As the world enters the third year of the COVID-19 pandemic, the precise origins of the virus and the role of the Huanan market in kickstarting the outbreak remain hotly contested
The studies support previous the suspicion that “the animals in the market were the key element in early transmission,” says Dominic Dwyer, an epidemiologist at the University of Sydney, Australia. He was not involved in either study but was a member of the World Health Organization team that visited Wuhan last year to probe the origins of COVID-19. “It’s clear the viruses were circulating in the market and then exploded out of it.
And in the long run, experts warn that closing wet markets or banning wildlife consumption, as China has promised to do, is not going be enough to avert disease outbreaks. “We have a much bigger problem,” says David Redding, a conservation biologist at the Institute of Zoology in London, U.K. In fact, researchers in China were already conducting routine surveys of live animals sold at the Huanan market. In response to outbreaks of a deadly tick-borne disease, a team of scientists had been investigating four markets in Wuhan—including Huanan—every month between May 2017 and November 2019. That data,last year, has since become a valuable resource for scientists trying to understand the origins of SARS-CoV-2.
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