ArticleInfluenza and other respiratory viruses2018
Excess pneumonia and influenza hospitalizations associated with influenza epidemics in Portugal from season 1998/1999 to 2014/2015.
Article in Influenza and other respiratory viruses, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.
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Who cites it
24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Influenza-associated disease burden in mainland China: a systematic review and meta-analysis.Scientific reports · 2021Pooled it
- Variability in published rates of influenza-associated hospitalizations: A systematic review, 2007-2018.Journal of global health · 2020Pooled it
- Risk factors for plastic bronchitis complicating severeTranslational pediatrics · 2026Article
- Reconstructing severe acute respiratory infection dynamics from ICD-10 hospital discharge data: a 10-year analysis of 11.2 million discharges in Ecuador, 2014-2023.Frontiers in public health · 2026Article
- Development and validation of nomogram for predicting the risk of transferring to the ICU for children with influenza.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2024Article
- Uncovering the burden of Influenza in children in Portugal, 2008-2018.BMC infectious diseases · 2024Review
- Influenza hospitalisations in Spain between the last influenza and COVID-19 pandemic (2009-2019).Epidemiology and infection · 2023Article
- A retrospective study of the clinical characteristics of 9 children with pulmonary embolism associated with Mycoplasma pneumoniae pneumonia.BMC pediatrics · 2023Article
- Estimation of the influenza-associated respiratory hospitalization burden using sentinel surveillance data, Lebanon, 2015-2020.Influenza and other respiratory viruses · 2023Article
- Excess hospitalizations and mortality associated with seasonal influenza in Spain, 2008-2018.BMC infectious diseases · 2023Article
- Excess hospitalizations and mortality associated with seasonal influenza in Portugal, 2008-2018.BMC infectious diseases · 2022Article
- Burden of severe illness associated with laboratory confirmed influenza in adults aged 50-64 years: A rapid review.Influenza and other respiratory viruses · 2022Review
- Clinical Analysis and Risk Factors of Bronchiolitis Obliterans After Mycoplasma Pneumoniae Pneumonia.Infection and drug resistance · 2022Article
- Epidemiological Characterization and the Impact of Healthcare-Associated Pneumonia in Patients Admitted in a Northern Portuguese Hospital.Journal of clinical medicine · 2021Article
- Study on the relationship between the incidence of influenza and climate indicators and the prediction of influenza incidence.Environmental science and pollution research international · 2021Article
- Characteristics of hospitalizations with an influenza diagnosis, France, 2012-2013 to 2016-2017 influenza seasons.Influenza and other respiratory viruses · 2020Article
- Impact of national influenza vaccination strategy in severe influenza outcomes among the high-risk Portuguese population.BMC public health · 2019Article
- Estimates of influenza-associated hospitalisations in tropical Singapore, 2010-2017: Higher burden estimated in more recent years.Influenza and other respiratory viruses · 2019Article
- Burden of medically attended influenza in Norway 2008-2017.Influenza and other respiratory viruses · 2019Article
- Indirect effect of 7-valent and 13-valent pneumococcal conjugated vaccines on pneumococcal pneumonia hospitalizations in elderly.PloS one · 2019Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe aim of this study was to estimate excess pneumonia and influenza (P&I) hospitalizations during influenza epidemics and measure their correlation with influenza vaccine coverage in the 65 and more years old, according to the type/subtype of influenza virus.
methodsThe study period comprised week 40/1998-40/2015. Age-specific weekly P&I hospitalizations (ICD-9: 480-487) as main diagnosis were extracted from the National Hospital Discharge database. Age-specific baseline hospitalization rates were estimated by autoregressive integrated moving average (ARIMA) model without time periods with excess hospitalizations. Excess hospitalizations were calculated by subtracting expected hospitalization rates from the observed during influenza epidemic periods. Correlation between excess P&I hospitalizations and influenza vaccine coverage in the elderly was measured with Pearson correlation coefficient.
resultsThe average excess P&I hospitalizations/season was 19.4/10
conclusionOver 80% of the influenza epidemics were associated with excess hospitalizations. However, excess P&I hospitalizations pattern differed from age group and circulating virus. This ecologic approach also identified a reduction in excess P&I associated with A(H3) circulation with increasing vaccine coverage in the elderly.
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