epidemic curve

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Related to epidemic curve: point source epidemic, Outbreak Investigation

ep·i·dem·ic curve

a graph in which the number of new cases of a disease is plotted against an interval of time to describe a specific epidemic or outbreak.

epidemic curve

A chart or graph in which the number of new cases of an illness is plotted over time.
See also: curve


a line that is not straight; the line representing varying values in a graph.

area under moment curve
plasma drug concentration × time after dosing versus time after drug administration.
area under the curve
the area under a plasma concentration versus time curve. A measure of drug absorption.
epidemic curve
a graphical representation showing the number of new cases of the disease plotted against time. A decision on when the new infection rate creates an epidemic varies with the disease and the circumstances. The rate would need to be clearly in excess of its expected frequency.
fitted curve
the theoretical frequency distribution whose closeness of fit to the subject data is under test.
freehand curve
a line drawn in by hand on a scattergram to establish the relationship between two variables.
frequency curve
a curve representing graphically the probabilities of different numbers of occurrences of an event.
logarithmic curve
the curve which demonstrates the straightline relationship between two variables when both of them are scaled as logarithms.
log dose-response curve
the standard way of presenting pharmacological data about a drug. The response is plotted against dose on a semilogarithmic graph. It has the advantage that a wide range of dose rates can be entered on the one graph.
plasma concentration-time curve
the plasma concentration of a drug plotted against time.
semilogarithmic curve
as for logarithmic curve except that only one of the variables is scaled as a logarithm. See also logarithmic relationship.
sigmoid curve
an S-shaped curve. A common curve in biological distributions.
survivorship curve
a graphic presentation of a life table. Obviously the proportion of survivors decreases with advancing age of the group.
vertebral curve
the downward curve of the thoracolumbar region and that of the cervical region in some animals.


a level of disease occurrence in an animal population which is significantly greater than usual; only occasionally present in the population, widely diffused and rapidly spreading. The disease is clustered in space and time. The word has common usage in veterinary science in preference to the more accurate, epizootic.

common source epidemic
see point epidemic (below).
epidemic curve
see epidemic curve.
epidemic diarrhea of infant mice
see murine epizootic diarrhea.
epidemic hyperthermia
poisoning by Neotyphodium (Acremonium) coenophialum; called also fescue summer toxicosis.
multiple event epidemic
when the epidemic begins at about the same time in a number of places, e.g. when a poisoned batch of feed is supplied to a number of farms.
point epidemic
when the epidemic begins at one central point, with a large number of animals coming in contact with the source over a short time; a very rapid form of spread with a number of cases presenting with the same stage of the disease at the one time, indicating the single source of the pathogen.
propagated epidemic, propagative epidemic, propagating epidemic
outbreaks in which the disease propagates in one or more initial cases and then spreads to others, a relatively slow method of spread.
epidemic tremor
epidemic typhus
see rickettsiaprowazeki.
References in periodicals archive ?
clinical cases, hospitalizations, or deaths) in the epidemic curve (see Equations 2a, 2b below).
The epidemic curve based on laboratory-confirmed cases generally lagged behind the time series of these syndromic indicators by 1-2 weeks.
Epidemic curve began on May 18, 2007 and reached at peak on June 6, 2007 after that it declined.
Based on the epidemic curve above, if it were then to take another two weeks to establish an effective working relationship between the orders of government, the country would face a rapid rise in the number of cases and an outbreak that it is no longer possible to control at its source.
It has been predicted that the HIV epidemic will be marked by an elongated epidemic curve showing several distinct peaks rather than a classical bell-shaped curve (Anderson, 1996).
If the epidemic curve in 2003 follows a polynomial distribution, additional measures may need to be taken to limit human WNV exposure in Greene County.
an epidemic curve that graphically depicts the outbreak and investigation and changes as the case study progresses
Besides the downward slope of the epidemic curve, another major factor signaling the sea change in gay men's experience of AIDS has been "the influx into gay community spaces of large numbers of young men with vastly different understandings of the epidemic" from their elders.
The epidemic curve [ILLUSTRATION FOR FIGURE 1 OMITTED] shows date and time of onset of symptoms among ill students, dormitory food staff, and central kitchen food staff.
The epidemic curve shows a few sequential cases during the summer with an increasing incidence occurring in the autumn school semester.

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