Certified Rhythm Analysis Technician (CRAT) Practice Exam 2025 – All-in-One Study Guide for Exam Success!

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What is the proper sequence of the chain of infection?

Means of transmission, susceptible host, source

Source, means of transmission, susceptible host

The proper sequence of the chain of infection begins with the source, which refers to the pathogen's initial location or the individual from which the infection spreads. Following the source, the means of transmission describes how the infection is spread, such as through direct contact, airborne transmission, or vector-borne methods. Finally, the susceptible host is the individual who is at risk of contracting the infection due to various factors like immunity, age, health status, etc.

Understanding this sequence is crucial in infection control as it helps identify points where interventions can break the chain, thereby preventing disease spread. Focusing on the correct order emphasizes the logical flow of infection dynamics, making it easier to implement effective control measures.

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Susceptible host, means of transmission, source

All of the above

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