Life cycle of a Pathogen

Question 1

Outline the 7 steps of the generic life cycle of a pathogen.

Answer 1

1. Infected host reservoir.
2. Site for replication of infectious agent.
3. Portal of exit.
4. Some infectious diseases have another possible reservoir.
5. Mode of transmission.
6. Portal of entry.
7. Suscetiple host.

Question 2

What are 3 examples of ‘portals of entry’?

Answer 2

1. Skin.
2. Mucous membranes.
3. Respiratory system.

Question 3

What are 3 examples of ‘portals of exit’?

Answer 3

1. Bite.
2. Digestion (elimination).
3. Respiratory system (coughing and sneezing)