Why was the 2009 influenza pandemic in England so small?

The "Swine flu" pandemic of 2009 caused world-wide infections and deaths. Early efforts to understand its rate of spread were used to predict the probable future number of cases, but by the end of 2009 it was clear that these predictions had substantially overestimated the pandemic's...

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Huvudupphovsmän: Kubiak, R, McLean, A
Materialtyp: Journal article
Språk:English
Publicerad: Public Library of Science 2012
Ämnen:
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author Kubiak, R
McLean, A
author_facet Kubiak, R
McLean, A
author_sort Kubiak, R
collection OXFORD
description The "Swine flu" pandemic of 2009 caused world-wide infections and deaths. Early efforts to understand its rate of spread were used to predict the probable future number of cases, but by the end of 2009 it was clear that these predictions had substantially overestimated the pandemic's eventual impact. In England, the Health Protection Agency made announcements of the number of cases of the disease, which turned out to be surprisingly low for an influenza pandemic. The agency also carried out a serological survey half-way through the English epidemic. In this study, we use a mathematical model to reconcile early estimates of the rate of spread of infection, weekly data on the number of cases in the 2009 epidemic in England and the serological status of the English population at the end of the first pandemic wave. Our results reveal that if there are around 19 infections (i.e., seroconverters) for every reported case then the three data-sets are entirely consistent with each other. We go on to discuss when in the epidemic such a high ratio of seroconverters to cases of disease might have been detected, either through patterns in the case reports or through even earlier serological surveys.
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spelling oxford-uuid:79d6d461-d2a1-42b5-a111-01b70e8f90cf2022-03-26T20:39:58ZWhy was the 2009 influenza pandemic in England so small?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:79d6d461-d2a1-42b5-a111-01b70e8f90cfZoological sciencesInfectious diseasesEnglishOxford University Research Archive - ValetPublic Library of Science2012Kubiak, RMcLean, AThe "Swine flu" pandemic of 2009 caused world-wide infections and deaths. Early efforts to understand its rate of spread were used to predict the probable future number of cases, but by the end of 2009 it was clear that these predictions had substantially overestimated the pandemic's eventual impact. In England, the Health Protection Agency made announcements of the number of cases of the disease, which turned out to be surprisingly low for an influenza pandemic. The agency also carried out a serological survey half-way through the English epidemic. In this study, we use a mathematical model to reconcile early estimates of the rate of spread of infection, weekly data on the number of cases in the 2009 epidemic in England and the serological status of the English population at the end of the first pandemic wave. Our results reveal that if there are around 19 infections (i.e., seroconverters) for every reported case then the three data-sets are entirely consistent with each other. We go on to discuss when in the epidemic such a high ratio of seroconverters to cases of disease might have been detected, either through patterns in the case reports or through even earlier serological surveys.
spellingShingle Zoological sciences
Infectious diseases
Kubiak, R
McLean, A
Why was the 2009 influenza pandemic in England so small?
title Why was the 2009 influenza pandemic in England so small?
title_full Why was the 2009 influenza pandemic in England so small?
title_fullStr Why was the 2009 influenza pandemic in England so small?
title_full_unstemmed Why was the 2009 influenza pandemic in England so small?
title_short Why was the 2009 influenza pandemic in England so small?
title_sort why was the 2009 influenza pandemic in england so small
topic Zoological sciences
Infectious diseases
work_keys_str_mv AT kubiakr whywasthe2009influenzapandemicinenglandsosmall
AT mcleana whywasthe2009influenzapandemicinenglandsosmall