In Wuhan, China, where the first cases of the coronavirus emerged in late 2019, at least two labs studied coronaviruses that originate in bats — the Wuhan Institute of Virology (WIV) and the Wuhan Center for Disease Control and Prevention (WHCDC). Both are close to the seafood market that was originally deemed the source of the outbreak. The WIV is about eight miles away. The WHCDC is right around the corner. The WIV is where one of the world’s foremost experts on bat viruses, Shi Zhengli, works. The WIV has a biosafety level 4 (BSL-4) laboratory, the most secure, where...