Biosafety levels (BSL-1 through BSL-4) are a set of containment classifications defined by the Centers for Disease Control and Prevention (CDC) that govern how laboratories handle biological agents. Each level introduces new requirements, covering personnel practices, protective equipment, and facility design, in addition to the previous level’s requirements. The higher the level, the more dangerous … Continue reading Biosafety Levels 1, 2, 3 & 4: What’s the Difference?