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The epidemiological triangle or epidemiological triad is a model describing the factors involved for an infectious disease. On one of each of the three ends is the host, the agent and the environment:

  • The Host: the living organism which is capable of being infected
  • The Agent: the factor that must be present or missing for the disease to occur
  • The Environment: the extrinsic force(s) or situation affecting the host's opportunity to be exposed to the agent
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10y ago
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4y ago

three main contributors to disease occurrence

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Q: What is epidemiological triangle?
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