BEIJING — As of April 27, no deaths of the novel coronavirus disease (COVID-19) had been reported on the Chinese mainland for 13 consecutive days, a health official said on April 28.

The overall confirmed cases on the mainland had reached 82,836, and 4,633 people had died of the disease by April 27, said Mi Feng, a spokesperson for the National Health Commission at a press conference.

April 27 also saw the biggest number of the discharged imported cases in a single day, said Mi.

According to the commission, the total number of imported cases on the mainland reached 1,639 on April 27, of which 1,087 had been discharged from hospitals after recovery.

Mi also warned that new confirmed cases that were domestically transmitted had been reported for 21 consecutive days on the mainland.

Domestically transmitted cases with connections to imported ones and clustered infections had been consistently reported in some places, Mi noted.

Mi called for resolute efforts to break the transmission chain and guard against a domestic rebound of the epidemic.