The Hindu Explains | What has the WHO team’s field visit to China thrown up regarding the spread of SARS-CoV-2?
4 years, 1 month ago

The Hindu Explains | What has the WHO team’s field visit to China thrown up regarding the spread of SARS-CoV-2?

The Hindu  

The story so far: After several months of delay, concerns over access, and bickering between China and the U.S., a 17-member team from the World Health Organisation began a field visit on January 29, 2021, to unearth the origin of the SARS-CoV-2 virus that has so far spread to over 108 million people and killed nearly 2.4 million people across the globe. The SARS-CoV-2 virus, with its distinctive spike protein that allows it to bind to human receptors and enter cells, may have either evolved in the intermediate host itself, making the virus spread readily from one person to another, or it may have gained the ability for human-to-human transmission in humans after jumping from an intermediate host. Based on the analysis of public genome sequence data from SARS-CoV-2 and related viruses, scientists have not found any evidence that the virus was made in a laboratory or engineered by humans. “Although showing differences in sequence similarity, SARS-CoV-2 looks very much like a natural virus transferred from the same horseshoe bat species as the first SARS virus, and is now evolving as would be expected in the human population,” Dr. Robertson writes.

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