Write short notes on epidemiological triad?
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The epidemiological triad: Interaction of host, environment, and pathogen determine disease and pathogen ecology. Some factors influencing the components of the triad are shown for the current epidemiological triad (top panel).
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traditional model of infectious disease causation, known as the Epidemiologic Triad is depicted in Figure 2. The triad consists of an external agent, a host and an environment in which host and agent are brought together, causing the disease to occur in the host. A vector, an organism which transmits infection by conveying the pathogen from one host to another without causing disease itself, may be part of the infectious process.
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