Multiple Choice
In the chain of infection model, which of the following is NOT considered one of the standard links?
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25. Epidemiology
Introduction to Chain of Infection
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In the chain of infection, what is the first step in infection control to prevent disease transmission?
A
Administer antibiotics to the host
B
Treat symptoms after infection occurs
C
Identify the infectious agent (causative microorganism)
D
Sterilize all reusable medical equipment
Verified step by step guidance1
Understand the chain of infection, which includes several links: infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host.
Recognize that breaking any link in this chain can help prevent disease transmission.
Identify that the first and most crucial step in infection control is to identify the infectious agent (the causative microorganism), as this allows targeted interventions.
Once the infectious agent is identified, appropriate measures such as sterilization, disinfection, or isolation can be implemented to interrupt transmission.
Note that administering antibiotics or treating symptoms occurs after infection, so these are not preventive steps but rather therapeutic ones.
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