Explain triad model of epidemiology.
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a traditional model of infectious desease causation,, known as Epidemiologic traid is depicted in the figure. the triad consist of external agent, a host an environment in which host and agent are brought together, causing the disease to occur in the host....
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The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together. In this model, disease results from the interaction between the agent and the susceptible host in an environment that supports transmission of the agent from a source to that host.
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