Did the coronavirus responsible for the COVID-19 pandemic originate from live animals for sale in the Huanan Seafood Market in Wuhan, China, or as a lab leak from the Wuhan Institute for Virology? In search of answer to this question, a new article in Science parses the early outbreak data along with environmental samples taken in Huanan Market supplied by Chinese researchers. It finds that the market was the "epicenter" for the contagion. A second article concludes that the outbreak began after two genetically distinct coronaviruses infected people beginning in November and December of 2019.
Do these findings rule out the possibility that the COVID-19 coronavirus originated from the institute? No. The first article acknowledges that "events upstream of the market, as well as exact circumstances at the market, remain obscure, highlighting the need for further studies to understand and lower the risk of future pandemics." Those "events upstream" could include a scenario in which someone associated with the Virology Institute was unknowingly infected with the virus and carried it to the market while shopping.
