Podcast
Questions and Answers
Which of the following is NOT a component of the chain of infection?
Which of the following is NOT a component of the chain of infection?
- Environmental factors (correct)
- Etiologic agent
- Method of transmission
- Host
What is the MOST significant factor that determines whether exposure to bacteria will lead to an infectious disease?
What is the MOST significant factor that determines whether exposure to bacteria will lead to an infectious disease?
- The type of bacteria
- The environmental conditions
- The number of bacteria encountered
- The integrity of the host's defenses (correct)
What is the MOST likely reason why opportunistic infections occur in compromised patients?
What is the MOST likely reason why opportunistic infections occur in compromised patients?
- Compromised patients are exposed to more virulent bacteria.
- Compromised patients are more likely to be exposed to unsanitary environments.
- Compromised patients have weakened immune systems. (correct)
- Compromised patients have a genetic predisposition to bacterial infections.
Which of the following scenarios is MOST likely to lead to an opportunistic bacterial infection?
Which of the following scenarios is MOST likely to lead to an opportunistic bacterial infection?
Which factor has the LEAST influence on whether a bacteria will cause disease?
Which factor has the LEAST influence on whether a bacteria will cause disease?
Flashcards
Chain of Infection
Chain of Infection
The sequence of events leading to infection involving an etiologic agent, transmission, and a host.
Etiologic Agent
Etiologic Agent
The microorganism (bacteria, virus, etc.) that causes disease.
Method of Transmission
Method of Transmission
The way infectious agents are spread to a host (e.g., direct contact, airborne).
Host
Host
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Opportunistic Infectious Diseases
Opportunistic Infectious Diseases
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Study Notes
Chain of Infection
- The chain of infection involves three key components: the infectious agent, transmission method, and the susceptible host.
- Exposure to bacteria is frequent, and typically the host's defenses prevent infection.
- Compromised hosts (weakened defenses) are more susceptible.
- Bacteria entering the bloodstream can cause infections in these compromised individuals, e.g., after surgical procedures, catheter use, or other medical interventions.
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