Biosafety containment level suitable for work involving agents of moderate potential hazard to personnel and the environment?

• A. Biosafety Level 1
• B. Biosafety Level 2
• C. Biosafety Level 3
• D. Biosafety Level 4

Answer: (B)

Moderate hazard agents require containment that prevents exposure to people and the environment while allowing routine work. Biosafety Level 2 provides that balance. It includes restricted access and biohazard signage, standard lab practices, and personal protective equipment such as lab coats, gloves, and eye protection. For procedures that could generate aerosols, work is done inside a biosafety cabinet to minimize inhalation risk, and waste is properly decontaminated (often by autoclaving). Training and appropriate response plans are in place to manage exposures if they occur. This level is specifically designed for agents that can cause illness but are not typically severe or highly transmissible, making it the best fit for moderate hazards. Higher levels (3 and 4) are reserved for agents that cause more serious or life-threatening disease and require more stringent containment, while Level 1 is for nonpathogenic organisms with minimal risk.