ENH 122 Lecture Notes - Lecture 13: Data Quality, Influenza A Virus Subtype H3N2, Influenza A Virus Subtype H5N1
22 Apr 2018
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Document Summary
Pandemic epidemic occurring worldwide, or over a very wide area, crossing international boundaries and a ecting a large number of people (dictionary of epidemiology, 2009) Worldwide spread of a new disease (who de nition) In uenza pandemic when a new in uenza virus emerges and spreads around the world, and most people do not have immunity. In the past it has been from animal u viruses. Epidemic a widespread occurrence of an infectious disease in a community at a particular time. Recent increase in amount or virulence of the agent. Recent intro of the agent into a new setting. Enhanced mode of transmission so that more susceptible persons are exposed. Change in the susceptibility of a host repose to the agent. Factors that increase host exposure or involve intro through new portals of entry. To constitute a public health risk to other states through the international spread of disease; and. To potentially require a coordinated international response.
