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Albreiki M, Mousa M, Azman SK, Vurivi H, Alhalwachi Z, Alshehhi F, AlShamsi S, Marzouqi NA, Alawadi T, Alrand H, Oulhaj A, Fikri A, Alsafar H. Risk of hospitalization and vaccine effectiveness among COVID-19 patients in the UAE during the Delta and Omicron outbreaks. Front Immunol 2023; 14:1049393. [PMID: 36860855 PMCID: PMC9969353 DOI: 10.3389/fimmu.2023.1049393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 01/20/2023] [Indexed: 02/17/2023] Open
Abstract
Introduction A rapid increase in COVID-19 cases due to the spread of the Delta and Omicron variants in vaccinated populations has raised concerns about the hospitalization risk associated with, and the effectiveness of, COVID-19 vaccines. Method This case-control study aims to determine the hospitalization risk associated with the inactivated BBIBP-CorV (Sinopharm) and mRNA BNT162b2 (Pfizer-BionTech) vaccines, and their effectiveness reducing the rate of hospital admission between 28 May 2021 and 13 January 2022, during the Delta and Omicron outbreaks. The estimation of vaccine effectiveness of 4,618 samples was based on the number of patients hospitalized at different vaccination statuses, adjusted for confounding variables. Results Hospitalization risk increases in patients affected with the Omicron variant if patients are aged ≤ 18 years (OR 6.41, 95% CI 2.90 to 14.17; p < 0.001), and in patients affected with the Delta variant if they are aged > 45 years (OR 3.41, 95% CI 2.21 to 5.50; p < 0.001). Vaccine effectiveness reducing the rate of hospital admission for fully vaccinated participants infected with the Delta and Omicron variants was similar for both the BBIBP-CorV (94%, 95% CI 90% to 97%; 90%, 95% CI 74% to 96%) and BNT162b2 vaccines (95%, 95% CI 61% to 99.3%; 94%, 95% CI 53% to 99%), respectively. Discussion The BBIBP-CorV and BNT162b2 vaccines utilized in the UAE vaccination program were highly effective in reducing the rate of COVID-19-related hospitalization during the Delta and Omicron outbreaks, and further effort must be taken to achieve high vaccine coverage rates in children and adolescents in the global context to reduce the hospitalization risk associated with COVID-19 on an international scale.
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Affiliation(s)
- Mohammed Albreiki
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Mira Mousa
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Nuffield Department of Women’s and Reproduction Health, Oxford University, Oxford, United Kingdom
| | - Syafiq Kamarul Azman
- Department of Electrical Engineering and Computer Science, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Hema Vurivi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Zainab Alhalwachi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Fatima Alshehhi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Safiya AlShamsi
- National Center for Health Research, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Nada Al Marzouqi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Tayba Alawadi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Hussain Alrand
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Abderrahim Oulhaj
- College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Data Intelligence Support Center, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Asma Fikri
- National Center for Health Research, Ministry of Health and Prevention, Dubai, United Arab Emirates
- Faculty of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Emirates Health Services Establishment, Dubai, United Arab Emirates
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Emirates Bio-Research Center, Ministry of Interior, Abu Dhabi, United Arab Emirates
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Mousa M, Albreiki M, Alshehhi F, AlShamsi S, Marzouqi NA, Alawadi T, Alrand H, Alsafar H, Fikri A. Similar effectiveness of the inactivated vaccine BBIBP-CorV (Sinopharm) and the mRNA vaccine BNT162b2 (Pfizer-BioNTech) against COVID-19 related hospitalizations during the Delta outbreak in the UAE. J Travel Med 2022; 29:taac036. [PMID: 35244687 PMCID: PMC8903474 DOI: 10.1093/jtm/taac036] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 11/29/2022]
Abstract
Inactivated vaccine BBIBP-CorV {Sinopharm; 95% [95% confidence interval (CI): 94, 97%]} and the mRNA vaccine BNT162b2 [Pfizer-BioNTech; 98% (95% CI: 86, 99%)] demonstrated protection against COVID-19 related hospitalizations from the Delta (B.1.617.2) variant. Ongoing efforts are necessary to target vaccine hesitancy and to promote booster shots for protection against severe COVID-19 disease and arising variants of concern.
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Affiliation(s)
- Mira Mousa
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Nuffield Department of Women’s and Reproduction Health, Oxford University, Oxford, United Kingdom
| | - Mohammed Albreiki
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Fatima Alshehhi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Safiya AlShamsi
- Laboratory Department, Emirates Health Services Establishment, Dubai, United Arab Emirates
| | - Nada Al Marzouqi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Tayba Alawadi
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Hussain Alrand
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Emirates Bio-Research Center, Ministry of Interior, Abu Dhabi, United Arab Emirates
| | - Asma Fikri
- Public Health Sector, Ministry of Health and Prevention, Dubai, United Arab Emirates
- National Center for Health Research, Ministry of Health and Prevention, United Arab Emirates
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