Wuhan lab says there's no way coronavirus originated there


Date & time Apr 21 '20
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An unprecedented amount of research has been focused solely on understanding the novel coronavirus that has taken nearly 150,000 lives across the globe. And while scientists have gotten to know some of the most intimate details of the virus called SARS-CoV-2, one question has evaded any definitive answers — Where did the virus come from?To get more news about coronavirus wuhan, you can visit shine news official website.

Live Science contacted several experts, and the reality, they said, is that we may never know where this deadly coronavirus originated. Among the theories circulating: That SARS-CoV-2 arose naturally, after passing from bats to a secondary animal and then to humans; that it was deliberately engineered and then accidentally released by humans; or that researchers were studying a naturally-occurring virus that subsequently escaped from a high-security biolab, the Wuhan Institute of Virology (WIV) in China. The head of the lab at WIV, for her part, has emphatically denied any link to the institute.

Just today (April 18), the vice director of WIV Zhiming Yuan CGTN, the Chinese state broadcaster, said "there is no way this virus came from us," NBC News reported. "We have a strict regulatory regime and code of conduct of research, so we are confident."

Furthermore, the notion that SARS-CoV-2 was genetically engineered is pure conspiracy, experts told Live Science, but it's still impossible to rule out the notion that Chinese scientists were studying a naturally-occurring coronavirus that subsequently "escaped" from the lab. To prove any of these theories takes transparent data and information, which is reportedly not happening in China, scientists say. Several experts have said to Live Science and other media outlets have reported that the likeliest scenario is that SARS-CoV-2 is naturally occurring.
"Based on no data, but simply [a] likely scenario is that the virus went from bats to some mammalian species, currently unknown despite speculation, [and] spilled over to humans," said Gerald Keusch, associate director of the Boston University National Emerging Infectious Diseases Laboratories. This spillover event may have happened before the virus found its way into a live animal market, "which then acted as an amplifying setting with many more infections that subsequently spread and the rest is history," Keusch said. "The timeline is fuzzy and I don't think we have real data to say when these things began, in large part because the data are being held back from inspection," Keusch told Live Science.

The SARS-CoV-2 virus is most closely related to coronaviruses found in certain populations of horseshoe bats that live about 1,000 miles (1,600 kilometers) away in Yunnan province, China. The first known outbreak of SARS-CoV-2 in humans occurred in Wuhan and initially was traced to a wet seafood market (which sold live fish and other animals), though some of the earliest cases have no link to that market, according to research published Feb. 15 in the journal The Lancet.
What's more, despite several proposed candidates, from snakes to pangolins to dogs, researchers have failed to find a clear "intermediate host" — an animal that would have served as a springboard for SARS-CoV-2 to jump from bats to humans. And if horseshoe bats were the primary host, how did the bat virus hop from its natural reservoir in a subtropical region to the bustling city of Wuhan hundreds of miles away?

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