BioLevel 1-4

BioLevel 1-4 categorize biological safety levels based on the risk posed by microorganisms. BioLevel 1 involves agents that pose minimal risk and require standard precautions. BioLevel 2 includes agents that can cause moderate illness; more precautions are necessary. BioLevel 3 involves microbes capable of causing serious or potentially lethal diseases but typically not airborne, requiring additional safety measures like specialized containment. BioLevel 4 is for the most dangerous pathogens, such as Ebola, that pose high risk of severe disease or death; strict biosafety protocols and full containment are mandatory to prevent exposure.