To be clear: U.S. intelligence officials think there’s no evidence whatsoever that the coronavirus was created in a laboratory as a potential bioweapon. Solid scientific research demonstrates that the virus wasn’t engineered by humans and that it originated in bats.

But how did the outbreak occur? Solving this medical mystery is important to prevent future pandemics. What’s increasingly clear is that the initial “origin story” — that the virus was spread by people who ate contaminated animals at the Huanan Seafood Market in Wuhan — is shaky.

Scientists have identified the culprit as a bat coronavirus, through genetic sequencing; bats weren’t sold at the seafood market, although that market or others could have sold animals that had contact with bats. The Lancet noted in a January study that the first covid-19 case in Wuhan had no connection to the seafood market.