Epidemiological and virological characteristics of seasonal influenza in the Western Pacific Region of the World Health Organization, 2011–2015
Journal Publication ResearchOnline@JCUWHO WPR Global Influenza Surveillance and Response System,
Abstract
Seasonal influenza is an acute viral infection that causes annual epidemics. The World Health Organization (WHO) estimates that the global disease burden of seasonal influenza is approximately one billion cases annually resulting in up to 500 000 deaths. (1) Epidemics are well defined as seasonal in northern and southern temperate climates with annual epidemics occurring in late winter or early spring. (2) In contrast, seasonal patterns in tropical and subtropical regions are less clear and tend to show more consistent levels of transmission year-round.
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Volume
8
ISBN/ISSN
2094-7313
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Issue
1
Pages Count
10
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Publisher
Western Pacific Regional Office of the World Health Organization
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DOI
10.5365/wpsar.2017.8.1.004