ArticlePloS one2015
The burden and etiology of community-onset pneumonia in the aging Japanese population: a multicenter prospective study.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers, 4 of them syntheses that pooled it.
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Who cites it
105 citing papers in PubMed, 4 syntheses or guidelines pooled it, 191 citations in OpenAlex.
- Factors driving outcome variability in aspiration and community-acquired pneumonia: a meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025Pooled it
- Serotype distribution of invasive and non-invasive pneumococcal disease in adults ≥65 years of age following the introduction of 10- and 13-valent pneumococcal conjugate vaccines in infant national immunization programs: a systematic literature review.Frontiers in public health · 2025Pooled it
- Hospital utilization rates for influenza and RSV: a novel approach and critical assessment.Population health metrics · 2021Pooled it
- Prognostic implications of aspiration pneumonia in patients with community acquired pneumonia: A systematic review with meta-analysis.Scientific reports · 2016Pooled it
- Safety, tolerability, and immunogenicity of a 21-valent pneumococcal conjugate vaccine, V116, in Japanese healthy adults: A Phase I study.Human vaccines & immunotherapeutics · 2023Trial
- A Machine Learning-Derived Risk Scorecard for Pneumonia Hospitalization in Japanese Old-Old Adults.Geriatrics & gerontology international · 2026Article
- Cardiotoxicity of macrolide antibiotics: a pharmacovigilance study integrating FAERS and JADER databases.Naunyn-Schmiedeberg's archives of pharmacology · 2026Article
- Trends in Hospitalization, Case Fatality, and Mortality for Community-Acquired Pneumonia in Portugal over 20 Years.Epidemiologia (Basel, Switzerland) · 2026Article
- Pharyngeal Residue Is Independently Associated With Mortality and Aspiration Events in Patients Undergoing Swallowing Assessment: A Retrospective Cohort Study.Journal of general and family medicine · 2026Article
- Efficient Suprahyoid Muscle Contraction by Combined Modulated Currents in Mice.The Laryngoscope · 2026Article
- Factors Associated with 30-Day Non-Return to Pre-Hospital Residence in Older Patients Hospitalized with Pneumonia or Lower Respiratory Tract Infection: The Role of Serum Albumin and Early Treatment Failure.Geriatrics (Basel, Switzerland) · 2026Article
- Association Between Computed-Tomography-Derived Erector Spinae Muscle Characteristics and Swallowing Outcomes in Older Patients with Pneumonia.Healthcare (Basel, Switzerland) · 2026Article
- Burden of Respiratory Syncytial Virus in Older ADults in Nagasaki, Japan (Nagasaki ROAD): Preliminary Results (April 2024-March 2025) of a Prospective, Multicenter, Epidemiological Study.Infectious diseases and therapy · 2026Article
- Incidence of RSV- and Influenza-Associated Hospitalizations With Community-Acquired Pneumonia and Other Acute Respiratory Infection Among Adults in Japan in 2022-2024: APSG-J2 Study.Influenza and other respiratory viruses · 2026Article
- Association of muscle mass and quality with functional decline in older patients with pneumonia: single-center retrospective observational study in Japan.BMC pulmonary medicine · 2026Observational
- Treg/Th17 imbalance and its association with frailty in elderly patients with community-acquired pneumonia.Frontiers in medicine · 2026Article
- Article
- Beta-lactam plus macrolide treatment versus beta-lactam monotherapy for community-acquired pneumonia: a propensity score analysis using data from a multicenter prospective cohort study.BMC infectious diseases · 2025Article
- Pneumococcal vaccination in elderly care facilities in Japan: A cross-sectional, web-based survey.Human vaccines & immunotherapeutics · 2025Article
- Effects of Broad-Spectrum Antimicrobials on Patients with Community-Acquired Pneumonia with Low Risk for Drug-Resistant Pathogens: Historical Cohort Study in Japan.Infectious diseases and therapy · 2025Article
45 more citing papers are in PubMed but not listed here.
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Authors and funding
10 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe increasing burden of pneumonia in adults is an emerging health issue in the era of global population aging. This study was conducted to elucidate the burden of community-onset pneumonia (COP) and its etiologic fractions in Japan, the world's most aged society.
methodsA multicenter prospective surveillance for COP was conducted from September 2011 to January 2013 in Japan. All pneumonia patients aged ≥ 15 years, including those with community-acquired pneumonia (CAP) and health care-associated pneumonia (HCAP), were enrolled at four community hospitals on four major islands. The COP burden was estimated based on the surveillance data and national statistics.
resultsA total of 1,772 COP episodes out of 932,080 hospital visits were enrolled during the surveillance. The estimated overall incidence rates of adult COP, hospitalization, and in-hospital death were 16.9 (95% confidence interval, 13.6 to 20.9), 5.3 (4.5 to 6.2), and 0.7 (0.6 to 0.8) per 1,000 person-years (PY), respectively. The incidence rates sharply increased with age; the incidence in people aged ≥ 85 years was 10-fold higher than that in people aged 15-64 years. The estimated annual number of adult COP cases in the entire Japanese population was 1,880,000, and 69.4% were aged ≥ 65 years. Aspiration-associated pneumonia (630,000) was the leading etiologic category, followed by Streptococcus pneumoniae-associated pneumonia (530,000), Haemophilus influenzae-associated pneumonia (420,000), and respiratory virus-associated pneumonia (420,000), including influenza-associated pneumonia (30,000).
conclusionsA substantial portion of the COP burden occurs among elderly members of the Japanese adult population. In addition to the introduction of effective vaccines for S. pneumoniae and influenza, multidimensional approaches are needed to reduce the pneumonia burden in an aging society.
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