{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T00:12:02Z","timestamp":1758931922065,"version":"3.44.0"},"reference-count":70,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T00:00:00Z","timestamp":1758844800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Background<\/jats:title>\n<jats:p>COVID-19 has changed the way hospitals manage infections and how healthcare workers (HCWs) carry out their activities. The pandemic has taught us how safety, hygiene and work schedules should be implemented. After the pandemic, a substantial body of research has examined the managerial capacities of health systems, national prevention programmes, and crisis-response strategies.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Objective<\/jats:title>\n<jats:p>The aim of this study is to determine the most critical risk management measures in the context of COVID-19 pandemic, with a focus both prevention and post-factum control measures.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Methodology<\/jats:title>\n<jats:p>We conducted a study using a questionnaire previously validated by the World Health Organization, adapted to identify the key organisational measures for preventing and controlling infections during interactions with patients infected with COVID-19 virus. The setting for the study was the \u201cSf. Ioan cel Nou\u201d County Emergency Hospital, Suceava, Romania. A total of 312 responses were collected between 10.10.2020 and 19.03.2021. The study complied with two ethical protocols, data were analysed using 21.0 version of the Statistical Package for the Social Sciences software.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Results<\/jats:title>\n<jats:p>Statistical analysis identified four constructs grouping the measures \u2013 technical, organisational, human resources, and others, all aimed at preventing the spread of SARS-CoV-2 within and beyond the hospital. In our vision, these four main resulted constructs could be conceptualised similarly to a security system, which aims protects an \u201casset\u201d from a threat by applying several layers that gradually reduce risk to near zero. Specifically, the first layer involves managing exposure risk by separating contaminated from uncontaminated areas; the second comprises general preventive measures for healthcare workers operating in contaminated areas; the third layer addresses staff attendance and workplace organisation, and the fourth focuses on risks perceived and manifested at the individual level.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec005\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>Exposure risk assessment and management follow a logic similar to that of a security system designed to protect an \u201casset\u201d from a threat. In our case, the health of the HCWs was at risk due to their interactions with COVID-19 patients at \u201cSf. Ioan cel Nou\u201d County Emergency Hospital, Suceava, Romania. Hypothesis testing indicated that all implemented measures contributed significantly to pandemic management, although a functional exposure risk management system requires effective risk reduction across all 4 layers. Given the validity of the second hypothesis \u2013 that preventive measures were generally applied at the hospital \u2013 we can conclude that HCWs and managers may primarily focus on this type of preventive measure, mainly addressing the second layer alone. This imbalance risks diverting managerial attention and resources toward the second layer at the expense of the other three.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0332804","type":"journal-article","created":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T17:39:28Z","timestamp":1758908368000},"page":"e0332804","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Layers of exposure risk management measures for the prevention and control of infections of healthcare workers treating COVID-19 patients"],"prefix":"10.1371","volume":"20","author":[{"given":"Ne\u015ftian \u0218tefan","family":"Andrei","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8986-6422","authenticated-orcid":true,"given":"Turnea","family":"Elena-Sabina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ti\u0163\u0103","family":"Silviu-Mihail","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vod\u0103","family":"Ana-Iolanda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Poroch","family":"Vladimir","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"340","published-online":{"date-parts":[[2025,9,26]]},"reference":[{"key":"pone.0332804.ref001","first-page":"1","author":"C Blackwell","year":"2008"},{"key":"pone.0332804.ref002","unstructured":"Tillwick H, Olivier M. A layered security architecture:design issues. 