Question

List the 5 categoriers the Chain of Infection.

Answer 1

In order for infection and disease to occur in an individual, a process involving six related components must occur. This process has been referred to as the “Chain of Infection.” The six steps or “links” in the chain are:
• Etiologic agent
• Reservoir
• Portal of Exit
• Mode of Transmission
• Portal of Entry
• Susceptible Host

Answer 2

There are seven categories of biological agents that can cause infectious diseases.Each one has its own particular characteristics.
Metazoa
Protozoa
Fungi
Bacteria
Rickettsia
Viruses
Prions