What is the method to visualize the elements that contribute to the spread of infection?

• A. Contaminant
• B. Baseline
• C. CFM
• D. Chain of infection

Answer: (D)

Visualizing how infection spreads is done with the chain of infection, a framework that maps the sequence from the infectious agent to a susceptible host. This model lays out the interconnected elements—infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host—so you can see how each link contributes to transmission. By visualizing these links, you can spot where interventions will break the chain, such as eliminating the source, blocking transmission, or strengthening host defenses. Other terms describe substances, references, or non-model concepts and don’t provide the linked, step-by-step view of spread that the chain of infection offers.