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  1. What is a Pathogen? 4 Types and How They Spread Disease - Healthline

  2. Pathogens: Types and How to Defend Against Them - Verywell Health

  3. Pathogens: Definition, types, diseases, prevention, and more

  4. All About Pathogens: Bacteria, Viruses, and More - WebMD

  5. Types of Pathogens and Their Effects on Human Health

  6. What Are Four Types Of Pathogens? | Essential Insights

  7. Communicable diseases - AQA Pathogens - BBC

  8. Types of Pathogens and Their Unique Characteristics

  9. Types of Pathogens - Viruses, Bacteria, Fungi, Protozoans and …

  10. What are Pathogens? An Overview of Pathogens and their Types

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