ArticleEuropean journal of epidemiology1999
The duration and magnitude of influenza epidemics: a study of surveillance data from sentinel general practices in England, Wales and the Netherlands.
Article in European journal of epidemiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.
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Who cites it
48 citing papers in PubMed, 112 citations in OpenAlex.
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- Geo-epidemiology of malaria incidence in the Vhembe District to guide targeted elimination strategies, South-Africa, 2015-2018: a local resurgence.Scientific reports · 2023Article
- Distinct influenza surveillance networks and their agreement in recording regional influenza circulation: Experience from Southeast Michigan.Influenza and other respiratory viruses · 2022Article
- An Overview of Influenza Viruses and Vaccines.Vaccines · 2021Review
- Emergency preparedness for public health threats, surveillance, modelling & forecasting.The Indian journal of medical research · 2021Review
- Novel Use of Rapid Antigen Influenza Testing in the Outpatient Setting To Provide an Early Warning Sign of Influenza Activity in the Emergency Departments of an Integrated Health System.Journal of clinical microbiology · 2020Article
- Application of Functional Data Analysis to Identify Patterns of Malaria Incidence, to Guide Targeted Control Strategies.International journal of environmental research and public health · 2020Article
- Efficient sentinel surveillance strategies for preventing epidemics on networks.PLoS computational biology · 2019Article
- Influenza epidemics observed in primary care from 1984 to 2017 in France: A decrease in epidemic size over time.Influenza and other respiratory viruses · 2019Article
- Deploying digital health data to optimize influenza surveillance at national and local scales.PLoS computational biology · 2018Article
- Retrospective Observational Study of Atypical Winter Respiratory Illness Season Using Real-Time Syndromic Surveillance, England, 2014-15.Emerging infectious diseases · 2017Observational
- Social and economic burden of patients with influenza-like illness and clinically diagnosed flu treated at various health facilities in Vietnam.ClinicoEconomics and outcomes research : CEOR · 2017Article
- Modernising epidemic science: enabling patient-centred research during epidemics.BMC medicine · 2016Article
- Is the onset of influenza in the community age-related?Epidemiology and infection · 2016Article
- Harmonizing influenza primary-care surveillance in the United Kingdom: piloting two methods to assess the timing and intensity of the seasonal epidemic across several general practice-based surveillance schemes.Epidemiology and infection · 2015Review
- Optimal design of studies of influenza transmission in households. II: comparison between cohort and case-ascertained studies.Epidemiology and infection · 2014Article
- Economic burden of seasonal influenza B in France during winter 2010-2011.BMC public health · 2014Article
- Article
- Influenza surveillance in Europe: establishing epidemic thresholds by the moving epidemic method.Influenza and other respiratory viruses · 2013Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Weekly incidence data for influenza-like illness, routinely collected in sentinel general practices in England and Wales and in the Netherlands over 10 winter periods (week 37 in one year to week 20 in the next, 1987/1988-1996/1997) were examined in conjunction with matching virus isolate data to define epidemic periods of influenza in the two countries. We first defined the background rates of recording influenza-like illness which occurred at times when only sporadic or no isolations of virus were reported. The background rates were similar in the two networks with mean weekly incidence in England and Wales of 28.1 per 100,000 (all ages) and in the Netherlands 29.8. Epidemic periods defined as lying above the upper 95% confidence level of the background rate lasted on an average of about 10 weeks. Once epidemics were recognised, peak incidence was generally achieved within 4 weeks. The excess population (all ages) consulting general practitioners during influenza epidemic periods was calculated from the difference between the observed and background incidence rates, and expressed as a percentage of the total population. In the 10 periods surveyed, the percentage of the population consulting and diagnosed with influenza-like illness in England and Wales ranged from 0.4% in 1991/1992 to 1.7% in 1989/1990 and in the Netherlands from 0.5% in 1990/ 1991 to 2.1% in 1989/1990. The duration and epidemic periods were broadly similar in the two countries though the excess consulting population during the 10 epidemics studied averaged 0.85% in England and Wales compared with 1.39% in the Netherlands. There were substantial differences between the two countries in the impact of influenza in individual years, as measured in the consulting population even though the predominant virus (sub)types were similar.
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