The Spread of Influenza A(H1N1)pdm09 Virus in Madagascar Described by a Sentinel Surveillance Network. - Archive ouverte HAL Access content directly
Journal Articles PLoS ONE Year : 2012

The Spread of Influenza A(H1N1)pdm09 Virus in Madagascar Described by a Sentinel Surveillance Network.

Abstract

The influenza A(H1N1)pdm09 virus has been a challenge for public health surveillance systems in all countries. In Antananarivo, the first imported case was reported on August 12, 2009. This work describes the spread of A(H1N1)pdm09 in Madagascar. METHODS: The diffusion of influenza A(H1N1)pdm09 in Madagascar was explored using notification data from a sentinel network. Clinical data were charted to identify peaks at each sentinel site and virological data was used to confirm viral circulation. RESULTS: From August 1, 2009 to February 28, 2010, 7,427 patients with influenza-like illness were reported. Most patients were aged 7 to 14 years. Laboratory tests confirmed infection with A(H1N1)pdm09 in 237 (33.2%) of 750 specimens. The incidence of patients differed between regions. By determining the epidemic peaks we traced the diffusion of the epidemic through locations and time in Madagascar. The first peak was detected during the epidemiological week 47-2009 in Antananarivo and the last one occurred in week 07-2010 in Tsiroanomandidy. CONCLUSION: Sentinel surveillance data can be used for describing epidemic trends, facilitating the development of interventions at the local level to mitigate disease spread and impact.
Fichier principal
Vignette du fichier
The_spread_of_influenza_A.pdf (1.64 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

pasteur-00702178 , version 1 (29-05-2012)

Identifiers

Cite

Soatiana Rajatonirina, Jean-Michel Heraud, Arnaud Orelle, Laurence Randrianasolo, Norosoa Razanajatovo, et al.. The Spread of Influenza A(H1N1)pdm09 Virus in Madagascar Described by a Sentinel Surveillance Network.. PLoS ONE, 2012, 7 (5), pp.e37067. ⟨10.1371/journal.pone.0037067⟩. ⟨pasteur-00702178⟩
52 View
281 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More