Spiking inactivated virus does not require BSL-3. You only need BSL-3 for isolating and growing live virus. So the vendors that create inactivated virus are doi

Spiking inactivated virus does not require BSL-3. You only need BSL-3 for isolating and growing live virus. So the vendors that create inactivated virus are doing so in BSL-3 facilities, but once it's inactivated you can work with it at much lower stringency. Seems like BSL-2 is standard.