Ongoing investigations into the source of new COVID-19 cluster in Beijing


  • Heather Mason
  • Univadis Medical News
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Following 56 days of no reported confirmed COVID-19 cases or asymptomatic infections in Beijing, a local case was reported on 11th June with no known travel history or contact with a case. Preliminary investigations revealed that some of the initial symptomatic cases had a link to the Xinfadi Market in Beijing.

Between 11th and 14th June, 77 symptomatic laboratory-confirmed cases have been identified, including two cases who travelled to Liaoning Province. Through active screening, a further 46 laboratory-confirmed, asymptomatic cases have been identified.

WHO is aware of 40 environmental samples taken from the Xinfadi market, which have tested positive for SARS-CoV-2. Genetic sequencing from the human and environmental samples is ongoing, and WHO has encouraged the release of these sequences as soon as possible and recommends thorough investigations to understand the source of this new cluster. All cases are isolated and receiving care, and their recent contacts are being followed up and tested, according to the World Health Organization.

Six wholesale markets in Beijing have been fully or partially closed. Those working in the market, those living in the surrounding area and those who had visited in preceding weeks are being traced and tested. Some local measures that were relaxed have been re-implemented in Beijing.