Science Under Glass: Inside a Biosafety Level 4 Lab Figure 1PANDORA'S BOXESContainment cabinets in a BSL-3 laboratory, prior to the construction of modern BSL-4 labs.At first glance, the lab looks ...

NIHSAD to be upgraded to BSL-4 lab for testing deadly pathogens TNN / Jun 24, 2025, 00:19 IST ...

There are 14 in North America, and 13 in Asia. Of the 23 countries that have BSL-4 labs, only 17 have national biosafety associations or are members of international partnerships.

Europe hosts most of the BSL-4 labs in the world, with 25, followed by North America with 14 and Asia with 13. Australia hosts four and Africa has three.

The largest concentration of BSL-4 labs is in Europe (25) while North America and Asia have roughly equal numbers, with 14 and 13 respectively. Three-quarters of the labs are based in urban centers.