Disturbing footage claims to show an airport in Shanghai descending into chaos with staff in hazmat suits forcing thousands of people to get tested.
The chaotic scenes were apparently sparked on Sunday night after two new cases in the city were confirmed to be close contacts of another airport worker who tested positive for Covid-19.
Officials at Pudong International airport suddenly decided to test thousands of its workers, collecting 17,719 samples through the early hours of Monday morning.
As the last-minute orders to get tested were given, videos purport to show a huge group of people linking arms and pushing back against officials in hazmat suits, who attempt to herd them into a basement.
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Other pictures from the airport clearly show masked staff being packed together with no social distancing as they are directed towards the on-site testing centre.
Across China, millions of people are being tested, with lockdowns imposed and schools shut down, following the discovery of cases in three cities last week.
As temperatures drop, large-scale measures are being enacted in the cities of Tianjin, Shanghai and Manzhouli, despite the low number of new cases compared to the US and other countries experiencing new waves of infections.
Many experts and government officials have warned that the chances of the virus spreading will be greater during the cold weather.
Recent flare-ups have shown that there is still a risk of the virus returning, despite being largely controlled within China.
On Monday, the National Health Commission reported two new locally transmitted cases in Shanghai over the last 24 hours, bringing the total to seven since Friday.
China has recorded 86,442 total cases and 4,634 deaths since the virus was first detected in the central Chinese city of Wuhan late last year.
Shanghai has been more selective with mass testing, targeting people associated with a particular place, such as the airport or the hospital where a confirmed individual had worked, rather than an entire district.
In Tianjin, health workers have collected more than 2.2 million samples for testing from residents in the Binhai new district, after five locally transmitted cases were discovered there last week.
In Manzhouli, a city of more than 200,000 people, local health authorities are testing all residents after two cases were reported on Saturday. They also shut down all schools and public venues and banned public gatherings.
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