Jiro Okumura

ORCID: 0000-0002-2627-1728
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About
Contact & Profiles
Research Areas
  • Occupational exposure and asthma
  • Indoor Air Quality and Microbial Exposure
  • Air Quality and Health Impacts
  • Occupational and environmental lung diseases
  • Monoclonal and Polyclonal Antibodies Research
  • Contact Dermatitis and Allergies
  • Infection Control and Ventilation
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Liver Disease Diagnosis and Treatment
  • Blood groups and transfusion
  • Therapeutic Uses of Natural Elements
  • COVID-19 and healthcare impacts
  • Pediatric health and respiratory diseases
  • Thyroid Disorders and Treatments
  • Migration, Health and Trauma
  • Glycosylation and Glycoproteins Research
  • Statistical Methods and Bayesian Inference
  • School Health and Nursing Education
  • Tuberculosis Research and Epidemiology
  • Organ Transplantation Techniques and Outcomes
  • Water Treatment and Disinfection
  • Healthcare professionals’ stress and burnout
  • Urban Green Space and Health
  • Legionella and Acanthamoeba research
  • COVID-19 epidemiological studies

Kindai University
2009-2023

International University of Health and Welfare
2020

Kanazawa University Hospital
1987-1991

Roswell Park Comprehensive Cancer Center
1979

Kyoto Prefectural University of Medicine
1975

We assessed the risk of COVID-19 infection in a healthcare worker (HCW) from multiple pathways exposure to SARS-CoV-2 health-care setting short distance 0.6 m between HCW and patient while caring, evaluated effectiveness face mask shield using model that combined previous infection-risk models. The included hand contact via contaminated surfaces an HCW's fingers with droplets, droplet spray, inhalation inspirable respirable particles. assumed scenario medium time (MCT) long (LCT) over 1 day...

10.1016/j.envint.2020.106338 article EN cc-by-nc-nd Environment International 2020-12-22

Mesothelioma is a malignancy with poor prognosis. It chiefly caused by asbestos exposure and its symptoms can occur about 30-50 yr after the initial exposure. This study aims to predict future trends in mesothelioma mortality Japan using method that an alternative age-cohort model. Our approach based on risk function links combined data pertaining population, size of labor force, quantity imports. We projected number deaths occurring individuals aged 50-89 for 2003-2050 functions. results...

10.2486/indhealth.ms1184 article EN Industrial Health 2012-01-01

AbstractAbstractAlthough asbestos has been widely distributed in the environment, health risks due to general environmental exposure have not estimated. Future mesothelioma risk from Japan was estimated by comparing historical data and mortality attributed exposure. We developed an equation estimate environmentally-attributable based on US Environmental Protection Agency's model for occupational mortality. Based our calculations, per year of will reach peak levels 2033 range 4.8 × 10−6 1.1...

10.1179/oeh.2009.15.2.166 article EN International Journal of Occupational and Environmental Health 2009-04-01

We analysed 2006-2016 national influenza surveillance data in Japan with regards to age-, sex-, and predominant virus-related epidemic patterns the prevalence of serum virus antibodies. found a significant increase both children (≤ 19 years old) adults (≥ 20 over time. The was higher (0.33 [95% CI 0.26-0.40]) than (0.09 0.07-0.11]). Additionally, mean antibodies for A(H1N1)pdm09 A(H3N2) significantly adults, whereas B lineages relatively low adults. There biennial cycle peak children, which...

10.1038/s41598-022-15867-3 article EN cc-by Scientific Reports 2022-07-14

Background & objectives The Quick Environmental Exposure and Sensitivity Inventory (QEESI) developed by Miller Prihoda in the USA is used as a questionnaire for patients with multiple chemical sensitivity (MCS) >10 countries. We Japanese version of QEESI, assessed its reliability validity, defined original cut-off values screening MCS 2003. Our recent study revealed that opportunities exposure to various chemicals had increased people Japan, while subjective symptoms severity. In this study,...

