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Chain of Infection

Chain of Infection. Ms. Kelly 8 th Grade Health. Journal:. Based on what you read in the “Chain of Infection” article, in your own words, describe why and how we get sick. The Six Links…. Pathogen Reservoir Place of Exit Method of Transmission Port of Entry Susceptible Host.

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Chain of Infection

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  1. Chain of Infection Ms. Kelly 8th Grade Health

  2. Journal: Based on what you read in the “Chain of Infection” article, in your own words, describe why and how we get sick.

  3. The Six Links… • Pathogen • Reservoir • Place of Exit • Method of Transmission • Port of Entry • Susceptible Host

  4. Reservoir • The place for a pathogen to live and grow • Direct transmission: Human or animal body (host) • Indirect transmission: Contaminated food or water Animal/insect Infected soil

  5. Place of Exit • Ways pathogens escape the reservoir • Mouth • Nose • Broken skin

  6. Method of Transmission • A way to get to a new host • Directly • Body fluids (i.e. blood, secretions) • Indirectly • Intermediate hosts (i.e. toothbrushes, animals, drinking fountains, food)

  7. Port of Entry • Ways to enter a new host • Broken skin • Mouth • Nose • Eyes • Genitals • Insect bites

  8. Susceptible Host • Those that have little (if any) resistance to the pathogen and thus, lack the ability to fight them off • Carriers: Those who carry germ, but show no symptoms; can spread disease, but often do so unknowingly

  9. Do all 6 links need to be connected in order for a disease to be transmitted? YES

  10. …if even ONE link is broken, an infection will not occur!

  11. Break the Chain… • Kill the pathogen • Prevent contact • Prevent its escape • Prevent Transmission • Block the Ports • Resistant Host

  12. Kill Pathogen • If you kill the pathogen, you stop it from spreading • Method • Antibiotics or other medications • Wash hands

  13. Prevent Contact • By preventing things from coming in contact with an infected source, the pathogen has no place to escape to • Method: • Quarantine/ isolate those with disease

  14. Prevent Escape • If the pathogens cannot get out of its host, the disease cannot spread • Method: • Cover your mouth when you sneeze • Wear a band-aid to cover wounds

  15. Prevent Transmission • By not giving pathogens a means to travel, we can stop the spread • Method • Kill/control infected animals/insects • Ensure proper treatment of sewage • Chlorinate drinking water

  16. Block the Ports • If you do not have ways for pathogens to get into a new host, they cannot infect • Method • Cover wounds • Do not eat “shady” food

  17. Resistant Host • By making smart choices about your health and developing a strong immune system, your body can fight off pathogens without you ever feeling sick • Method • Exercise • Eat well-balanced diet • Get immunizations

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