CHAIN OF INFECTION

Question 1

An invasion of pathogens or microorganisms into the body that are capable of producing disease.

Answer 1

Infection

Question 2

The invasion and reproduction of microorganisms in a body tissue that can result in a local or systemic
clinical response such as cellulitis, fever etc.

Answer 2

Infection

Question 3

Includes all of the practices used to prevent the spread of microorganisms
that could cause disease in a person.

Answer 3

Infection Control

Question 4

practices help to protect clients and healthcare providers from disease by reducing and/or eliminating sources of infection.

Answer 4

Infection control

Question 5

The six links (I/PREMES)

Answer 5

• Pathogen (INFECTIOUS AGENT)
  • Reservoir
  • Place of Exit
  • Method of Transmission
  • Port of Entry
  • Susceptible Host

Question 6

The place for a pathogen to live and grow

Answer 6

Reservoir

Question 7

Human or animal body (host)

Answer 7

Direct transmission:

Question 8

Contaminated food or water Animal/insect
Infected soil

Answer 8

Indirect transmission

Question 9

Ways pathogens escape the reservoir
(Mouth,Nose, Broken skin)

Answer 9

Place of Exit

Question 10

Away to get to a new host

Answer 10

Method of Transmission

Question 11

MOT - Body fluids (i.e. blood, secretions)

Answer 11

MOT - Directly

Question 12

MOT- Intermediate hosts (i.e. toothbrushes, animals, drinking fountains, food)

Answer 12

MOT- Indirectly

Question 13

Ways to enter a new host
– Broken skin
– Mouth
– Nose
– Eyes
– Genitals
– Insect bites

Answer 13

Port of Entry

Question 14

Those that have little (if any) resistance to the pathogen and thus, lack the ability to fight them
off

Answer 14

Susceptible Host

Question 15

Those who carry germ, but show no signs or symptoms; can spread disease, but often do
so unknowingly

Answer 15

Carriers

Question 16

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

Answer 16

YES

Question 17

T/F

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

Answer 17

TRUE

Question 18

Ways to break the chain

Answer 18

• Kill the pathogen
  • Prevent contact
  • Prevent its escape
  • Prevent Transmission
  • Block the Ports
  • Resistant Host

Question 19

If you kill the pathogen, you stop it from spreading

Answer 19

Kill pathogen

Question 20

Methods of killing pathogens

Answer 20

• Antibiotics or other medications
  – Wash hands

Question 21

By preventing things from coming in contact with an infected source, the pathogen has no place to escape to

Answer 21

Prevent Contact

Question 22

Methods in Preventing Contact

Answer 22

Quarantine/ isolate those with disease

Question 23

If the pathogens cannot get out of its host, the disease cannot
spread

Answer 23

Prevent Escape

Question 24

Prevent Escape Methods:

Answer 24

• Cover your mouth when you sneeze
  – Wear a band-aid to cover wounds

Question 25

By not giving pathogens a means to travel, we can stop the spread

Answer 25

Prevent Transmission

Question 26

Prevent Transmission Methods:

Answer 26

• Kill/control infected animals/insects
  – Ensure proper treatment of sewage
  – Chlorinate drinking water

Question 27

If you do not have ways for pathogens to get into a new
host, they cannot infect

Answer 27

Block the Ports

Question 28

Block the Ports Methods:

Answer 28

Cover wounds
– Do not eat “shady” food

Question 29

By making smart choices about your health and developing a strong immune system, your body can fight off pathogens without
you ever feeling sick

Answer 29

Resistant Host

Question 30

Resistant Host Methods:

Answer 30

• Exercise
  – Eat well-balanced diet
  – Get immunizations