BEIJING — Here are the latest developments on the novel coronavirus disease (COVID-19) in China:

— Chinese health authority said on April 21 that it received reports of 11 new confirmed COVID-19 cases on the mainland April 20, of which four were imported.

The other seven new cases were domestically transmitted, including six in Heilongjiang province and one in Guangdong province.

No death was reported on April 20 on the mainland.

As of April 20, the mainland had reported a total of 1,587 imported cases. Of the cases, 776 had been discharged from hospitals after recovery, and 811 were being treated with 44 in severe conditions.

— The overall confirmed cases on the mainland had reached 82,758 by April 20, including 1,003 patients who were still being treated and 77,123 people who had been discharged after recovery. Altogether 4,632 people had died of the disease.

— Also on April 20, 37 new asymptomatic cases, including two from abroad, were reported on the mainland. Three asymptomatic cases, all domestic ones, were re-categorized as confirmed ones, and 32 people, six of whom were from abroad, were discharged from medical observation.

A total of 992 asymptomatic cases, including 180 from abroad, were still under medical observation.

— Heilongjiang province April 20 reported six new locally-transmitted confirmed COVID-19 cases and two new imported confirmed cases. All the new imported cases were Chinese nationals returning from Russia.

On April 20, Heilongjiang also reported six new locally-transmitted asymptomatic cases and two imported asymptomatic cases. The province had a total of 39 imported asymptomatic cases by April 20.

— No new confirmed cases or deaths were reported in Central China's Hubei province April 20. Hubei had 544 asymptomatic cases under medical observation by April 20 when 20 new cases were reported.

Hubei has so far reported 68,128 confirmed COVID-19 cases in total, including 50,333 in Wuhan.

— No new cases of COVID-19 were reported on April 20 in Shanghai.