CIH CIH - Certified Industrial Hygienist Biological Hazards and Biosafety Questions and Answers

Question 1

Which biosafety level (BSL) is required for work with agents that may cause serious or potentially lethal disease for which no vaccine or therapy is available?

Accepted Answer

BSL-4

Answer

BSL-4 is the highest containment level, required for dangerous and exotic agents posing high risk of life-threatening disease with no available vaccine or therapy.

Question 2

What is the primary route of exposure for occupational transmission of Mycobacterium tuberculosis?

Accepted Answer

Inhalation of airborne droplet nuclei

Answer

M. tuberculosis spreads primarily via inhalation of small airborne droplet nuclei (1–5 µm) that can remain suspended in air for extended periods.

Question 3

Which OSHA standard specifically addresses occupational exposure to bloodborne pathogens?

Accepted Answer

29 CFR 1910.1030

Answer

29 CFR 1910.1030 is OSHA's Bloodborne Pathogens Standard, covering exposure to HIV, HBV, and other bloodborne pathogens in the workplace.

Question 4

What term describes the minimum number of organisms required to cause infection in a host?

Accepted Answer

Infectious dose

Answer

Infectious dose is the minimum number of microorganisms needed to establish an infection in a susceptible host.

Question 5

Which type of respirator is recommended as minimum protection when entering a space with suspected Histoplasma capsulatum contamination?

Accepted Answer

Half-face air-purifying respirator with P100 filters

Answer

At minimum, a half-face air-purifying respirator with P100 particulate filters is recommended for Histoplasma-contaminated environments to prevent inhalation of fungal spores.

CIH - Certified Industrial Hygienist Exam Practice Test

CIH - Certified Industrial Hygienist Exam Practice Test

CIH CIH - Certified Industrial Hygienist Biological Hazards and Biosafety Questions and Answers