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Understanding Infectious Diseases: How They Spread and How to Prevent Them

This educational overview explains infectious diseases, which are illnesses caused by pathogens that can spread from one organism to another. It categorizes pathogens into bacteria, viruses, and fungi, detailing common diseases like E. coli, the flu, and athlete's foot. The document emphasizes modes of transmission, including person-to-person contact, contaminated objects, and animal bites, and provides preventive measures such as handwashing, cooking food thoroughly, and maintaining hygiene. Learn how to protect yourself and others from these illnesses.

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Understanding Infectious Diseases: How They Spread and How to Prevent Them

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Presentation Transcript

  1. Infectious Disease 8thGrade Health Class Jim Brennan

  2. What is Infectious Disease? • Anything that can spread form organism to organism Tell me I want to know!

  3. How do they spread? • Caused by pathogens • Which are organism that can cause disease Microscope view of a pathogen

  4. Human Pathogens

  5. Bacteria • One celled organism • Produce toxins (poisons) • Diseases caused by bacteria • E-coli • Lyme’s Disease • Staph Infections

  6. Pictures of Staph Clean your cuts or this can happen

  7. Viruses • Much smaller than bacteria • Can only reproduce if inside a cell Mom I can’t go to school

  8. Virus • Diseases caused by a virus • The Flu • Common Cold • Chicken Pox • Human Immunodeficiency Virus

  9. Fungus • Molds, Yeasts • Common Fungal disease • Athletes Foot Keep your feet dry

  10. Sources of Pathogens

  11. Person to Person • Through direct contact • Kissing, shaking hands, any sexual act • Through Indirect contact • Sneezing, coughing

  12. Preventing Person to Person Transmission • Wash Hands Frequently • Use Soap and water • Sneeze into your arm • Wear a condom Do this for 20+ Seconds

  13. Contaminated Object • Any object that you can touch/ingest

  14. Preventing Contaminated Object Transmission • Wear personal protective barriers • Gloves • Cook food thoroughly • Filter your water • Disinfect all surfaces daily

  15. Animal Bite • Any bite from an animal can transmit a disease • Common Animal bite related diseases • Rabies- Dogs and Raccoons • Malaria- Mosquitoes • Lyme’s Disease- Deer Tick

  16. Rabies • Passed from the biting animal through saliva • Bacteria is in the saliva • Causes brain Inflammation

  17. Lyme’s Disease • Bacteria lives in wild rodents • Passed to humans by tick bites • Primarily passed by Deer Ticks • Hard to see with the naked eye • Lyme Symptoms

  18. Malaria • Is a disease carried by mosquitoes • Is only found in hot wet places • No risk of Malaria transmission to you

  19. Malaria Map

  20. Environment • Caused by alterations to the environment • Usually chemicals in soil or water • Can cause death or serious illness • Can be prevented • Keep chemicals away from water and soil

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