A district in the Chinese capital Beijing is on high alert after dozens of people there tested positive for the coronavirus - the first after two months of no infections in the city.
A wholesale market and 11 neighbourhoods in its vicinity have been placed under lockdown.
Throat swabs taken from 45 people at the market came out positive for COVID-19.
District officials say they are in 'wartime' footing.
Al Jazeera's Katrina Yu reports from Beijing, China.

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