Three more areas in Jiangning District in Nanjing City, east China's Jiangsu Province, heightened their COVID-19 risk levels from low to medium on Saturday, the municipal government said, as the city battles a new cluster linked to Nanjing Lukou International Airport.
As of Friday, a total of 35 infections and 18 asymptomatic cases have been found in the city since July 20.
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