global) May 15 -- Shanghai again reported no new imported or domestically transmitted novel coronavirus cases yesterday, marking two days running in which the eastern metropolis' patient total stood at 660, the city's health commission said this morning.

It also reported no asymptomatic cases under observation in the city as of yesterday.

Five people who were confirmed imported Covid-19 cases were released from hospitals yesterday after a full recovery, according to the commission.

Among the confirmed 321 imported Covid-19 cases so far, 15 patients are being treated, with two in serious condition, and 306 have been discharged upon recovery, the commission said.

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

Of the 339 local cases, seven have died and 332 patients have fully recovered and been released from hospital, the commission said.