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Questions and Answers
What typically persists in a population once the morbidity of a disease is very low?
What typically persists in a population once the morbidity of a disease is very low?
- Increased morbidity rates
- Total immunity in the population
- A residual infection (correct)
- Complete eradication of the disease
Which of the following factors can cause a resurgence of a disease after its morbidity has been lowered?
Which of the following factors can cause a resurgence of a disease after its morbidity has been lowered?
- Unreachable geographical areas
- Disturbance in the agent-host-environment equilibrium (correct)
- Permanent immunity in individuals
- Complete elimination of vectors
What does the interplay between the agent, host, and environmental components represent when morbidity is low?
What does the interplay between the agent, host, and environmental components represent when morbidity is low?
- A complete lack of transmission
- A deadly outbreak
- A state of equilibrium (correct)
- A state of active transmission
What might hidden foci of infection indicate in a population with low disease morbidity?
What might hidden foci of infection indicate in a population with low disease morbidity?
Which of the following best describes the impact of residual infections on disease control efforts?
Which of the following best describes the impact of residual infections on disease control efforts?
Flashcards
Residual Infection
Residual Infection
The remaining cases of a disease after a significant decrease in its prevalence.
Agent-Host-Environment Equilibrium
Agent-Host-Environment Equilibrium
A state of balance between the disease-causing agent, the host (person), and the environment.
Foci of Infection
Foci of Infection
Hidden sources of infection that can easily re-emerge, causing disease outbreaks.
Disease Equilibrium Disruptors
Disease Equilibrium Disruptors
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Disease Re-emergence Risk
Disease Re-emergence Risk
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Study Notes
Disease Eradication
- When disease morbidity is very low, a "residual" infection remains in the population.
- This creates a state of equilibrium among the disease agent, host, and environment.
- Despite low morbidity, hidden infection foci, unrecognized transmission methods, and resistance in the vector or organism persist.
- These elements can re-emerge when the agent-host-environment equilibrium is disrupted.
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