2020. Available from: https:\/\/digifors.cs.up.ac.za\/issa\/2004\/Proceedings\/Research\/064.pdf"},{"key":"pone.0332804.ref003","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1016\/B978-1-85617-746-7.00027-4","article-title":"Security Risk Management","author":"KE Peterson","year":"2010","journal-title":"The Professional Protection Officer"},{"key":"pone.0332804.ref004","volume-title":"Understanding Security Layers, Lesson 1","author":"Wiley catalog"},{"key":"pone.0332804.ref005","unstructured":"McGee F, Morin L, Stefas M, Zorzan S, Ghoniem M. Layer Definition and Discovery in Multilayer Network Dataset. 2019. [Cited 2022 August 18]. Available from: https:\/\/www.multilayernetvis.org\/fileadmin\/files\/McGee2019LayerDefinintionAndDiscovery.pdf"},{"key":"pone.0332804.ref006","volume-title":"Organizational culture and leadership","author":"EH Schein","year":"2010"},{"key":"pone.0332804.ref007","volume-title":"Resident Duty Hours: Enhancing Sleep, Supervision, and Safety","author":"Institute of Medicine (US) Committee on Optimizing Graduate Medical Trainee (Resident) Hours and Work Schedule to Improve Patient Safety; Ulmer C, Miller Wolman D, Johns MME, editors","year":"2009"},{"key":"pone.0332804.ref008","doi-asserted-by":"crossref","unstructured":"Kafol C. Multi-layer project cycle management model for complex projects. 2014. 23:279-294. Available from: https:\/\/www.daaam.info\/Downloads\/Pdfs\/science_books_pdfs\/2014\/Sc_Book_2014-023.pdf","DOI":"10.2507\/daaam.scibook.2014.23"},{"key":"pone.0332804.ref009","article-title":"Multi-Layered Development of Business Process Models and Distributed Business Application Systems - An Object-Oriented Approach","author":"OK Ferstl","year":"1996","journal-title":"Distributed Information Systems in Business"},{"key":"pone.0332804.ref010","doi-asserted-by":"crossref","first-page":"1479973120961843","DOI":"10.1177\/1479973120961843","article-title":"Management of suspected COVID-19 patients in a low prevalence region","volume":"17","author":"N Scichilone","year":"2020","journal-title":"Chron Respir Dis"},{"key":"pone.0332804.ref011","doi-asserted-by":"crossref","first-page":"104000","DOI":"10.1016\/j.ijnurstu.2021.104000","article-title":"Consequences of visiting restrictions during the COVID-19 pandemic: An integrative review","volume":"121","author":"K Hugelius","year":"2021","journal-title":"Int J Nurs Stud"},{"issue":"2","key":"pone.0332804.ref012","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1016\/j.mjafi.2020.03.022","article-title":"Healthcare impact of COVID-19 epidemic in India: A stochastic mathematical model","volume":"76","author":"K Chatterjee","year":"2020","journal-title":"Med J Armed Forces India"},{"key":"pone.0332804.ref013","doi-asserted-by":"crossref","first-page":"100410","DOI":"10.1016\/j.orhc.2023.100410","article-title":"Reorganization of a medical service network to manage pandemic waves: A real case study","volume":"39","author":"S Ahadian","year":"2023","journal-title":"Operations Research for Health Care"},{"issue":"19","key":"pone.0332804.ref014","doi-asserted-by":"crossref","first-page":"12688","DOI":"10.3390\/ijerph191912688","article-title":"Stress and Occupational Burnout of Nurses Working with COVID-19 Patients","volume":"19","author":"K Tomaszewska","year":"2022","journal-title":"Int J Environ Res Public Health"},{"issue":"2","key":"pone.0332804.ref015","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0263041","article-title":"Visual aids in ambulatory clinical practice: Experiences, perceptions and needs of patients and healthcare professionals","volume":"17","author":"C Hafner","year":"2022","journal-title":"PLoS One"},{"key":"pone.0332804.ref016","unstructured":"World Health Organization. Infection prevention and control in the context of coronavirus disease (Covid-19): A living guideline (No. WHO\/2019-nCoV\/ipc\/guideline\/2022.1). 