The Types and Transmission of Pathogens

The Types and Transmission of Pathogens

1. Bacteria

   • Tuberculosis (TB)
   • Bacterial Meningitis
   • Ring Rot (Potatoes/Tomatoes)

2. Virus

   • HIV/AIDS (Humans)
   • Influenza (Animals)
   • Tobacco Mosaic Virus (Plants)

3. Fungi

   • Black Sigatoka (Bananas)
   • Ringworm (Cattle)
   • Athletes Foot (Humans)

4. Protoctista

   • Malaria
   • Potato/Tomato Blight

5. Direct Transmission

   • Vertical
     • Pathogen passes from Mother to child through placenta
       • HIV
   • Horizontal
     • Sexual Intercourse
       • HIV
     • Touch
       • Athletes foot
   • Droplet Infection
     • TB

6. Indirect Transmission

   • When one pathogen is passed to another via an intermediate (a vector)
   • Vectors can be air, water, food or another organism
   • Malaria
     • Vector is the mosquito
   • Potato/Tomato Blight
     • Spores carried in the air and water

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