'The study, published in the journal Nature, focused on swabs taken from surfaces in early 2020 at the Huanan Seafood Wholesale Market, a large market where many of the earliest known Covid patients had worked or shopped. The Chinese scientists had posted an early version of their genetic analysis of those samples in February 2022, but at the time downplayed the possibility of animal infections at the market.'

https://www.nytimes.com/2023/04/05/science/china-virus-origins-racoon-dogs.html?