The Chain of Infection
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The Chain of Infection







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The Chain of Infection. As healthcare professionals, it is important to understand two facts about infection :. The various ways infection can be transmitted. 2. The ways the infection chain can be broken. There are six links in the chain of infection:. 1st - The Infectious Agent.
The Chain of Infection

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Slide 1

The Chain of Infection

Slide 2

As healthcare professionals, it is important tounderstand two facts about infection:

Slide 3

The various ways infection can be transmitted.

2. The ways the infection chain can be broken.

Slide 4

There are six links in the chain of infection:

Slide 5

1st - The Infectious Agent

- Any disease-causing microorganism (pathogen)

Slide 6

2nd - The Reservoir Host

-The organism in which the infectious microbes reside

Slide 7

What are “Carrier Hosts?”

Hosts that do not show any outward signs or symptoms of a disease, but are still capable of transmitting the disease are known as carriers.

Slide 8

3rd - The Portal of Exit

-Route of escape of the pathogen from the reservoir

Examples: respiratory secretions, blood exposure, breaks in skin

Slide 9

4th - The Route of Transmission

-Method by which the pathogen gets from the reservoir to the new host

Slide 10

Transmission may occur through:

Direct Contact

Slide 11

Air

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Insects

Slide 13

5th - The Portal of Entry

-Route through which the pathogen enters its new host

Slide 14

Respiratory System

inhalation

Slide 15

Gastrointestinal System

ingestion

Slide 16

Urinary & Reproductive Tracts

Sexual contact

Slide 17

Breaks in Protective Skin Barrier

Slide 18

6th - The Susceptible Host

-The organism that accepts the pathogen

The support of pathogen life and its reproduction depend on the degree of the host’s resistance.

Slide 19

Organisms with strong immune systems are better able to fend off pathogens.

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Organisms with weakened immune systems are more vulnerable to the support and reproduction of pathogens.

Slide 21

How to interrupt the chain of infection:

-The essential part of patient care and self-protection.

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1. Pathogen Identification

-Identification of infectious agent and appropriate treatment

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2. Asepsis and Hygiene

-Potential hosts and carriers must practice asepsis and maintain proper personal hygiene

Slide 24

3. Control Portals of Exit

-Healthcare personnel must practice standard precautions:

Slide 25

Control body secretions and wash hands according to protocol.

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4. Prevent a Route of Transmission

-Prevent direct or indirect contact by:

Proper handwashing

Disinfection & sterilization techniques

Isolation of infected patients

Not working when contagious

Slide 27

5. Protect Portal of Entry

-Healthcare professionals must make sure that ports of entryare not subjected to pathogens.

(nose, mouth, eyes, urinary tract, open wounds, etc.)

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6. Recognition of Susceptible Host

-Healthcare professionals must recognize and protect high-risk patients.

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  • Cancer Patients

  • AIDS Patients

  • Transplant Patients

  • Infants

  • Elderly Patients

Slide 30

“Remember--breaking the chain of

infection is the responsibility

of each healthcare professional.”


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