WIV contains a BSL-4 lab, which is fairly new. WIV itself has been around for 65 years. It contains many labs, at various levels of security. It's a huge has

WIV contains a BSL-4 lab, which is fairly new. WIV itself has been around for 65 years. It contains many labs, at various levels of security. It's a huge hassle to conduct work in the BSL-4, and researchers generally would only work in the BSL-4 if they were working with pathogens that required it. WIV has acknowledged that at least some of their bat coronavirus research was conducted in their BSL-2 labs which have a far, far lower level of security.