2022 March 7. [Cited 2022 August 18]. Available from: https:\/\/iris.who.int\/bitstream\/handle\/10665\/352339\/WHO-2019-nCoV-ipc-guideline-2022.1-eng.pdf?sequence=1&isAllowed=y"},{"issue":"3","key":"pone.0332804.ref017","doi-asserted-by":"crossref","first-page":"212","DOI":"10.4103\/jfcm.JFCM_285_20","article-title":"Non-COVID area of a tertiary care hospital: A major source of nosocomial COVID-19 transmission","volume":"27","author":"MK Meena","year":"2020","journal-title":"J Family Community Med"},{"issue":"2","key":"pone.0332804.ref018","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0263900","article-title":"Are there differences between COVID-19 and non-COVID-19 inpatient pressure injuries? Experiences in Internal Medicine Units","volume":"17","author":"L Nieto-Garc\u00eda","year":"2022","journal-title":"PLoS One"},{"issue":"1","key":"pone.0332804.ref019","doi-asserted-by":"crossref","first-page":"7393","DOI":"10.1038\/s41598-021-86637-w","article-title":"Reorganization of nurse scheduling reduces the risk of healthcare associated infections","volume":"11","author":"E Valdano","year":"2021","journal-title":"Sci Rep"},{"key":"pone.0332804.ref020","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1016\/B978-0-323-85780-2.00008-1","article-title":"Addressing the global challenge of access to supplies during COVID-19","author":"A Peters","year":"2021","journal-title":"Environmental and Health Management of Novel Coronavirus Disease (COVID-19 )"},{"key":"pone.0332804.ref021","doi-asserted-by":"crossref","first-page":"1167411","DOI":"10.3389\/fpubh.2023.1167411","article-title":"Hospital response challenges and strategies during COVID-19 pandemic: a qualitative study","volume":"11","author":"L Mohammadinia","year":"2023","journal-title":"Front Public Health"},{"issue":"5","key":"pone.0332804.ref022","doi-asserted-by":"crossref","first-page":"4434","DOI":"10.3390\/ijerph20054434","article-title":"Preventive Measures among Healthcare Workers (HCWs) during the COVID-19 Pandemic","volume":"20","author":"R Rodr\u00edguez-Gonz\u00e1lez","year":"2023","journal-title":"Int J Environ Res Public Health"},{"issue":"11","key":"pone.0332804.ref023","article-title":"Adherence to Personal Protective Equipment Guidelines During the COVID-19 Pandemic: A Worldwide Survey Study","volume":"107","author":"AC Panayi","year":"2020","journal-title":"Br J Surg"},{"issue":"13","key":"pone.0332804.ref024","doi-asserted-by":"crossref","DOI":"10.3201\/eid2813.212352","article-title":"Infection Prevention and Control Initiatives to Prevent Healthcare-Associated Transmission of SARS-CoV-2, East Africa","volume":"28","author":"DJ Gomes","year":"2022","journal-title":"Emerg Infect Dis"},{"issue":"4","key":"pone.0332804.ref025","doi-asserted-by":"crossref","DOI":"10.1136\/bmjoq-2022-002063","article-title":"Sustaining a culture of safety and optimising patient outcomes while implementing zero harm programme: a 2-year project of the nursing services - SBAHC","volume":"12","author":"LM Obaid","year":"2023","journal-title":"BMJ Open Qual"},{"issue":"1","key":"pone.0332804.ref026","doi-asserted-by":"crossref","first-page":"4","DOI":"10.7861\/futurehosp.2-1-4","article-title":"Infrastructure - the key to healthcare improvement","volume":"2","author":"L Luxon","year":"2015","journal-title":"Future Hosp J"},{"key":"pone.0332804.ref027","doi-asserted-by":"crossref","first-page":"122285","DOI":"10.1016\/j.eswa.2023.122285","article-title":"Enhancing workplace safety: A flexible approach for personal protective equipment monitoring","volume":"238","author":"A Pisu","year":"2024","journal-title":"Expert Systems with Applications"},{"key":"pone.0332804.ref028","volume-title":"The coronavirus preparedness handbook: how to protect your home, school, workplace, and community from a deadly pandemic","author":"T Pennington","year":"2020"},{"issue":"2","key":"pone.0332804.ref029","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/j.idc.2022.01.001","article-title":"Infection Prevention and Control of Severe Acute Respiratory Syndrome Coronavirus 2 in Health Care Settings","volume":"36","author":"ML Winkler","year":"2022","journal-title":"Infect Dis Clin North Am"},{"key":"pone.0332804.ref030","volume-title":"WHO