SHANGHAI, April 13 (Xinhua) -- Shanghai reported 11 imported cases of the novel coronavirus disease (COVID-19) Sunday, the municipal health commission said Monday.

Among them, nine were on the same flight from Russia and the other two came from the United States and Britain. All of them are Chinese nationals.

A total of 90 people in close contact with the confirmed patients on the flights have been put under quarantine.

The municipal health commission said a total of 279 imported cases had been reported in Shanghai by Sunday, while 36 suspected imported cases are under quarantine.

On Sunday, no new locally transmitted cases were reported and eight COVID-19 patients were discharged from hospitals in Shanghai after recovery.

By Sunday, the municipality has reported 339 locally transmitted confirmed cases, including seven deaths.