Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.

The German Infection Protection Act requires notifying certain cases of infectious diseases to local health departments (LHD) in Germany. LHDs transmit notifications meeting case definitions to the national health authority, where the proportion of discarded notifications is not known. The proportio...

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Main Authors: Benjamin Blümel, Michaela Diercke, Daniel Sagebiel, Andreas Gilsdorf
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0212908
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author Benjamin Blümel
Michaela Diercke
Daniel Sagebiel
Andreas Gilsdorf
author_facet Benjamin Blümel
Michaela Diercke
Daniel Sagebiel
Andreas Gilsdorf
author_sort Benjamin Blümel
collection DOAJ
description The German Infection Protection Act requires notifying certain cases of infectious diseases to local health departments (LHD) in Germany. LHDs transmit notifications meeting case definitions to the national health authority, where the proportion of discarded notifications is not known. The proportion of discarded cases at the level of LHDs can be expressed as the positive predictive value (PPV) of the notification system. The PPV can be used to assess the efficiency of the system. We quantified the proportion of discarded notifications to calculate the PPV of the German notification system at the level of LHDs using electronic notification data from Berlin LHDs from 2012. We also analysed reasons for discarding notifications by reviewing notification forms. Data was available from eight LHDs (67%) receiving 10,113 notifications in 2012. Overall PPV was 89% (minimum-maximum = 77-97% across LHDs) and ranging from 30% (Hepatitis B) to 99% (Rotavirus). Of 166 individual investigation forms 84% were on hepatitis B or C cases, most of them discarded because of previously diagnosed chronic disease. LHDs investigate many notifications that do not lead to public health action and useful surveillance data leading to inefficient use of resources. Adaptation of case definitions or the legal framework concerning notifications may increase the efficiency of the notification system and lead to better use of data from notified cases.
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spelling doaj.art-bf878a52081f456082f2bf0c899554e42022-12-21T19:28:56ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01142e021290810.1371/journal.pone.0212908Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.Benjamin BlümelMichaela DierckeDaniel SagebielAndreas GilsdorfThe German Infection Protection Act requires notifying certain cases of infectious diseases to local health departments (LHD) in Germany. LHDs transmit notifications meeting case definitions to the national health authority, where the proportion of discarded notifications is not known. The proportion of discarded cases at the level of LHDs can be expressed as the positive predictive value (PPV) of the notification system. The PPV can be used to assess the efficiency of the system. We quantified the proportion of discarded notifications to calculate the PPV of the German notification system at the level of LHDs using electronic notification data from Berlin LHDs from 2012. We also analysed reasons for discarding notifications by reviewing notification forms. Data was available from eight LHDs (67%) receiving 10,113 notifications in 2012. Overall PPV was 89% (minimum-maximum = 77-97% across LHDs) and ranging from 30% (Hepatitis B) to 99% (Rotavirus). Of 166 individual investigation forms 84% were on hepatitis B or C cases, most of them discarded because of previously diagnosed chronic disease. LHDs investigate many notifications that do not lead to public health action and useful surveillance data leading to inefficient use of resources. Adaptation of case definitions or the legal framework concerning notifications may increase the efficiency of the notification system and lead to better use of data from notified cases.https://doi.org/10.1371/journal.pone.0212908
spellingShingle Benjamin Blümel
Michaela Diercke
Daniel Sagebiel
Andreas Gilsdorf
Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
PLoS ONE
title Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
title_full Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
title_fullStr Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
title_full_unstemmed Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
title_short Positive predictive value of the German notification system for infectious diseases: Surveillance data from eight local health departments, Berlin, 2012.
title_sort positive predictive value of the german notification system for infectious diseases surveillance data from eight local health departments berlin 2012
url https://doi.org/10.1371/journal.pone.0212908
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