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Chain of Infection Model

Chain of Infection Model. Chapter 13. Chain of Infection. Identify links (Ex.) How to break the links. 1. Causative Agent. Pathogen (See types of pathogens) Tx depends on type of pathogen Bacteria Antibiotic Virus Rest Protozoa Anti protozoa

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Chain of Infection Model

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  1. Chain of InfectionModel Chapter 13

  2. Chain of Infection • Identify links (Ex.) • How to break the links

  3. 1. Causative Agent • Pathogen (See types of pathogens) • Tx depends on type of pathogen • Bacteria Antibiotic • Virus Rest • Protozoa Anti protozoa • Fungal Antifungal

  4. 2. Reservoir • Where the pathogens live • Ex. = Human body, animals, environment • Pathogens can live on surfaces from a couple of minutes to a few hours

  5. 3. Portal of Exit • A way of escape and spread • Can leave the reservoir by way of saliva, blood, open skin, draining wound

  6. 4. Mode of Transmission • Way in which pathogen is transmitted • Contaminated hands are the most common mode

  7. 5. Portal of Entry • A way to enter the new reservoir • Ex. = Break in the skin, mouth, nose, eyes

  8. 6. Susceptible Host • Vulnerable human • What lowers the immune system? • Not enough sleep • Stress • Malnutrition • Impaired immune system • Recent transplant • Post surgery • Cancer pts.

  9. Example – Identify the 6 links • The FDA recalled jars of peanut butter from 7 states because of Salmonella. People who consumed the contaminated peanut butter developed N/V with a high fever. • All jars were traced back to a plant in Georgia. • Upon investigation, the plant failed to repair a leaky roof which was above the assembly line with open jars of peanut butter ready to be capped and shipped.

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