Dept. of Health Research Govt. of India
World Health Organization
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Outbreaks

Outbreaks constitute unique events during which much can be learned about effective methods to prevent diseases. In the specific case of infectious diseases, outbreaks usually reflect a change in the relationship between (1) the host, (2) the agent and (3) the environment. All these mechanisms must be understood to propose adequate control measures. Understanding these mechanisms require a systematic methodological approach.