The city has just six confirmed cases with symptoms and 11 asymptomatic infections, official figures show.

Strict measures to rein in the virus include stopping the single metro line and many public buses from operating.

After the pandemic emerged in China in late 2019, the country has driven new infections to consistently low levels.

To avoid a second wave, even small clusters are taken very seriously by health authorities. The initial outbreak in the city of Wuhan was brought under control through some of the world's strictest lockdown measures.

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