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Analyses of the 1957 (Asian) influenza pandemic in the United Kingdom and the impact of school closures

Identifieur interne : 000510 ( Ncbi/Merge ); précédent : 000509; suivant : 000511

Analyses of the 1957 (Asian) influenza pandemic in the United Kingdom and the impact of school closures

Auteurs : E. Vynnycky [Royaume-Uni] ; W. J. Edmunds [Royaume-Uni]

Source :

RBID : PMC:2870798

Descripteurs français

English descriptors

Abstract

SUMMARY

Many countries plan to close schools during a future influenza pandemic, although the potential impact is poorly understood. We apply a model of the transmission dynamics of pandemic influenza to consultation, serological and clinical data from the United Kingdom from the 1957 (Asian) influenza pandemic, to estimate the basic reproduction number (R0), the proportion of infected individuals who experience clinical symptoms and the impact of school/nursery closures. The R0 for Asian influenza was about 1·8 and 60–65% of infected individuals were estimated to have experienced clinical symptoms. During a future pandemic, closure of schools/nurseries could reduce the epidemic size only by a very small amount (<10%) if R0 is high (e.g. 2·5 or 3·5), and modest reductions, e.g. 22% might be possible if it is low (1·8) and schools are closed early, depending on assumptions about contact patterns. Further data on contact patterns and their dependence on school closures are needed.


Url:
DOI: 10.1017/S0950268807008369
PubMed: 17445311
PubMed Central: 2870798

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PMC:2870798

Le document en format XML

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<term>Grippe humaine</term>
<term>Humains</term>
<term>Incidence</term>
<term>Modèles statistiques</term>
<term>Nombre de reproduction de base</term>
<term>Nourrisson</term>
<term>Sujet âgé</term>
<term>Sujet âgé de 80 ans ou plus</term>
<term>Établissements scolaires</term>
</keywords>
</textClass>
</profileDesc>
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<front>
<div type="abstract" xml:lang="en">Many countries plan to close schools during a future influenza pandemic, although the potential impact is poorly understood. We apply a model of the transmission dynamics of pandemic influenza to consultation, serological and clinical data from the United Kingdom from the 1957 (Asian) influenza pandemic, to estimate the basic reproduction number (R0), the proportion of infected individuals who experience clinical symptoms and the impact of school/nursery closures. The R0 for Asian influenza was about 1.8 and 60-65% of infected individuals were estimated to have experienced clinical symptoms. During a future pandemic, closure of schools/nurseries could reduce the epidemic size only by a very small amount (<10%) if R0 is high (e.g. 2.5 or 3.5), and modest reductions, e.g. 22% might be possible if it is low (1.8) and schools are closed early, depending on assumptions about contact patterns. Further data on contact patterns and their dependence on school closures are needed.</div>
</front>
</TEI>
</pubmed>
</double>
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