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Develop Hypotheses

Agent / host / environement triad = Chain of transmission

  • Agent / Host / Environment = agent capable of causing disease and its source + host or persons susceptible to agent + environment allowing them to get together
    • Infectious groups: viruses, bacteria, protistans (protozoa), fungi, animals (worms)
  • Testable - hypothesis must be in a form that is testable
  • Current knowledge and background - it should be based upon current knowledge and be updated or modified as new information is uncovered !!!

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