No new cases of novel coronavirus infection were confirmed in Shanghai in the latest 12 hours as of midday Friday, and 20 suspected cases were ruled out, said the city's health commission.

Another 12 patients with coronavirus infection were released upon recovery on Friday.

So far, the city has reported 334 infections and ruled out 2,030 suspected cases.

Among all confirmed patients, aged between 7 months and 88 years old, 144 have traveled or lived in Hubei Province, 33 have traveled or lived in other regions, and 157 had contact history with infected persons.

A total of 110 patients are from outside the city, while 224 are local residents — those with registered residency and people staying in the city for over six months.

According to the commission, 107 patients are stable, three are in serious condition and 11 are critical. A total of 211 patients have recovered and been discharged from hospital.

There have been two local fatalities, and another 105 suspected cases are undergoing tests.