Origin and spread: The Hindu Editorial on identifying the source of SARS-CoV-2
The HinduBy concluding that a virus leak from a laboratory in China’s Wuhan, where the SARS-CoV-2 virus first emerged, is “extremely unlikely” and did not require further study, a 17-member WHO team and its Chinese counterparts have put to rest conspiracy theories that emerged early during the pandemic. While many scientists had dismissed the lab-origin theory, in mid-February 2020, a group of 27 prominent scientists from outside China “strongly condemned conspiracy theories” in a letter published in The Lancet. The group said scientists who had analysed virus genome sequence data shared by China and multiple countries could “overwhelmingly conclude” that SARS-CoV-2, like emerging pathogens, had originated in wildlife. Also, in a report in The New England Journal of Medicine, scientists from the China CDC found evidence of human-to-human transmission as early as mid-December 2019, which again suggests virus circulation weeks before it was identified in Wuhan.