Citizens take nucleic acid tests for the prevention of COVID-19 in Heihe City, Heilongjiang Province, northeast China, December, 30, 2020. /VCG
Northeast China's Heilongjiang Province has suspended all municipal bus and taxi services, the latest measure to stop the spread of the novel coronavirus, local authorities said on Sunday.
A day earlier, Heihe City's Aihui District reported four confirmed COVID-19 cases, which were previously asymptomatic.
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