MDLB 1221 QUESTIONS AND ANSWERS A+ GRADED. Buy
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chain of infection
infectious agent, reservoir, exit pathway, mode of transmission, entry pathway,
susceptible host
How to break the chain of infection
Stopping infections at the source (hand hygiene, stress management, good nutrition,
adequate rest), preventing contact with substances from exit pathways (use of PPE),
eliminating means of transmission (proper PPE), blocking exposure to entry pathways
(proper PPE), and eliminating the susceptibility of potential host (immunization)
Infectious agent
Or causative agent - a pathogenic microbe causing infection
Reservoir
A place where microbes can survive, grow or multiply (food, water, equipment, etc)
Exit pathway
a way an infectious agent is able to leave a reservoir host (nose, eyes, mouth
secretions, blood, body fluids)
Means of transmission
direct contact, indirect contact (contaminated surfaces), airborne route, droplet (mucous
membranes), vector (animal), or vehicle (ingested)
Entry pathway
way an infectious agent is able to enter a susceptible host (orifices, breaks in skin,
mucous membranes)
susceptible host
a person likely to get an infection or disease, usually because body defenses are weak
Anatomical Immune system
The initial line of defence against pathogenic organisms - includes the skin which acts
as a physical barrier, and mucous membranes which wash away and repel
microorganisms with continuous secretions
Internal immune system
At the molecular level, the body possesses cells with specialized function - some cels
will engulf and digest microorganisms via phagocytosis (triggers inflammation) and
certain cells in the blood and body tissues will produce antibodies to neutralize or
destroy invading MOs (and remain for future instances)
Quality Materials!
chain of infection
infectious agent, reservoir, exit pathway, mode of transmission, entry pathway,
susceptible host
How to break the chain of infection
Stopping infections at the source (hand hygiene, stress management, good nutrition,
adequate rest), preventing contact with substances from exit pathways (use of PPE),
eliminating means of transmission (proper PPE), blocking exposure to entry pathways
(proper PPE), and eliminating the susceptibility of potential host (immunization)
Infectious agent
Or causative agent - a pathogenic microbe causing infection
Reservoir
A place where microbes can survive, grow or multiply (food, water, equipment, etc)
Exit pathway
a way an infectious agent is able to leave a reservoir host (nose, eyes, mouth
secretions, blood, body fluids)
Means of transmission
direct contact, indirect contact (contaminated surfaces), airborne route, droplet (mucous
membranes), vector (animal), or vehicle (ingested)
Entry pathway
way an infectious agent is able to enter a susceptible host (orifices, breaks in skin,
mucous membranes)
susceptible host
a person likely to get an infection or disease, usually because body defenses are weak
Anatomical Immune system
The initial line of defence against pathogenic organisms - includes the skin which acts
as a physical barrier, and mucous membranes which wash away and repel
microorganisms with continuous secretions
Internal immune system
At the molecular level, the body possesses cells with specialized function - some cels
will engulf and digest microorganisms via phagocytosis (triggers inflammation) and
certain cells in the blood and body tissues will produce antibodies to neutralize or
destroy invading MOs (and remain for future instances)
