Pathogens

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  • Pathogens
    • Disease is a description of symptoms
      • suggests a malfunction which has an adverse affect on health.
    • to be a pathogen
      • resist the defences of host
      • colonise the tissue of a host
      • cause damage to host tissue
      • gain entry to a host
    • eg
      • bacteria
      • Fungi
      • virus
    • Transmission
      • penetrating an organisms interface with the environment
        • gas-exchange system
          • Influenza
          • Tuberculosis
          • bronchitus
        • Digestive system
          • cholera
          • Typhoid
      • Defences
        • mucous layer
        • Untitled
        • stomach acid
        • enzymes
    • causing disease
      • damaging host tissue (number)
      • producing toxins

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