Staff members put on their personal protective equipment in a "Falcon" air-inflated testing lab for COVID-19 nucleic acid testing at Nanjing Railway Station in Nanjing, capital of east China's Jiangsu Province, July 27, 2021. (Xinhua/Ji Chunpeng)

NANJING, Aug. 9 (Xinhua) -- The city of Nanjing in east China's Jiangsu Province reported no new locally transmitted cases of the novel coronavirus on Sunday.

This was the first time that the city with a population of more than 9.3 million saw no new cases since new cluster infections began to emerge on July 20 when a few airport cleaners at the Nanjing Lukou International Airport tested positive during routine testing.

The city currently has one high-risk area and 19 medium-risk areas for COVID-19, said the municipal health commission.

By Sunday, a total of 231 locally transmitted confirmed cases had been reported in Nanjing since July 20 and 18 people have been cured and discharged from hospital.