Agent Host Environment Triangle
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Agent host environment triangle It is important to understand the context in terms of the agent host and environment in order to develop optimal environmental intervention strategies.
Agent host environment triangle. Interaction between host and agent. The triad consists of an external agent a susceptible host and an environment that brings the host and agent together. An agent could be some form of bacteria virus fungus or host. They are less helpful in predicting when and why outbreaks arise.
The triangle has three corners called vertices. A number of models of disease causation have been proposed. The epidemiological triad in the case of many communicable diseases such as malaria the agent can only reach the host via a third party called the vector figure 2. Among the simplest of these is the epidemiologic triad or triangle the traditional model for infectious disease.
The vector is. Agent or microbe that causes the disease the what of the triangle host or organism harboring the disease the who of the triangle environment or those external factors that cause or allow disease transmission the where of the triangle. We would make some prediction based on the epidemiological triangle fig 1 recognising the three main factors agent environment and host in the pathogenesis of disease. Epidemiological triangle 3 agent host environment disease is caused by an agent but its distribution signs and severity are also influenced by host and environmental factors a vector is not needed in some disease what do we.
Agent or microbe that causes the disease the what of the triangle 2. Introduction on june 11 2009 the who declared the h1n1 influenza virus a pandemic. Agent host and environment. The triad consists of an external agent a susceptible host and an environment that brings the host and agent together.
2 if we can control any two of the main factors we would prevent the occurrence of a communicable diseases. Agent host and environmental factors provide an approach to elucidating causes of incident outbreaks of infectious disease.
The Epidemiology Triad Consists Of An External Agent And A Host
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