Guidelines on Hand Hygiene in Health Care: First Global Patient Safety Challenge Clean Care Is Safer Care","year":"2009"},{"issue":"8","key":"pone.0332804.ref031","doi-asserted-by":"crossref","DOI":"10.1016\/S1473-3099(21)00383-2","article-title":"Hand hygiene in health care: 20 years of ongoing advances and perspectives","volume":"21","author":"N Lotfinejad","year":"2021","journal-title":"Lancet Infect Dis"},{"key":"pone.0332804.ref032","volume-title":"Hand hygiene","author":"TJ Toney-Butler","year":"2023"},{"key":"pone.0332804.ref033","first-page":"1","article-title":"Motivating factors for frontline healthcare workers during the COVID-19 pandemic: A survey in Japan","author":"K Morishita","year":"2022","journal-title":"Curr Psychol"},{"key":"pone.0332804.ref034","first-page":"61","article-title":"COVID-19 and Living space challenge. Well-being and Public Health recommendations for a healthy, safe, and sustainable housing","volume":"91","author":"D D\u2019Alessandro","year":"2020","journal-title":"Acta Biomed"},{"issue":"1","key":"pone.0332804.ref035","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1213\/ANE.0000000000004912","article-title":"Battle Buddies: Rapid Deployment of a Psychological Resilience Intervention for Health Care Workers During the COVID-19 Pandemic","volume":"131","author":"CS Albott","year":"2020","journal-title":"Anesth Analg"},{"issue":"10","key":"pone.0332804.ref036","doi-asserted-by":"crossref","first-page":"1364","DOI":"10.1111\/anae.15180","article-title":"Resilience strategies to manage psychological distress among healthcare workers during the COVID-19 pandemic: a narrative review","volume":"75","author":"C Heath","year":"2020","journal-title":"Anaesthesia"},{"issue":"7","key":"pone.0332804.ref037","doi-asserted-by":"crossref","first-page":"1893","DOI":"10.1111\/jonm.13336","article-title":"Psychological resilience, coping behaviours and social support among health care workers during the COVID-19 pandemic: A systematic review of quantitative studies","volume":"29","author":"LJ Labrague","year":"2021","journal-title":"J Nurs Manag"},{"key":"pone.0332804.ref038","doi-asserted-by":"crossref","DOI":"10.1093\/eurpub\/ckab164.060","article-title":"How are countries supporting health workers? Data from the COVID-19 Health System Response Monitor","volume":"31","author":"G Williams","year":"2021","journal-title":"European Journal of Public Health"},{"key":"pone.0332804.ref039","unstructured":"World Health Organization. Health workers exposure risk assessment and management in the context of COVID-19 virus. 2020 March 4 [Cited 2022 March 17]. Available from: https:\/\/apps.who.int\/iris\/bitstream\/handle\/10665\/331340\/WHO-2019-nCov-HCW_risk_assessment-2020.1-eng.pdf"},{"key":"pone.0332804.ref040","unstructured":"World Health Organization. Infection prevention and control health-care facility response for COVID-19: A module from the suite of health service capacity assessments in the context of the COVID-19 pandemic: interim guidance. 2020 October 20 (No. WHO\/2019-nCoV\/HCF_assessment\/IPC\/2020.1) [Cited 2020 March 20]. World Health Organization. Available from: https:\/\/iris.who.int\/bitstream\/handle\/10665\/336255\/WHO-2019-nCoV-HCF_assessment-IPC-2020.1-eng.pdf?sequence=1"},{"issue":"1","key":"pone.0332804.ref041","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1213\/ANE.0000000000005264","article-title":"A Developing Nation\u2019s Experience in Using Simulation-Based Training as a Preparation Tool for the Coronavirus Disease 2019 Outbreak","volume":"132","author":"PS Loh","year":"2021","journal-title":"Anesth Analg"},{"key":"pone.0332804.ref042","author":"SA Boamah","year":"2022","journal-title":"Long-Term Care Workers\u2019 Experiences and Their Views About Support During the COVID-19 Pandemic: A Scoping Review"},{"issue":"15","key":"pone.0332804.ref043","doi-asserted-by":"crossref","first-page":"9113","DOI":"10.3390\/ijerph19159113","article-title":"The Evolution of Effort-Reward Imbalance in Workers during the COVID-19 Pandemic in France-An Observational Study in More than 8000 Workers","volume":"19","author":"L Delamarre","year":"2022","journal-title":"Int J Environ Res Public Health"},{"issue":"23","key":"pone.0332804.ref044","article-title":"The Experiences