Despite internet rumors to the contrary, the new coronavirus arose from natural causes and was not concocted in a lab, researchers confirm.
strains, we can firmly determine that SARS-CoV-2 originated through natural processes," study co-author Kristian Andersen, an associate professor of immunology and microbiology at Scripps Research, said in an institute news release.
As the pandemic spreads, rumors of nefarious plots of scientists creating SARS-CoV-2 in a lab have proliferated. While both of those epidemics died out, COVID-19 continues to spread worldwide. Early on in the pandemic, Chinese scientists mapped the genome of SARS-CoV-2 and made that data freely available to scientists worldwide.on the outside of the virus, called spike proteins. SARS-CoV-2 uses these proteins to latch onto the host cell.One component, called the receptor-binding domain , is a kind of"grappling hook" that SARS-CoV-2 uses to grip human cells.
"These two features of the virus, the mutations in the RBD portion of the spike protein and its distinct backbone, rules out laboratory manipulation as a potential origin for SARS-CoV-2," Andersen said. The virus is extremely similar to coronaviruses observed in bats, but probably moved into another mammalian host , before moving to humans.
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