Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.

<h4>Background</h4>Influenza causes yearly seasonal epidemics and periodic pandemics. Global systems have been established to monitor the evolution and impact of influenza viruses, yet regional analysis of surveillance findings has been limited. This study describes epidemiological and v...

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Autor principal:	Western Pacific Region Global Influenza Surveillance and Response System
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/26d881cea1ec4a7e8aecab937f4c0f9a
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spelling	oai:doaj.org-article:26d881cea1ec4a7e8aecab937f4c0f9a2021-11-18T07:17:01ZEpidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.1932-620310.1371/journal.pone.0037568https://doaj.org/article/26d881cea1ec4a7e8aecab937f4c0f9a2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22675427/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Influenza causes yearly seasonal epidemics and periodic pandemics. Global systems have been established to monitor the evolution and impact of influenza viruses, yet regional analysis of surveillance findings has been limited. This study describes epidemiological and virological characteristics of influenza during 2006-2010 in the World Health Organization's Western Pacific Region.<h4>Methodology/principal findings</h4>Influenza-like illness (ILI) and influenza virus data were obtained from the 14 countries with National Influenza Centres. Data were obtained directly from countries and from FluNet, the web-based tool of the Global Influenza Surveillance and Response System. National influenza surveillance and participation in the global system increased over the five years. Peaks in ILI reporting appeared to be coincident with the proportion of influenza positive specimens. Temporal patterns of ILI activity and the proportion of influenza positive specimens were clearly observed in temperate countries: Mongolia, Japan and the Republic of Korea in the northern hemisphere, and Australia, New Zealand, Fiji and New Caledonia (France) in the southern hemisphere. Two annual peaks in activity were observed in China from 2006 through the first quarter of 2009. A temporal pattern was less evident in tropical countries, where influenza activity was observed year-round. Influenza A viruses accounted for the majority of viruses reported between 2006 and 2009, but an equal proportion of influenza A and influenza B viruses was detected in 2010.<h4>Conclusions/significance</h4>Despite differences in surveillance methods and intensity, commonalities in ILI and influenza virus circulation patterns were identified. Patterns suggest that influenza circulation may be dependent on a multitude of factors including seasonality and population movement. Dominant strains in Southeast Asian countries were later detected in other countries. Thus, timely reporting and regional sharing of information about influenza may serve as an early warning, and may assist countries to anticipate the potential severity and burden associated with incoming strains.Western Pacific Region Global Influenza Surveillance and Response SystemPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e37568 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Western Pacific Region Global Influenza Surveillance and Response System Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
description	<h4>Background</h4>Influenza causes yearly seasonal epidemics and periodic pandemics. Global systems have been established to monitor the evolution and impact of influenza viruses, yet regional analysis of surveillance findings has been limited. This study describes epidemiological and virological characteristics of influenza during 2006-2010 in the World Health Organization's Western Pacific Region.<h4>Methodology/principal findings</h4>Influenza-like illness (ILI) and influenza virus data were obtained from the 14 countries with National Influenza Centres. Data were obtained directly from countries and from FluNet, the web-based tool of the Global Influenza Surveillance and Response System. National influenza surveillance and participation in the global system increased over the five years. Peaks in ILI reporting appeared to be coincident with the proportion of influenza positive specimens. Temporal patterns of ILI activity and the proportion of influenza positive specimens were clearly observed in temperate countries: Mongolia, Japan and the Republic of Korea in the northern hemisphere, and Australia, New Zealand, Fiji and New Caledonia (France) in the southern hemisphere. Two annual peaks in activity were observed in China from 2006 through the first quarter of 2009. A temporal pattern was less evident in tropical countries, where influenza activity was observed year-round. Influenza A viruses accounted for the majority of viruses reported between 2006 and 2009, but an equal proportion of influenza A and influenza B viruses was detected in 2010.<h4>Conclusions/significance</h4>Despite differences in surveillance methods and intensity, commonalities in ILI and influenza virus circulation patterns were identified. Patterns suggest that influenza circulation may be dependent on a multitude of factors including seasonality and population movement. Dominant strains in Southeast Asian countries were later detected in other countries. Thus, timely reporting and regional sharing of information about influenza may serve as an early warning, and may assist countries to anticipate the potential severity and burden associated with incoming strains.
format	article
author	Western Pacific Region Global Influenza Surveillance and Response System
author_facet	Western Pacific Region Global Influenza Surveillance and Response System
author_sort	Western Pacific Region Global Influenza Surveillance and Response System
title	Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
title_short	Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
title_full	Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
title_fullStr	Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
title_full_unstemmed	Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.
title_sort	epidemiological and virological characteristics of influenza in the western pacific region of the world health organization, 2006-2010.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/26d881cea1ec4a7e8aecab937f4c0f9a
work_keys_str_mv	AT westernpacificregionglobalinfluenzasurveillanceandresponsesystem epidemiologicalandvirologicalcharacteristicsofinfluenzainthewesternpacificregionoftheworldhealthorganization20062010
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Epidemiological and virological characteristics of influenza in the Western Pacific Region of the World Health Organization, 2006-2010.

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