At the moment, most tests are certainly being done in less than BSL4, there aren't that many of them. https://www.liquisearch.com/biosafety_level/list_of_bsl-4

At the moment, most tests are certainly being done in less than BSL4, there aren't that many of them. https://www.liquisearch.com/biosafety_level/list_of_bsl-4_facilities https://www.liquisearch.com/biosafety_level/list_of_bsl-4_fa...