A sealed negative-pressure zone is associated with which biosafety level?

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Multiple Choice

A sealed negative-pressure zone is associated with which biosafety level?

Explanation:
Negative-pressure containment is designed to prevent hazardous agents from escaping by ensuring air flows into the room rather than out of it. The space is sealed and has its own dedicated ventilation with exhaust air filtered through HEPA. This level of containment is used for the most dangerous pathogens, especially when there is no reliable treatment, and requires strict access control and specialized PPE. The combination of a sealed space and negative pressure is a hallmark of the highest biosafety level. Therefore, this setup corresponds to BSL-4.

Negative-pressure containment is designed to prevent hazardous agents from escaping by ensuring air flows into the room rather than out of it. The space is sealed and has its own dedicated ventilation with exhaust air filtered through HEPA. This level of containment is used for the most dangerous pathogens, especially when there is no reliable treatment, and requires strict access control and specialized PPE. The combination of a sealed space and negative pressure is a hallmark of the highest biosafety level. Therefore, this setup corresponds to BSL-4.

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