of Health Care Workers during the COVID-19 Pandemic in Korea: a Qualitative Study","volume":"36","author":"JY Lee","year":"2021","journal-title":"J Korean Med Sci"},{"key":"pone.0332804.ref045","doi-asserted-by":"crossref","first-page":"2865063","DOI":"10.1155\/2024\/2865063","article-title":"Professional Quality of Life and Psychological Impact on Frontline Healthcare Worker during the Fourth Wave of COVID-19","volume":"2024","author":"H Ullah","year":"2024","journal-title":"J Nurs Manag"},{"issue":"10","key":"pone.0332804.ref046","doi-asserted-by":"crossref","first-page":"1133","DOI":"10.1016\/j.ajic.2022.06.004","article-title":"Understanding the needs of health care workers in Singapore during the COVID-19 outbreak: A qualitative analysis","volume":"50","author":"LW Poh","year":"2022","journal-title":"Am J Infect Control"},{"issue":"2","key":"pone.0332804.ref047","doi-asserted-by":"crossref","first-page":"124","DOI":"10.5455\/msm.2021.33.124-130","article-title":"Effort Reward Imbalance and Insomnia Among Greek Healthcare Personnel During the Outbreak of COVID-19","volume":"33","author":"V Tzenetidis","year":"2021","journal-title":"Mater Sociomed"},{"issue":"4","key":"pone.0332804.ref048","doi-asserted-by":"crossref","first-page":"206","DOI":"10.13105\/wjma.v10.i4.206","article-title":"No increase in burnout in health care workers during the initial COVID-19 outbreak: Systematic review and meta-analysis","volume":"10","author":"V Kimpe","year":"2022","journal-title":"WJMA"},{"key":"pone.0332804.ref049","first-page":"100514","article-title":"Lessons from the frontline: The COVID-19 pandemic emergency care experience from a human resource perspective in the Pacific region","volume":"25","author":"CE Brolan","year":"2022","journal-title":"Lancet Reg Health West Pac"},{"issue":"1","key":"pone.0332804.ref050","doi-asserted-by":"crossref","first-page":"77","DOI":"10.5937\/bizinfo2301077G","article-title":"The importance of financial incentives for healthcare workers during the COVID-19 pandemic","volume":"14","author":"G Gavri\u0107","year":"2023","journal-title":"home"},{"key":"pone.0332804.ref051","unstructured":"World Health Organization. Infection prevention and control during health care when coronavirus disease (COVID-19) is suspected or confirmed: interim guidance. 2021 July 12 (No. WHO\/2019-nCoV\/IPC\/2021.1) [Cited 2021 September 20]. Available from: https:\/\/iris.who.int\/bitstream\/handle\/10665\/342620\/WHO-2019-nCoV-IPC-2021.1-eng.pdf?sequence=1"},{"key":"pone.0332804.ref052","author":"X Jiang","year":"2020","journal-title":"Is a 14-day quarantine period optimal for effectively controlling coronavirus disease 2019 (COVID-19)?"},{"issue":"21","key":"pone.0332804.ref053","doi-asserted-by":"crossref","first-page":"2153","DOI":"10.1001\/jama.2020.21694","article-title":"The Need for More and Better Testing for COVID-19","volume":"324","author":"YC Manabe","year":"2020","journal-title":"JAMA"},{"key":"pone.0332804.ref054","article-title":"Home monitoring for COVID-19","author":"M Medina","year":"2020","journal-title":"Cleve Clin J Med"},{"issue":"11","key":"pone.0332804.ref055","article-title":"Physical interventions to interrupt or reduce the spread of respiratory viruses","volume":"11","author":"T Jefferson","year":"2020","journal-title":"Cochrane Database Syst Rev"},{"key":"pone.0332804.ref056","author":"P Rios","year":"2020","journal-title":"Guidelines for preventing respiratory illness in older adults aged 60 years and above living in long-term care"},{"key":"pone.0332804.ref057","volume-title":"Analiz\u0103 statistic\u0103 multivariat\u0103","author":"C Pintilescu","year":"2007"},{"key":"pone.0332804.ref058","doi-asserted-by":"crossref","first-page":"754456","DOI":"10.3389\/fmed.2021.754456","article-title":"Suspension of Care for Patients With Spasticity During COVID-19 Pandemic: Ethical and Medico-Legal Point of View Starting From an Italian Study","volume":"8","author":"A De Donno","year":"2021","journal-title":"Front Med (Lausanne)"},{"issue":"5","key":"pone.0332804.ref059","doi-asserted-by":"crossref","first-page":"792","DOI":"10.1055\/s-0040-1721039","article-title":"Remote Patient Monitoring Program for Hospital Discharged COVID-19 Patients","volume":"11","author":"WJ Gordon","year":"2020","journal-title":"Appl