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18 Cards in this Set
- Front
- Back
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baseline/endemic
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amount of a particular disease that is usually present in a community
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Sporadic
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disease that occurs infrequently and irregularly
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Endemic
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constant presence and or usual prevalence of a disease or infectious agent in a population within a geographic area
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Hyperendemic
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persistent, high levels of disease occurrence
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Epidemic
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increase, often sudden, in the number of cases of a disease above what is normally expected in that population in that area
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Outbreak
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same as epidemic, often used for a more limited geographic area
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Cluster
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aggregation of cases grouped in a place and time that are suspected to be greater than the number expected
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Pandemic
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epidemic that has spread over several countries or continents, usually affecting large number of people
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Epidemic curves represent
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new cases over time
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Epidemic curves affected by
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incubation period, infectivity, proportion of susceptible animals, distance between animals
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SIR model
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susceptible, infectious, recovered
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Reproductive number (R0)
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mean number of individuals directly infected by an infectious case through the total infectious period
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R0=
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pcd
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p=
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probability of transmission/contact
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c=
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contacts/time
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d=
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duration of infectiousness
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R>1
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epidemic
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R=1
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endemic
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