Communicable
Diseases
Samuel Kifuso
, What are Communicable Diseases
Communicable are diseases spread from one person to another or from
an animal to a person.
The spread often happens via airborne viruses or bacteria, but also
through blood or other bodily fluid.
, Concepts In Communicable Diseases
The foundational model consists of three components required for a
disease to spread: the infectious agent, the susceptible host, and the
environment. (Epidemiologic triad)
Chain of Infection:
This model details the six specific factors that must be present for a
communicable disease to spread from one person to another.
•Infectious Agent: The pathogen (e.g., virus, bacteria, fungus)
causing the disease.
, Concepts In Communicable Diseases cont..
•Reservoir: The natural habitat of the infectious agent (e.g.,
person, animal, or object).
•Route of Exit: How the pathogen leaves the reservoir (e.g.,
through bodily fluids).
Mode of Transmission: How the pathogen moves from the
reservoir to the host.
•Route of Entry: How the pathogen enters the host's body.
•Susceptible Host: An individual who is vulnerable to the
infection.
Diseases
Samuel Kifuso
, What are Communicable Diseases
Communicable are diseases spread from one person to another or from
an animal to a person.
The spread often happens via airborne viruses or bacteria, but also
through blood or other bodily fluid.
, Concepts In Communicable Diseases
The foundational model consists of three components required for a
disease to spread: the infectious agent, the susceptible host, and the
environment. (Epidemiologic triad)
Chain of Infection:
This model details the six specific factors that must be present for a
communicable disease to spread from one person to another.
•Infectious Agent: The pathogen (e.g., virus, bacteria, fungus)
causing the disease.
, Concepts In Communicable Diseases cont..
•Reservoir: The natural habitat of the infectious agent (e.g.,
person, animal, or object).
•Route of Exit: How the pathogen leaves the reservoir (e.g.,
through bodily fluids).
Mode of Transmission: How the pathogen moves from the
reservoir to the host.
•Route of Entry: How the pathogen enters the host's body.
•Susceptible Host: An individual who is vulnerable to the
infection.
