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Shift workers are at increased risk of severe COVID-19 compared with day workers: Results from the international COVID sleep study (ICOSS) of 7141 workers.
Bjorvatn, Bjørn; Merikanto, Ilona; Reis, Catia; Korman, Maria; Bjelajac, Adrijana Koscec; Holzinger, Brigitte; De Gennaro, Luigi; Wing, Yun Kwok; Morin, Charles M; Espie, Colin A; Benedict, Christian; Landtblom, Anne-Marie; Matsui, Kentaro; Hrubos-Strøm, Harald; Mota-Rolim, Sérgio; Nadorff, Michael R; Plazzi, Giuseppe; Chan, Rachel Ngan Yin; Partinen, Markku; Dauvilliers, Yves; Chung, Frances; Forthun, Ingeborg.
  • Bjorvatn B; Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway and Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.
  • Merikanto I; SleepWell Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland and Orton Orthopaedics Hospital, Helsinki, Finland.
  • Reis C; Universidade Católica Portuguesa, Católica Research Centre for Psychological, Family and Social Wellbeing, Lisbon, Portugal and Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina de Lisboa, Lisboa, Portugal.
  • Korman M; Department of Occupational Therapy, Faculty of Health Sciences, Ariel University, Ariel, Israel.
  • Bjelajac AK; Institute for Medical Research and Occupational Health, Zagreb, Croatia.
  • Holzinger B; Institute for Consciousness and Dream Research, Medical University of Vienna, Wien, Postgraduate, Sleep Coaching, Vienna, Austria.
  • De Gennaro L; Department of Psychology, Sapienza University of Rome, Roma, Lazio, Italy and IRCCS Fondazione Santa Lucia, Roma, Italy.
  • Wing YK; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.
  • Morin CM; Centre de recherche CERVO/Brain Research Center, École de psychologie, Université Laval, Quebec, Quebec, Canada.
  • Espie CA; Sir Jules Thorn Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.
  • Benedict C; Department of Pharmaceutical Biosciences, Molecular Neuropharmacology, Uppsala University, Uppsala, Sweden.
  • Landtblom AM; Department of Medical Sciences, Neurology, Uppsala University, Uppsala, Sweden and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
  • Matsui K; Department of Clinical Laboratory, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Japan.
  • Hrubos-Strøm H; Department of Otorhinolaryngology, Akershus University Hospital, Lørenskog, Norway and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
  • Mota-Rolim S; Brain Institute, Physiology and Behavior Department and Onofre Lopes University Hospital, Federal University of Rio Grande do Norte, Natal, Brazil.
  • Nadorff MR; Department of Psychology, Mississippi State University, Mississippi, Mississippi, USA.
  • Plazzi G; IRCCS Istituto Delle Scienze Neurologiche di Bologna, Bologna, Italy; and Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
  • Chan RNY; Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.
  • Partinen M; Department of Clinical Neurosciences, University of Helsinki Clinicum Unit, Helsinki, Finland and Helsinki Sleep Clinic, Terveystalo Healthcare Services, Helsinki, Finland.
  • Dauvilliers Y; Sleep-Wake Disorders Center, Department of Neurology, Gui-de-Chauliac Hospital, Institute for Neurosciences of Montpellier INM, INSERM, University of Montpellier, Montpellier, France.
  • Chung F; Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada.
  • Forthun I; Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway and Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.
Chronobiol Int ; : 1-9, 2022 Nov 22.
Article in English | MEDLINE | ID: covidwho-2313078
ABSTRACT
The present study had two main aims. First, to investigate whether shift/night workers had a higher prevalence and severity of COVID-19 compared with day workers. Second, to investigate whether people regularly working in face-to-face settings during the pandemic exhibited a higher prevalence and severity of COVID-19 compared with those having no need to be in close contact with others at work. Data consisted of 7141 workers from 15 countries and four continents who participated in the International COVID Sleep Study-II (ICOSS-II) between May and December 2021. The associations between work status and a positive COVID-19 test and several indications of disease severity were tested with chi-square tests and logistic regressions adjusted for relevant confounders. In addition, statistical analyses were conducted for the associations between face-to-face work and COVID-19 status. Results showed that shift/night work was not associated with an increased risk of COVID-19 compared to day work. Still, shift/night workers reported higher odds for moderate to life-threatening COVID-19 (adjusted odds ratio (aOR) = 2.71, 95%-confidence interval = 1.23-5.95) and need for hospital care (aOR = 5.66, 1.89-16.95). Face-to-face work was associated with an increased risk of COVID-19 (aOR = 1.55, 1.12-2.14) but not with higher disease severity. In conclusion, shift/night work was not associated with an increased risk of COVID-19, but when infected, shift/night workers reported more severe disease. Impaired sleep and circadian disruption commonly seen among shift/night workers may be mediating factors. Working face-to-face increased the risk of COVID-19, likely due to increased exposure to the virus. However, face-to-face work was not associated with increased disease severity.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study / Prognostic study Language: English Journal: Chronobiol Int Journal subject: Physiology Year: 2022 Document Type: Article Affiliation country: 07420528.2022.2148182

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study / Prognostic study Language: English Journal: Chronobiol Int Journal subject: Physiology Year: 2022 Document Type: Article Affiliation country: 07420528.2022.2148182