ArticleInfluenza and other respiratory viruses2013
The first, second and third wave of pandemic influenza A (H1N1)pdm09 in North Denmark Region 2009-2011: a population-based study of hospitalizations.
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 10 papers.
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10 citing papers in PubMed.
- Effects and Interaction of Meteorological Parameters on Influenza Incidence During 2010-2019 in Lanzhou, China.Frontiers in public health · 2022Article
- SARS-CoV-2: lessons from both the history of medicine and from the biological behavior of other well-known viruses.Future microbiology · 2021Review
- Characteristics of hospitalised patients with influenza in 2015-2016 in northern Israel: three circulating strains and continued fear of 2009 A/H1N1.Epidemiology and infection · 2019Article
- ICU-treated influenza A(H1N1) pdm09 infections more severe post pandemic than during 2009 pandemic: a retrospective analysis.BMC infectious diseases · 2017Article
- Population Effects of Influenza A(H1N1) Pandemic among Health Plan Members, San Diego, California, USA, October-December 2009.Emerging infectious diseases · 2016Article
- Assessment of mOMV adjuvant efficacy in the pathogenic H1N1 influenza virus vaccine.Clinical and experimental vaccine research · 2014Article
- Article
- Observational
- Incidence of influenza A(H1N1)pdm09 infection, United Kingdom, 2009-2011.Emerging infectious diseases · 2013Article
- The first, second and third wave of pandemic influenza A (H1N1)pdm09 in North Denmark Region 2009-2011: a population-based study of hospitalizations.Influenza and other respiratory viruses · 2013Article
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Abstract
BACKGROUND AND
objectivesDenmark experienced three waves of the new pandemic influenza A (H1N1)pdm09 from July 2009 to February 2011. The aim of the study was to describe the epidemiology and clinical characteristics of hospitalized patients in a defined population of North Denmark Region with a mixed urban and rural community of 579,000 inhabitants.
methodsReview of medical records of all hospitalized patients with confirmed influenza A from July 2009 to February 2011.
resultsTwo hundred and seventy-three patients were admitted to hospital. The age-related population incidences of hospitalization were as follows: 0-14 years: 111/100,000, 15-64 years: 39/100,000, and ≥ 65 years: 17/100,000. During the first wave (July 2009-August 2009), three patients were admitted - none received treatment in intensive care units (ICUs), during the second wave (October 2009-January 2010), 158 patients were admitted - nine received treatment in ICUs, and during the third wave (December 2010-February 2011), 112 patients were admitted - 25 received treatment in ICUs. Fourteen patients (5%) died within 30 days of diagnosis (median 55 years; range 14-76 years) and additional seven patients (2.6%) died within 365 days (median 25 years; range 1-86 years).
conclusionsPatients hospitalized with pandemic influenza A (H1N1)pdm09 were predominantly children and younger adults, and only a few patients were >65 years. The third wave was the most severe taking the number and percentage of patients admitted to ICUs and 30-day mortality into consideration. We observed that the incidence of hospitalizations as well as clinical severity among younger adults did not decline from the second to the third wave.
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