ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2017
Performance of influenza case definitions for influenza community surveillance: based on the French influenza surveillance network GROG, 2009-2014.
Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.
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Who cites it
48 citing papers in PubMed, 1 synthesis or guideline pooled it, 85 citations in OpenAlex.
- Pooled it
- Safety, pharmacokinetics, and pharmacodynamics of human interferon-α2b spray in healthy participants.Antimicrobial agents and chemotherapy · 2025Trial
- Epidemic dynamics and age-specific distribution of respiratory pathogens: a direct-to-consumer surveillance study in four regions of China, October 2023-February 2025.BMC infectious diseases · 2026Article
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- Assessment of Influenza Severity in Bhutan by Using WHO Framework Pandemic Influenza Severity Assessment (PISA): An Implementation Research Study.Influenza and other respiratory viruses · 2025Article
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- Effectiveness of cocoon strategy vaccination on prevention of influenza-like illness in young infants.Human vaccines & immunotherapeutics · 2024Article
- Article
- Do all Emergency Room Patients With Influenza-like Symptoms Need Blood Cultures? A Retrospective Cohort Study of 2 Annual Influenza Seasons.Open forum infectious diseases · 2024Article
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- A combination of annual and nonannual forces drive respiratory disease in the tropics.BMJ global health · 2023Article
- Age Differences in Comorbidities, Presenting Symptoms, and Outcomes of Influenza Illness Requiring Hospitalization: A Worldwide Perspective From the Global Influenza Hospital Surveillance Network.Open forum infectious diseases · 2023Article
- Investigating the effects of population density of residence and rural/urban classification on rate of influenza-like illness symptoms in England and Wales.Influenza and other respiratory viruses · 2022Article
- Characterization of influenza infection in a high-income urban setting in Nairobi, Kenya.Tropical medicine and health · 2022Article
- The Oregon Child Absenteeism Due to Respiratory Disease Study (ORCHARDS): Rationale, objectives, and design.Influenza and other respiratory viruses · 2022Article
- Sentinel surveillance for influenza A viruses in Lahore District Pakistan in flu season 2015-2016.BMC infectious diseases · 2022Article
- Observational
- Does knowing the influenza epidemic threshold has been reached influence the performance of influenza case definitions?PloS one · 2022Article
- Performance of Symptom-Based Case Definitions to Identify Influenza Virus Infection Among Pregnant Women in Middle-Income Countries: Findings From the Pregnancy and Influenza Multinational Epidemiologic (PRIME) Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021Article
- Performance of the case definition of suspected influenza before and during the COVID-19 pandemic.Revista clinica espanola · 2021Article
Corrections and comments
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Authors and funding
13 authors at 8 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
International case definitions recommended by the Centers for Disease Control and Prevention (CDC), the European Centre for Disease Prevention and Control (ECDC), and the World Health Organization (WHO) are commonly used for influenza surveillance. We evaluated clinical factors associated with the laboratory-confirmed diagnosis of influenza and the performance of these influenza case definitions by using a complete dataset of 14,994 patients with acute respiratory infection (ARI) from whom a specimen was collected between August 2009 and April 2014 by the Groupes Régionaux d'Observation de la Grippe (GROG), a French national influenza surveillance network. Cough and fever ≥ 39 °C most accurately predicted an influenza infection in all age groups. Several other symptoms were associated with an increased risk of influenza (headache, weakness, myalgia, coryza) or decreased risk (adenopathy, pharyngitis, shortness of breath, otitis/otalgia, bronchitis/ bronchiolitis), but not throughout all age groups. The WHO case definition for influenza-like illness (ILI) had the highest specificity with 21.4%, while the ECDC ILI case definition had the highest sensitivity with 96.1%. The diagnosis among children younger than 5 years remains challenging. The study compared the performance of clinical influenza definitions based on outpatient surveillance and will contribute to improving the comparability of data shared at international level.
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