The siblings urged residents to join them in recognising the efforts of maintenance workers, security guards, and domestic helpers
The outbreak in the capital came after Beijing lowered its health emergency level from two to three on June 6.
The capital's main Xinfadi wholesale food market covers 112 hectares and has 1,500 employees, along with more than 4,000 stalls.
All staff and people who have had contact with the market should undergo testing in one of the 98 designated facilities in Beijing, which combined, can carry out more than 90,000 tests in a day.
The city has intensified inspection in the markets selling fresh produce such as frozen pork, beef, lamb and poultry products, and monitor other businesses such as supermarkets and restaurants to ensure produce is not contaminated.
Chinese Vice Premier Sun Chunlan on Sunday urged decisive measures to stop the spread of the fresh outbreak, along with strict epidemiological investigations and a comprehensive tracing to identify and control the source of infection.
Meanwhile, public health experts on Monday assured that the fresh outbreak in Beijing would not lead to a second wave of the epidemic in China, however they said that it was a warning to change the control policies in place.
The siblings urged residents to join them in recognising the efforts of maintenance workers, security guards, and domestic helpers
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