To obtain reliable, regionalized, and timely data for the spread of seasonal influenza in various age groups, which are preferentially affected by the influenza virus, a syndromic surveillance system for acute respiratory tract infections in Schleswig-Holstein (SHARE) was established in preschools and nurseries starting in 2006. The Schleswig-Flensburg district with 12 of 114 preschools and nurseries and 850 of 5,750 supervised children served as a pilot district. The weekly rates of sickness absenteeism correlated most strongly with the onset of seasonal influenza and with population density during the first half of the year. Mean annual sickness absenteeism levels of above 6% occurred more frequently above a population density of 200 inhabitants/km(2) than below this density (relative risk 2.50, 95% confidence interval 1.18-5.32). By analysis of the receiver-operating characteristic curve, the diagnostic performance of the SHARE system as a classifier for seasonal influenza was determined. The sensitivity was 83% and the specificity was 79% when sickness absence rates exceeded 5%. The performance of the SHARE system correlated with the size of the kindergarten. In 2008, 13 of 15 districts of Schleswig-Holstein participated with 157 of 1,684 kindergarten and 10,300 of 113,000 children. The evaluation for 2008 confirmed that the SHARE system is suitable for the surveillance of seasonal influenza at the district and state levels.
ZusammenfassungDie COVID-19-Pandemie stellt das deutsche Meldewesen im öffentlichen Infektionsschutz vor große Herausforderungen. Im Bundesland Schleswig-Holstein unterstützt die Landesmeldestelle die Gesundheitsämter durch tägliche und wöchentliche Auswertungen und hilft bei der Übermittlung der Meldedaten gemäß Infektionsschutzgesetz an das Robert Koch-Institut.In dem vorliegenden Bericht der Landesmeldestelle Schleswig-Holstein werden die SARS-CoV-2-Meldedaten aus dem Zeitraum März bis September 2020 ausgewertet. In Orientierung an der Entwicklung der Infektionszahlen wurde der Zeitraum in zwei Phasen ähnlichen Umfangs eingeteilt: März bis Mai und Juni bis September. Insgesamt wurden 4898 Infektionsfälle gemeldet. Bei dem Vergleich der Phasen zeigten sich besonders deutliche Unterschiede hinsichtlich der Hospitalisierung und Letalität, des Alters und der Staaten des Infektionsorts. In der ersten Phase waren besonders ältere Personen von einer hohen Hospitalisierungsrate und Sterblichkeit betroffen. In der zweiten Phase lagen das durchschnittliche Alter und die Hospitalisierungs- und Sterberaten deutlich niedriger und ein besonders großer Anteil war mit internationaler Reiseaktivität verbunden. Die Auswertung der Ausbruchsdokumentationen ergab den besonderen Schwerpunkt im Setting der privaten Haushalte. Dieser Artikel beschreibt die epidemische Situation in einem im Bundesvergleich Niedriginzidenzland.
The program package "Integrated Bulletin for Infectious disease Surveillance for Schleswig-Holstein" (IBIS(SH)) was introduced in 2008 for the automated data analysis of notifiable infectious diseases in Schleswig-Holstein, Germany. The Java-based IBIS(SH) software supports access to the national SurvNet@RKI reporting data via Access and MS SQL. The aim of the IBIS(SH) system is early warning and interpretation of clusters and monitoring of trends. One module of the system permits the analysis of temporal aberration by comparison of data from previous years. The interpretation system is based on the weekly median and on percentile values from previous years. The extent of an aberration is assessed by a five-step score magnitude scale. Another module permits the detection of regional clusters by the weekly assessment of a population-based risk analysis. IBIS(SH) automatically generates tables and graphs for the weekly bulletin and their allocation in the Internet. Data for the most relevant pathogens in Schleswig-Holstein are presented for the year 2009. The performance of the automated temporal and the regional detection systems are compared to outbreak detection by local health authorities.
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