Because biosafety level 3 (BSL-3) organisms have the potential for aerosol transmission, and diseases with these agents may have serious lethal consequences, all of the following guidelines apply to BSL-3 laboratories, except:
A) BSL-3 laboratories should be separated from other parts of the building by an anteroom.
B) BSL-3 laboratories should have restricted access with documentation of personnel entering and exiting the laboratory.
C) BSL-3 laboratories should have solid ceiling and floor seams, and any seams must be sealed.
D) BSL-3 laboratories should have positive air pressure.

Question

Quizplus · Accepted Answer

All of the guidelines listed are actually necessary for BSL-3 laboratories, including having solid ceiling and floor seams, restricted access, and an anteroom. The only option that does not apply to BSL-3 laboratories is having positive air pressure. BSL-3 laboratories should have negative air pressure to prevent airborne pathogens from spreading outside of the lab.

Because Biosafety Level 3 (BSL-3) Organisms Have the Potential for Aerosol