HARBIN, April 13 (Xinhua) -- A mobile negative pressure lab has been put into operation Monday night in the city of Suifenhe, at the China-Russia border in northeast China's Heilongjiang Province, as the number of confirmed COVID-19 cases from overseas continues to rise.

A team of 15 medical experts from the National Institute for Viral Disease Control and Prevention under the Chinese Center for Disease Control and Prevention (CDC) on Sunday departed from Beijing for Suifenhe to aid the latter fighting against imported cases. Now the experts are conducting nucleic acid tests and scientific research in the lab they set up, according to the CDC.

Suifenhe has seen its imported COVID-19 cases climb to 243. The lab will help to increase the daily detection capacity in Suifenhe, which is key to the epidemic prevention and control, said Wu Guizhen, chief expert on biosecurity at the CDC.