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Which one of the following statements about spores and disinfectants is correct?

  • A.Only high-level agents are expected to kill spores
  • B.All disinfectants kill spores given enough contact time
  • C.Spores are killed by low-level agents but not by heat
  • D.No chemical agent has any effect on spores

Answer: A

Sporicidal activity is the defining feature of the high-level category, and intermediate and low-level agents are not credited with it at all. Some high-level agents, given prolonged contact, are accepted as chemical sterilants.

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