Question

What biosafety level is attributed to microbiological agents that pose extreme risk; they pose high risk of life-threatening disease, may be transmitted by aerosols, and there is no vaccine or therapy available; they require a class III biological safety cabinet (BSC), full-body air-supplied positive pressure suit; independent unit with specialized ventilation & waste management to prevent release into environment?

A) BSL-1
B) BSL-2
C) BSL-3
D) BSL-4

Answer 1

The biosafety level for agents posing extreme risk, with no vaccine or therapy, requiring class III BSC and full-body suits, is BSL-4, which includes stringent containment measures. the correct answer is D .

Step-by-step explanation:

The biosafety level attributed to microbiological agents that pose extreme risk, require a class III biological safety cabinet (BSC), full-body air-supplied positive pressure suit, and specialized containment facilities is BSL-4. Microbiological agents at BSL-4 include those that present a high risk of life-threatening diseases, can be transmitted via aerosols, and currently have no effective vaccine or therapy.

These agents, such as Ebola virus and other hemorrhagic fever viruses, necessitate extreme biocontainment measures to prevent any accidental release into the environment. Specialized facilities for BSL-4 pathogens are rare and equipped with stringent safety measures including controlled ventilation and waste management systems, dedicated decontamination units, and stringent personal protective equipment (PPE) protocols to ensure the highest level of containment.