ArticleInfluenza and other respiratory viruses2013
The significance of increased influenza notifications during spring and summer of 2010-11 in Australia.
Article in Influenza and other respiratory viruses, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed.
- Integrating dynamical modeling and phylogeographic inference to characterize global influenza circulation.PNAS nexus · 2025Article
- Integrating dynamical modeling and phylogeographic inference to characterize global influenza circulation.medRxiv : the preprint server for health sciences · 2024Article
- Evidence for an increase in the intensity of inter-seasonal influenza, Queensland, Australia, 2009-2019.Influenza and other respiratory viruses · 2021Article
- Coordinating the real-time use of global influenza activity data for better public health planning.Influenza and other respiratory viruses · 2020Article
- Inter-seasonality of influenza in Australia.Influenza and other respiratory viruses · 2019Article
- Intense interseasonal influenza outbreaks, Australia, 2018/19.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2019Observational
- Rapid mapping of the spatial and temporal intensity of influenza.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2019Article
- Using routine testing data to understand circulation patterns of influenza A, respiratory syncytial virus and other respiratory viruses in Victoria, Australia.Epidemiology and infection · 2019Article
- A severe 2017 influenza season dominated by influenza A(H3N2), Victoria, Australia.Western Pacific surveillance and response journal : WPSAR · 2018Article
- Australia's National Notifiable Diseases Surveillance System 1991-2011: expanding, adapting and improving.Epidemiology and infection · 2017Article
- Epidemiology of influenza B in Australia: 2001-2014 influenza seasons.Influenza and other respiratory viruses · 2017Article
- Retrospective forecasting of the 2010-2014 Melbourne influenza seasons using multiple surveillance systems.Epidemiology and infection · 2017Article
- An overview of the epidemiology of notifiable infectious diseases in Australia, 1991-2011.Epidemiology and infection · 2016Review
- Inter-Seasonal Influenza is Characterized by Extended Virus Transmission and Persistence.PLoS pathogens · 2015Article
- Quantifying differences in the epidemic curves from three influenza surveillance systems: a nonlinear regression analysis.Epidemiology and infection · 2015Article
- Influenza activity in Thailand and occurrence in different climates.SpringerPlus · 2015Article
- Exploring a proposed WHO method to determine thresholds for seasonal influenza surveillance.PloS one · 2013Article
- Emergency Department demand associated with seasonal influenza, 2010 through 2014, New South Wales, Australia.Western Pacific surveillance and response journal : WPSARArticle
- An Epidemiological Analysis of Summer Influenza Epidemics in Okinawa.Internal medicine (Tokyo, Japan)Review
- Epidemiology of the 2012 influenza season in Victoria, Australia.Western Pacific surveillance and response journal : WPSARArticle
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5 authors.
Funding
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Abstract
BACKGROUND &
objectiveDuring the temperate out-of-season months in Australia in late 2010 and early 2011, an unprecedented high number of influenza notifications were recorded. We aimed to assess the significance of these notifications.
methodsFor Australia, we used laboratory-confirmed cases notified to the WHO FluNet surveillance tool; the percentage of these that were positive; notifications by state and influenza type and subtype; and surveillance data from Google FluTrends. For the state of Victoria, we used laboratory-confirmed notified cases and influenza-like illness (ILI) proportions. We compared virus characterisation using haemagglutination-inhibition assays and phylogenetic analysis of the haemagglutinin gene for seasonal and out-of-season notifications.
resultsThe increase in notifications was most marked in tropical and subtropical Australia, but the number of out-of-season notifications in temperate Victoria was more than five times higher than the average of the previous three seasons. However, ILI proportions in spring-summer were not different to previous years. All out-of-season viruses tested were antigenically and genetically similar to those tested during either the 2010 or 2011 influenza seasons. An increase in the number of laboratories testing for influenza has led to an increase in the number of tests performed and cases notified.
conclusionAn increase in influenza infections in spring-summer of 2010-11 in tropical and temperate Australia was not associated with any differences in virus characterisation compared with viruses that circulated in the preceding and following winters. This increase probably reflected a natural variation in out-of-season virus circulation, which was amplified by increased laboratory testing.
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