The shifting demographic landscape of pandemic influenza.

<h4>Background</h4>As Pandemic (H1N1) 2009 influenza spreads around the globe, it strikes school-age children more often than adults. Although there is some evidence of pre-existing immunity among older adults, this alone may not explain the significant gap in age-specific infection rate...

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Autores principales: Shweta Bansal, Babak Pourbohloul, Nathaniel Hupert, Bryan Grenfell, Lauren Ancel Meyers
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Publicado: Public Library of Science (PLoS) 2010
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Acceso en línea:https://doaj.org/article/09909e7df9c148f8ade753c24c8da68a
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spelling oai:doaj.org-article:09909e7df9c148f8ade753c24c8da68a2021-11-25T06:25:32ZThe shifting demographic landscape of pandemic influenza.1932-620310.1371/journal.pone.0009360https://doaj.org/article/09909e7df9c148f8ade753c24c8da68a2010-02-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20195468/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>As Pandemic (H1N1) 2009 influenza spreads around the globe, it strikes school-age children more often than adults. Although there is some evidence of pre-existing immunity among older adults, this alone may not explain the significant gap in age-specific infection rates.<h4>Methods and findings</h4>Based on a retrospective analysis of pandemic strains of influenza from the last century, we show that school-age children typically experience the highest attack rates in primarily naive populations, with the burden shifting to adults during the subsequent season. Using a parsimonious network-based mathematical model which incorporates the changing distribution of contacts in the susceptible population, we demonstrate that new pandemic strains of influenza are expected to shift the epidemiological landscape in exactly this way.<h4>Conclusions</h4>Our analysis provides a simple demographic explanation for the age bias observed for H1N1/09 attack rates, and suggests that this bias may shift in coming months. These results have significant implications for the allocation of public health resources for H1N1/09 and future influenza pandemics.Shweta BansalBabak PourbohloulNathaniel HupertBryan GrenfellLauren Ancel MeyersPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 2, p e9360 (2010)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Shweta Bansal
Babak Pourbohloul
Nathaniel Hupert
Bryan Grenfell
Lauren Ancel Meyers
The shifting demographic landscape of pandemic influenza.
description <h4>Background</h4>As Pandemic (H1N1) 2009 influenza spreads around the globe, it strikes school-age children more often than adults. Although there is some evidence of pre-existing immunity among older adults, this alone may not explain the significant gap in age-specific infection rates.<h4>Methods and findings</h4>Based on a retrospective analysis of pandemic strains of influenza from the last century, we show that school-age children typically experience the highest attack rates in primarily naive populations, with the burden shifting to adults during the subsequent season. Using a parsimonious network-based mathematical model which incorporates the changing distribution of contacts in the susceptible population, we demonstrate that new pandemic strains of influenza are expected to shift the epidemiological landscape in exactly this way.<h4>Conclusions</h4>Our analysis provides a simple demographic explanation for the age bias observed for H1N1/09 attack rates, and suggests that this bias may shift in coming months. These results have significant implications for the allocation of public health resources for H1N1/09 and future influenza pandemics.
format article
author Shweta Bansal
Babak Pourbohloul
Nathaniel Hupert
Bryan Grenfell
Lauren Ancel Meyers
author_facet Shweta Bansal
Babak Pourbohloul
Nathaniel Hupert
Bryan Grenfell
Lauren Ancel Meyers
author_sort Shweta Bansal
title The shifting demographic landscape of pandemic influenza.
title_short The shifting demographic landscape of pandemic influenza.
title_full The shifting demographic landscape of pandemic influenza.
title_fullStr The shifting demographic landscape of pandemic influenza.
title_full_unstemmed The shifting demographic landscape of pandemic influenza.
title_sort shifting demographic landscape of pandemic influenza.
publisher Public Library of Science (PLoS)
publishDate 2010
url https://doaj.org/article/09909e7df9c148f8ade753c24c8da68a
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