Chain of infection/ Stages of transmission

Question 1

Step 1; Source of infectious agent

Answer 1

pathogen must be present

Question 2

Step 2: Mode of Transmission

Answer 2

there must by a method which the pathogen can spread from one hosts to another. This can be via direct/indirect contact, droplet, airborne

Question 3

Step 3: Susciptible Host

Answer 3

babies, elderly, chronic illness, compromised immunity, cancer patient