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-1

Answer

BSL-2

Answer

BSL-3

Question 2

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

Accepted Answer

Inhalation of airborne droplet nuclei

Answer

Ingestion

Answer

Dermal contact

Answer

Vector-borne transmission

Question 3

Which OSHA standard specifically addresses occupational exposure to bloodborne pathogens?

Accepted Answer

29 CFR 1910.1030

Answer

29 CFR 1910.132

Answer

29 CFR 1910.1200

Answer

29 CFR 1910.134

Question 4

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

Accepted Answer

Infectious dose

Answer

Virulence factor

Answer

Pathogenicity index

Answer

Biological threshold limit value

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

Surgical mask

Answer

Powered air-purifying respirator (PAPR)

Answer

Supplied-air respirator

Question 6

What is the recommended post-exposure prophylaxis for a healthcare worker with a needlestick from an HIV-positive source?

Accepted Answer

Antiretroviral therapy initiated within 72 hours

Answer

Hepatitis B vaccine booster

Answer

Tuberculin skin test

Answer

Tetanus immunoglobulin