(Yicai Global) May 16 -- Shanghai reported five more imported novel coronavirus cases yesterday, taking the eastern metropolis' total confirmed Covid-19 cases to 665, the city's health commission said this morning.

All the new additions are Chinese citizens. Four of them, employees of a cruise ship, left Japan on May 13 and arrived at the Pudong International Airport the same day. The fifth case who had traveled in the United Arab Emirates came to the city on May 2, according to the commission.

Authorities have traced 99 people who had been in contact with the patients during their journey and placed them under quarantine, the commission said.

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

The commission logged no new confirmed domestically transmitted cases yesterday. It also reported no asymptomatic cases under observation in the city the same day.

Among the confirmed 326 imported Covid-19 cases, 18 patients are being treated, with two in serious condition, and 308 have been discharged upon recovery, the commission said.

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