Observational studyBMC infectious diseases2020
Hospital-acquired influenza infections detected by a surveillance system over six seasons, from 2010/2011 to 2015/2016.
Observational study in BMC infectious diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 3 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
27 citing papers in PubMed, 3 syntheses or guidelines pooled it, 59 citations in OpenAlex.
- Mortality Risk Among Patients With Influenza Illness Admitted to the ICU: A Systematic Review and Meta-Analysis.Influenza and other respiratory viruses · 2025Pooled it
- A Systematic Review and Meta-Analysis of Inpatient Mortality Associated With Nosocomial and Community COVID-19 Exposes the Vulnerability of Immunosuppressed Adults.Frontiers in immunology · 2021Pooled it
- A Meta-Analysis on Evaluation of Nosocomial Infections Amongst Patients in a Tertiary Care Hospital.Journal of healthcare engineering · 2021Pooled it
- Impact of respiratory viruses detection on outcomes in ventilated nosocomial pneumonia: an exposed/unexposed study.Annals of intensive care · 2025Article
- Photoinactivation of influenza viruses by modulated indoor daylight spectrum and intensity.Applied and environmental microbiology · 2025Article
- Risk of nosocomial respiratory syncytial virus versus influenza among adult patients in acute care hospitals.Infection prevention in practice · 2025Article
- Constructing a screening model to identify patients at high risk of hospital-acquired influenza on admission to hospital.Frontiers in public health · 2025Article
- Prediction of hospital-acquired influenza using machine learning algorithms: a comparative study.BMC infectious diseases · 2024Observational
- Traditional definition of healthcare-associated influenza underestimates cases associated with other healthcare exposures in a population-based surveillance system.Infection control and hospital epidemiology · 2023Article
- Comparison of 28-Day Mortality Between Hospital- and Community-Acquired Influenza Patients.Infectious diseases & clinical microbiology · 2023Article
- Review
- Nosocomial SARS-CoV-2 transmission in multi-bedded hospital cubicles over successive pandemic waves: Lower mortality but wider spread with Omicron despite enhanced infection-prevention measures.Infection, disease & health · 2023Article
- Clinical impact of healthcare-associated respiratory syncytial virus in hospitalized adults.Infection control and hospital epidemiology · 2023Article
- Vaccine mandates for healthcare workers beyond COVID-19.Journal of medical ethics · 2023Article
- Investigating Epidemiologic and Molecular Links Between Patients With Community- and Hospital-Acquired Influenza A: 2017-2018 and 2019-2020, Michigan.Open forum infectious diseases · 2023Article
- The convergent evolution of influenza A virus: Implications, therapeutic strategies and what we need to know.Current research in microbial sciences · 2023Article
- Flu Vaccination among Healthcare Professionals in Times of COVID-19: Knowledge, Attitudes, and Behavior.Vaccines · 2022Article
- A2B-COVID: A Tool for Rapidly Evaluating Potential SARS-CoV-2 Transmission Events.Molecular biology and evolution · 2022Article
- Estimating the Nosocomial Transmission Rate of COVID-19 in Orthopaedic Surgery Patients During the Peak of the Pandemic.Orthopedic research and reviews · 2022Article
- Real-Time Investigation of a Large Nosocomial Influenza A Outbreak Informed by Genomic Epidemiology.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundIn addition to outbreaks of nosocomial influenza, sporadic nosocomial influenza infections also occur but are generally not reported in the literature. This study aimed to determine the epidemiologic characteristics of cases of nosocomial influenza compared with the remaining severe cases of severe influenza in acute hospitals in Catalonia (Spain) which were identified by surveillance.
methodsAn observational case-case epidemiological study was carried out in patients aged ≥18 years from Catalan 12 hospitals between 2010 and 2016. For each laboratory-confirmed influenza case (nosocomial or not) we collected demographic, virological and clinical characteristics. We defined patients with nosocomial influenza as those admitted to a hospital for a reason other than acute respiratory infection in whom ILI symptoms developed ≥48 h after admission and influenza virus infection was confirmed using RT-PCR. Mixed-effects regression was used to estimate the crude and adjusted OR.
resultsOne thousand seven hundred twenty-two hospitalized patients with severe laboratory-confirmed influenza virus infection were included: 96 (5.6%) were classified as nosocomial influenza and more frequently had > 14 days of hospital stay (42.7% vs. 27.7%, P < .001) and higher mortality (18.8% vs. 12.6%, P < .02). The variables associated with nosocomial influenza cases in acute-care hospital settings were chronic renal disease (aOR 2.44 95% CI 1.44-4.15) and immunodeficiency (aOR 1.79 95% CI 1.04-3.06).
conclusionsNosocomial infections are a recurring problem associated with high rates of chronic diseases and death. These findings underline the need for adherence to infection control guidelines.
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