🦠microbiology review

Passive carrier

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

A passive carrier is an individual or organism that harbors a pathogen without showing symptoms of the disease and can transmit it to others. This type of carrier plays a crucial role in the spread of infections.

5 Must Know Facts For Your Next Test

  1. Passive carriers can unknowingly spread disease because they do not exhibit symptoms.
  2. Healthcare workers can become passive carriers if they do not follow proper hygiene protocols.
  3. Passive carriers are different from active carriers, who show symptoms of the disease.
  4. Identifying passive carriers is challenging but essential for controlling outbreaks.
  5. Common pathogens associated with passive carriers include bacteria, viruses, and parasites.

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