Chain Of Transmission

Question 1

What are the three chains?

Answer 1

1. Source of infectious agent
2. Mode of transmission
3. Susceptible host

Question 2

Source of infectious agent

Answer 2

1. A pathogen must be present
2. Virulence - how severe the pathogen is

Question 3

Mode of transmission info

Answer 3

1. Must successfully spread from one host to another
2. If transmitted from person to person, it is known as communicable or contagious

Question 4

Modes of transmission

Answer 4

1. Direct contact
2. Indirect contact
3. Droplet
4. Airborne

Question 5

Susceptible host

Answer 5

1. Resistance - the body’s ability to prevent infection
2. Susceptibility - host defended are unable to prevent infection