2015
DOI: 10.1111/irv.12330
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Influenza surveillance in Europe: comparing intensity levels calculated using the moving epidemic method

Abstract: ObjectivesAlthough influenza-like illnesses (ILI) and acute respiratory illnesses (ARI) surveillance are well established in Europe, the comparability of intensity among countries and seasons remains an unresolved challenge. The objective is to compare the intensity of ILI and ARI in some European countries.Design and settingWeekly ILI and ARI incidence rates and proportion of primary care consultations were modeled in 28 countries for the 1996/1997–2013/2014 seasons using the moving epidemic method (MEM). We … Show more

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Cited by 117 publications
(143 citation statements)
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“…A recent comparison of influenza intensity levels in Europe estimated a similar definition (6.4 influenza-diagnosis cases/wk/100,000 population) for the 2008–09 winter influenza season in Sweden ( 8 ). Peak timing was defined as the date when the highest number of influenza-diagnosis cases were documented in the countywide electronic patient record.…”
Section: Methodsmentioning
confidence: 99%
“…A recent comparison of influenza intensity levels in Europe estimated a similar definition (6.4 influenza-diagnosis cases/wk/100,000 population) for the 2008–09 winter influenza season in Sweden ( 8 ). Peak timing was defined as the date when the highest number of influenza-diagnosis cases were documented in the countywide electronic patient record.…”
Section: Methodsmentioning
confidence: 99%
“…This limit was determined by inspecting the epidemic curves of previous local influenza epidemics in the learning dataset. In a recent comparison of influenza intensity levels in Europe (Vega et al 2015), a similar definition (6.4 influenza-diagnosis cases/week/100,000) was estimated for the 2008-09 winter influenza season in Sweden. The definition of when an epidemic ends was set to the inter-epidemic (i.e., the period between two epidemics) influenza-diagnosis case level for the setting where the nowcasting method is applied.…”
Section: Definitionsmentioning
confidence: 93%
“…To evaluate the performance of the peak intensity function, the epidemic threshold and intensity level categories (nonepidemic, low, medium, high, and very high) were used ( Table 2). These categories and their limits were determined in a recent comparison of influenza intensity levels in 28 European countries, including Sweden (Vega et al 2015). A prediction was considered successful if the predicted peak intensity fell into the same category as the actual peak intensity, otherwise the prediction was considered unsuccessful.…”
Section: Metrics and Interpretationmentioning
confidence: 99%
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