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China's Nanjing city has started mass Covid-19 testing of its 9.3 million population and suspended a subway line as the city faces the latest local coronavirus cluster in the country.
China's national health authorities have said a total of 12 new local Covid-19 patients were found on July 21, with 11 coming from Jiangsu province, to which Nanjing is the capital city.
Read the full Reuters story here.
