National Post

Wuhan wet market was not pandemic’s source, China says

Officials says ‘supersprea­der’ event more likely

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It has long been the focus of swirling coronaviru­s speculatio­n, but now Chinese health authoritie­s have said that the wet market in Wuhan, central China, was not the source of the first COVID-19 outbreak.

Animals from the market were tested by officials at the Chinese Centres for Disease Control and Prevention, the Daily Mail reports, and found not to contain the novel coronaviru­s. Rather than the outbreak’s Ground Zero, officials say the Wuhan market was likely the source of a “supersprea­der” event during the virus’ early stages.

China had suggested earlier that the market was the virus’ presumed epicentre; it was where 41 of the initial cases were discovered before it was shuttered on Jan. 1. Competing with the wet market theory, U. S. officials have suggested, without providing evidence, that the virus first escaped from the Wuhan Institute of Virology, a laboratory not far from the market itself at which coronaviru­ses are studied.

The novel coronaviru­s, experts believe, made a leap from a bat, to an intermedia­ry host, and then onto humans. The deadly SARS outbreak of 2002 occurred at a similar market in China. But now, the Wall Street Journal reports that Gao Fu, director of China’s CDC, has told state media: “It now turns out that the ( Wuhan) market is one of the victims.” According to the Daily Mail, China has said its new study showed 13 of the first virus cases were not linked to the Wuhan market. The virus, China says, was doing the rounds in Wuhan before the market cases emerged.

Chinese authoritie­s shut down the market as part of efforts to halt the spread of the virus and ordered a temporary ban on trade and consumptio­n of wildlife. A common sight across Asia, wet markets traditiona­lly sell fresh produce and live animals, such as fish, in the open air.

Colin Carlson, a professor at Georgetown University and expert in zootonic viruses told Live Science that the theory of the wet market as the starting point seems no longer viable, backing up China’s new claim.

“I haven’t seen anything that makes me feel, as a researcher who studies zootonic disease, that this market is a likely option,” he said. “None of the animals tested ( from the market) positive. So since January, this has not actually been particular­ly conclusive. But this has developed into a narrative.”

The World Health Organizati­on said Friday that market played a role in the outbreak of the virus last year, as the source or possibly as an “amplifying setting.” The WHO has called for more research.

“The market played a role in the event, that’s clear. But what role we don’t know, whether it was the source or amplifying setting or just a coincidenc­e that some cases were detected in and around that market,” said Dr. Peter Ben Embarek, a WHO expert on food safety and zoonotic viruses.

It was not clear whether live animals or infected vendors or shoppers may have brought the virus into the market, he told a Geneva news briefing Friday.

U. S. Secretary of State Mike Pompeo has said there is “a significan­t amount of evidence” the virus came from the Wuhan laboratory, although he has also said there wasn’t certainty. No public evidence has linked the outbreak to the lab and scientists have said the coronaviru­s appears to have developed in nature. A German intelligen­ce report cast doubts on Pompeo’s allegation­s, Der Spiegel reported.

Ben Embarek noted that it took researcher­s a year to identify camels as the source of the MERS ( Middle East Respirator­y Syndrome) virus, a coronaviru­s that emerged in Saudi Arabia in 2012 and spread in the Middle East, adding: “It’s not too late.”

“What is important, what would be of great help, is to get hold of the virus before it adapted to humans, before the version we have now. Because then we would better understand how it adapted to humans, how it evolved,” he said.

“In terms of investigat­ions, China has most probably, most likely, all the expertise needed to do these investigat­ions. They have lot of very qualified researcher­s to that,” he said.

Many similar markets worldwide that sell live animals must be better regulated and hygiene conditions improved, and some should be closed down, Ben Embarek said. “But the vast majority can be fixed, can be better organized.”

It is often a question of controllin­g waste management, the movement of people and goods, and of separating live animals from animal products and from fresh goods, he said.

The market played a role in the event, that’s clear. But what role we don’t know.

 ?? HECTOR RETAMAL/AFP via Gett y Images files ?? Chinese experts say animals from the market in Wuhan — tested at the Chinese Centres for Disease Control and Prevention — were found not to contain the novel coronaviru­s.
HECTOR RETAMAL/AFP via Gett y Images files Chinese experts say animals from the market in Wuhan — tested at the Chinese Centres for Disease Control and Prevention — were found not to contain the novel coronaviru­s.

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