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Infection Control · single question

A 'tuberculocidal' disinfectant is specifically effective against:

  1. All bacterial spores
  2. All viruses
  3. Hepatitis B virus
  4. Mycobacterium tuberculosis
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Correct answer: D. Mycobacterium tuberculosis

Tuberculocidal = INTERMEDIATE-LEVEL disinfectant, effective against M. tuberculosis. Hierarchy: Sterilant (kills all including spores) > High-level (kills all except some spores) > Intermediate-level (kills M. tuberculosis, vegetative bacteria, most viruses/fungi) > Low-level (most bacteria, some viruses, NOT M. tuberculosis).

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