10.1371/journal.pone.0215144 article EN cc-by PLoS ONE 2019-04-26

During the recent emergence of COVID-19, an increased practice hand hygiene coincided with reduced incidence norovirus epidemic in Japan, which is similar to experience pandemic flu 2009. We investigated relationship between sales products, including liquid soap and alcohol-based sanitizer, trend epidemic. used national gastroenteritis surveillance data across Japan 2020 2021 compared base statistics these two years average previous 10 (2010-2019). calculated correlations (Spearman's Rho)...

10.1265/ehpm.22-00155 article EN cc-by Environmental Health and Preventive Medicine 2023-01-01

Simulated exposure to severe acute respiratory syndrome coronavirus 2 in the environment was demonstrated based on actual disease 2019 cluster occurrence an office, with a projected risk considering likely transmission pathways via aerosols and fomites. A total of 35/85 occupants were infected, attack rate first stage as 0.30. It inferred that aerosol at long-range produced virus concentration saliva infected cases basis simulation, more than 10

10.1111/risa.14249 article EN cc-by Risk Analysis 2023-11-07

Although asbestos has been widely distributed in the environment, health risks due to general environmental exposure have not estimated. Future mesothelioma risk from Japan was estimated by comparing historical data and mortality attributed exposure. We developed an equation estimate environmentally-attributable based on US Environmental Protection Agency's model for occupational mortality. Based our calculations, per year of will reach peak levels 2033 range 4.8 × 10−6 1.1 10−5. The number...

10.1179/107735209799195880 article EN International Journal of Occupational and Environmental Health 2009-04-01

Factors determining the sense of self-growth and burnout among hospital nurses, its differences resulting from number years nursing experience were investigated. Nurses working in a general (N=284) completed following questionnaires: Posttraumatic Growth Inventory to assess self-growth; Copenhagen Burnout burnout; Brief Job Stress Questionnaire stressors social support; 15-item Hardiness Scale personality characteristics; Emotional Labor for job characteristics nurse worker's stress scale...

10.11560/jahp.26.2_95 article EN The Japanese Journal of Health Psychology 2013-01-01

Living and housing conditions are one of the primary determinants an individual's health. This article describes epidemiologic evidences environmental factors related to irritative general symptoms in Japan, which is referred “sick house syndrome (SHS)”. The prevalence rate was suggested range from 4% 10% based on criteria identified by Ministry Health, Labour Welfare, excluded presence medically explained illnesses such as allergic diseases or caused microorganisms. Various chemicals...

10.1618/jhes.12.1 article EN Journal of the Human-Environment System 2009-01-01

Abstract Background Environmental hypersensitivity/intolerance is considered closely related to allergic diseases. To understand these conditions, the environmental intolerances and symptoms of patients with multiple chemical sensitivity (MCS), subjects self-reported electromagnetic hypersensitivity (EHS), bronchial asthma (BA), general population were compared using universal questionnaires. Methods A survey was conducted from 2012 2015. The categorized in four groups: 111...

10.1186/s12302-023-00735-2 article EN cc-by Environmental Sciences Europe 2023-04-30

Amylase activity was measured in thyroid tissues of various diseases and analysed electrophoretically. Normal contained significant amounts amylase (mean +/- SD; 2.71 1.15 IU/g tissue), their isozyme composed a majority salivary type isoamylase other peculiar isoamylase. The statistical decrease activities Graves' disease under hyperthyroidism, carcinoma, most adenomas were found (Graves' disease; 1.04 0.41, carcinoma; 1.49 1.10, adenoma (except five cases with high activity); 0.88 0.49...

10.1111/j.1440-1827.1987.tb03061.x article EN Acta Pathologica Japonica 1987-02-01

10.1016/0022-4731(79)90118-3 article EN Journal of Steroid Biochemistry 1979-10-01

Japan is currently one of the countries with a long life expectancy, in which great number older people need care for their daily living. has become increasingly internationalized due to an increase foreigners and international marriages. As elderly foreign-born Japanese increase, adults who do not use as first language will more opportunities receive care. We examined characteristics such country origin, spoken, lifestyle, living environment, cultural background were either foreign...

10.11236/jph.67.7_435 article EN PubMed 2020-01-01
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