China carries out an extraordinary effort to find every carrier of the virus, it is surprising this should occur, but, evidently, one person was missed. The other question is were there infected animals or animal products in the market? That would be a reinfecting and not a transmission by a carrier.
June 13, 2020
By Vivian Wang and
The Beijing authorities (click here) shut down a major seafood and produce market and locked down several residential complexes on Saturday after 53 people tested positive for the coronavirus in the city, renewing fears that China’s grip on the pandemic is not yet secure.
Nearly everyone who tested positive had worked or shipped at the Xinfadi market, a wholesale market on the city’s south side that sells seafood, fruit and vegetables, according to the Beijing health commission.
More than 10,000 people work at the market, which supplies 90 percent of Beijing’s fruits and vegetables, according to the state media. The virus was reportedly detected on cutting boards for imported salmon there....
Someone breathing over the salmon while cutting it? I doubt the salmon had the virus. Not every person that was found to have the virus purchased and ate salmon.
....China’s wet markets — where vendors sell fresh meat, seafood and produce — have come under scrutiny in recent months, because many of the first reported cases in Wuhan were tied to a seafood market there that has since been permanently closed. Epidemiologists have not arrived at a consensus on whether the market was the source of the virus....
Just because the market has been shut down in Wuhan doesn't mean the source is gone. The vendor that initially would have caused the first outbreak could have moved his sales to a different place. Wuhan is not seeing the outbreak because the contamination moved to Beijing.
...Of the seven people with symptoms, six had not left Beijing in the previous two weeks, officials said....
That is not an indicator either. They contracted it in Beijing, but, the transmission probably came from outside the city.
...The Beijing health commission said that at least three of the seven were employees of the Xinfadi market, including a 50-year-old purchaser for the market who was in serious condition and a 35-year-old salesman....
There is your contagion. Who did they have contact with as they purchased for the market?
It doesn't sound like this is an open consumer market, but, more similar to New York's Hunts Point Terminal Market where semi-trucks bring produce in from the country to be sold by suppliers into restaurants and local markets.
All the article states is that it is a coronavirus. I warned about this early on in that being specific is far more important. So, this virus in Beijing is SARS-CoV-2 and not another similar or different virus. Yes?