Preliminary analysis of the pandemic H1N1 influenza on Réunion Island (Indian Ocean): surveillance trends (July to mid-September 2009)

F Thouillot; C Do; E Balleydier; E Rachou; F Staikowsky; P Morbidelli; Y Jacques-Antoine; A Bourde; M Lagrange-Xélot; P Poubeau; A Winer; B A Gauzere; A Michault; M C Jaffar-Bandjee; G Henrion; L Filleul; E D’Ortenzio

doi:10.2807/ese.14.42.19364-en

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Preliminary analysis of the pandemic H1N1 influenza on Réunion Island (Indian Ocean): surveillance trends (July to mid-September 2009)
F Thouillot¹ , C Do¹ , E Balleydier¹ , E Rachou² , F Staikowsky³ , P Morbidelli⁴ , Y Jacques-Antoine⁵ , A Bourde⁶ , M Lagrange-Xélot⁷ , P Poubeau⁸ , A Winer⁹ , B A Gauzere¹⁰ , A Michault¹¹ , M C Jaffar-Bandjee¹² , G Henrion¹³ , L Filleul¹ , E D’Ortenzio¹
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Affiliations: ¹ Regional office (Cire) of the French Institute for Public Health Surveillance (Institut de veille sanitaire), Réunion, France ² Regional Health Observatory (Observatoire régional de la santé), Réunion, France ³ Emergency Department (Service des urgences), Regional Hospital Centre of Saint-Pierre, Réunion, France ⁴ Emergency Department (Service des urgences), Hospital Centre of Saint-Paul, Réunion, France ⁵ Emergency Department (Service des urgences), Clinic of Saint-Benoît, Réunion, France ⁶ Emergency Department (Service des urgences), Regional Hospital Centre of Saint-Denis, Réunion, France ⁷ Infectious Diseases Unit (Unité des maladies infectieuses), Regional Hospital Centre of Saint-Denis, Réunion, France ⁸ Infectious Diseases Unit (Unité des maladies infectieuses), Regional Hospital Centre of Saint-Pierre, Réunion, France ⁹ Intensive Care Unit (Service de réanimation), Regional Hospital Centre of Saint-Pierre, Réunion, France ¹⁰ Intensive Care Unit (Service de réanimation), Regional Hospital Centre of Saint-Denis, Réunion, France ¹¹ Laboratory for Bacteriology, Parasitology, Virology and Hospital Hygiene (Laboratoire de de bactériologie, parasitologie, virologie et hygiène hospitalière), Regional Hospital Centre of Saint-Pierre, Réunion, France ¹² Laboratory for Microbiology, Regional Hospital Centre of Saint-Denis, Réunion, France ¹³ Hospital Based Mobile Emergency Unit (SAMU), Regional Hospital Centre of Saint-Denis, Réunion, France

Correspondence:
E D’Ortenzio
eric.dortenzio sante.gouv.fr
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Citation style for this article: Thouillot F, Do C, Balleydier E, Rachou E, Staikowsky F, Morbidelli P, Jacques-Antoine Y, Bourde A, Lagrange-Xélot M, Poubeau P, Winer A, Gauzere B A, Michault A, Jaffar-Bandjee M C, Henrion G, Filleul L, D’Ortenzio E. Preliminary analysis of the pandemic H1N1 influenza on Réunion Island (Indian Ocean): surveillance trends (July to mid-September 2009). Euro Surveill. 2009;14(42):pii=19364. https://doi.org/10.2807/ese.14.42.19364-en Received: 05 Oct 2009

Abstract

First infections with the 2009 pandemic H1N1 influenza virus were identified on Réunion Island in July 2009. By the end of July, sustained community transmission of the virus was established. Pandemic H1N1 influenza activity peaked during week 35 (24 to 30 August), five weeks after the beginning of the epidemic and has been declining since week 36. We report preliminary epidemiological characteristics of the pandemic on Réunion Island in 2009 until week 37 ending September 13.