Modified surveillance of influenza A(H1N1)v virus infections in France

Influenza A(H1N1)v investigation teams

doi:10.2807/ese.14.29.19276-en

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Modified surveillance of influenza A(H1N1)v virus infections in France
Influenza A(H1N1)v investigation teams^1,2
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Affiliations: ¹ French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), France* ² National Reference Centres for influenza viruses (North and South), France

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Citation style for this article: Influenza A(H1N1)v investigation teams. Modified surveillance of influenza A(H1N1)v virus infections in France. Euro Surveill. 2009;14(29):pii=19276. https://doi.org/10.2807/ese.14.29.19276-en Received: 20 Jul 2009

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Abstract

Up to early July 2009, surveillance of H1N1 cases in France was based on the identification of all possible cases in order to implement, around each of them, control measures aimed at delaying the spread of the virus. The global dissemination of the virus and the starting community transmission in France led us to shift to a population-based surveillance relying mainly on the identification and investigation of clusters of influenza-like illness, on the identification and individual follow-up of confirmed hospitalised cases as well as on the monitoring, through various sentinel systems, of the use of ambulatory and hospital care for influenza-like symptoms.