ArticleBMC public health2019
Factors associated with influenza-like-illness: a crowdsourced cohort study from 2012/13 to 2017/18.
Article in BMC public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.
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Who cites it
15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.
- Obesity as a risk factor for severe influenza infection in children and adolescents: a systematic review and meta-analysis.European journal of pediatrics · 2023Pooled it
- Obesity Increases the Severity and Mortality of Influenza and COVID-19: A Systematic Review and Meta-Analysis.Frontiers in endocrinology · 2020Pooled it
- Obesity in Recovery From Influenza-Like Illness and Effectiveness of Oseltamivir.Influenza and other respiratory viruses · 2025Trial
- Assessing dengue knowledge, attitudes and preventive practices in France and Italy: A cross-sectional study using participatory surveillance cohorts.PLOS global public health · 2026Article
- Air Pollution and Influenza Incidence: Evidence from Highly Polluted Countries.Iranian journal of public health · 2025Article
- National spatiotemporal patterns of influenza-like illness in Iran: A pre-COVID-19 study (2015-2019).PloS one · 2025Article
- Improved comprehension of influenza-related headaches: Perspectives and suggestions for incidence and prevalence of headache in influenza.European journal of neurology · 2024Article
- Risk factors associated with influenza A (H1N1)pdm09: a nested case control study of TB patients with ILI in Lahore District, Pakistan.BMC infectious diseases · 2024Article
- Risk Factors for COVID-19 and Respiratory Tract Infections during the Coronavirus Pandemic.Vaccines · 2024Article
- Influenza-like illness in individuals treated with immunosuppressants, biologics, and/or systemic corticosteroids for autoimmune or chronic inflammatory disease: A crowdsourced cohort study, France, 2017-2018.Influenza and other respiratory viruses · 2023Article
- Etiology, clinical characteristics, and risk factors associated with severe influenza-like illnesses in Mexican adults.IJID regions · 2023Article
- Obesity Is Associated With Increased Susceptibility to Influenza A (H1N1pdm) but Not H3N2 Infection.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021Article
- Longitudinal analyses suggest a higher burden of self-reported influenza-like illness among women and girls in a rural community in western Kenya.Global epidemiology · 2021Article
- Public activities preceding the onset of acute respiratory infection syndromes in adults in England - implications for the use of social distancing to control pandemic respiratory infections.Wellcome open research · 2020Article
- Respiratory Symptoms Among Domestic Waste Collectors.Medeniyet medical journal · 2020Article
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundInfluenza generates a significant societal impact on morbidity, mortality, and associated costs. The study objective was to identify factors associated with influenza-like-illness (ILI) episodes during seasonal influenza epidemics among the general population.
methodsA prospective study was conducted with the GrippeNet.fr crowdsourced cohort between 2012/13 and 2017/18. After having completed a yearly profile survey detailing socio-demographic, lifestyle and health characteristics, participants reported weekly data on symptoms. Factors associated with at least one ILI episode per influenza epidemic, using the European Centre for Disease Prevention and Control case definition, were analyzed through a conditional logistic regression model.
resultsFrom 2012/13 to 2017/18, 6992 individuals participated at least once, and 61% of them were women (n = 4258). From 11% (n = 469/4140 in 2013/14) to 29% (n = 866/2943 in 2012/13) of individuals experienced at least one ILI during an influenza epidemic. Factors associated with higher risk for ILI were: gender female (OR = 1.29, 95%CI [1.20; 1.40]), young age (< 5 years old: 3.12 [2.05; 4.68]); from 5 to 14 years old: 1.53 [1.17; 2.00]), respiratory allergies (1.27 [1.18; 1.37]), receiving a treatment for chronic disease (1.20 [1.09; 1.32]), being overweight (1.18 [1.08; 1.29]) or obese (1.28 [1.14; 1.44]), using public transport (1.17 [1.07; 1.29]) and having contact with pets (1.18 [1.09; 1.27]). Older age (≥ 75 years old: 0.70 [0.56; 0.87]) and being vaccinated against influenza (0.91 [0.84; 0.99]) were found to be protective factors for ILI.
conclusionsThis ILI risk factors analysis confirms and further completes the list of factors observed through traditional surveillance systems. It indicates that crowdsourced cohorts are effective to study ILI determinants at the population level. These findings could be used to adapt influenza prevention messages at the population level to reduce the spread of the disease.
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