Clin Inform"},{"issue":"2","key":"pone.0332804.ref060","doi-asserted-by":"crossref","DOI":"10.9778\/cmajo.20200174","article-title":"Adoption, feasibility and safety of a family medicine-led remote monitoring program for patients with COVID-19: a descriptive study","volume":"9","author":"P Agarwal","year":"2021","journal-title":"CMAJ Open"},{"issue":"1","key":"pone.0332804.ref061","doi-asserted-by":"crossref","DOI":"10.17533\/udea.iee.v40n1e10","article-title":"Social Consequences of the COVID-19 Pandemic. A Systematic Review","volume":"40","author":"P Hosseinzadeh","year":"2022","journal-title":"Invest Educ Enferm"},{"issue":"5","key":"pone.0332804.ref062","doi-asserted-by":"crossref","DOI":"10.2196\/18825","article-title":"Chinese Public\u2019s Attention to the COVID-19 Epidemic on Social Media: Observational Descriptive Study","volume":"22","author":"Y Zhao","year":"2020","journal-title":"J Med Internet Res"},{"key":"pone.0332804.ref063","doi-asserted-by":"crossref","first-page":"289","DOI":"10.1007\/978-981-99-1106-6_13","article-title":"Social Media in the Time of a Pandemic","author":"A Nayyar","year":"2023","journal-title":"Global Perspectives of COVID-19 Pandemic on Health, Education, and Role of Media"},{"issue":"9","key":"pone.0332804.ref064","doi-asserted-by":"crossref","DOI":"10.1001\/jamanetworkopen.2022.32760","article-title":"Estimated Effectiveness of COVID-19 Vaccines Against Omicron or Delta Symptomatic Infection and Severe Outcomes","volume":"5","author":"SA Buchan","year":"2022","journal-title":"JAMA Netw Open"},{"issue":"5","key":"pone.0332804.ref065","doi-asserted-by":"crossref","first-page":"494","DOI":"10.1056\/NEJMc2119270","article-title":"Effectiveness of BNT162b2 Vaccine against Omicron Variant in South Africa","volume":"386","author":"S Collie","year":"2022","journal-title":"N Engl J Med"},{"issue":"1","key":"pone.0332804.ref066","doi-asserted-by":"crossref","first-page":"9371","DOI":"10.1038\/s41598-023-35892-0","article-title":"Real time monitoring of COVID-19 intervention effectiveness through contact tracing data","volume":"13","author":"GC Gibson","year":"2023","journal-title":"Sci Rep"},{"issue":"7","key":"pone.0332804.ref067","doi-asserted-by":"crossref","first-page":"1037","DOI":"10.1038\/s41591-020-0916-2","article-title":"Real-time tracking of self-reported symptoms to predict potential COVID-19","volume":"26","author":"C Menni","year":"2020","journal-title":"Nat Med"},{"key":"pone.0332804.ref068","unstructured":"World Health Organization. Guidelines on core components of infection prevention and control programmes at the national and acute health care facility level. Guidelines on core components of infection prevention and control programmes at the national and acute health care facility level. 2016. [Cited 2025 July 10]. Available from: https:\/\/www.who.int\/publications\/i\/item\/9789241549929"},{"key":"pone.0332804.ref069","unstructured":"US Centers for Disease Control and Prevention (CDC). Infection Control in Healthcare Personnel: Infrastructure and Routine Practices. 2019. [Cited 2025 July 10]. Available from: https:\/\/www.cdc.gov\/infection-control\/hcp\/healthcare-personnel-infrastructure-routine-practices\/index.html"},{"key":"pone.0332804.ref070","unstructured":"European Centre for Disease Prevention and Control (ECDC). Infection prevention and control in healthcare settings - sixth update 9 February 2021. 2021. [Cited 2025 July 10]. Available from: https:\/\/www.ecdc.europa.eu\/sites\/default\/files\/documents\/Infection-prevention-and-control-in-healthcare-settings-COVID-19_6th_update_9_Feb_2021.pdf"}],"container-title":["PLOS One"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0332804","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T17:39:39Z","timestamp":1758908379000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0332804"}},"subtitle":[],"editor":[{"given":"Shivkumar","family":"Gopalakrishnan","sequence":"first","affiliation":[],"role":[{"role":"editor","vocabulary":"crossref"}]}],"short-title":[],"issued":{"date-parts":[[2025,9,26]]},"references-count":70,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2025,9,26]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0332804","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,26]]}}}