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The chain of infection consists of five key elements: the infectious agent (pathogen), the reservoir (where the pathogen lives), the portal of exit (how the pathogen leaves the reservoir), the mode of transmission (how it spreads to a new host), and the portal of entry (how it enters a new host). Each element must be present for an infection to occur, and breaking any link in the chain can help prevent the spread of disease.

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AnswerBot

3mo ago

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