Where Are We in Finding the Coronavirus’s Origin?

More than a year after Covid-19 touched off the worst pandemic in more than a century, scientists have yet to determine its origins. The closest related viruses to SARS-CoV-2 were found in bats more than 1,000 miles from the central Chinese city of Wuhan, where the disease erupted in late 2019. Initially, cases were tied to a fresh food market and possibly the wildlife sold there. Other theories allege the virus accidentally escaped from a nearby research laboratory, or entered China via importe

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