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Willem L, Abrams S, Franco N, Coletti P, Libin PJK, Wambua J, Couvreur S, André E, Wenseleers T, Mao Z, Torneri A, Faes C, Beutels P, Hens N. The impact of quality-adjusted life years on evaluating COVID-19 mitigation strategies: lessons from age-specific vaccination roll-out and variants of concern in Belgium (2020-2022). BMC Public Health 2024; 24:1171. [PMID: 38671366 PMCID: PMC11047051 DOI: 10.1186/s12889-024-18576-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND When formulating and evaluating COVID-19 vaccination strategies, an emphasis has been placed on preventing severe disease that overburdens healthcare systems and leads to mortality. However, more conventional outcomes such as quality-adjusted life years (QALYs) and inequality indicators are warranted as additional information for policymakers. METHODS We adopted a mathematical transmission model to describe the infectious disease dynamics of SARS-COV-2, including disease mortality and morbidity, and to evaluate (non)pharmaceutical interventions. Therefore, we considered temporal immunity levels, together with the distinct transmissibility of variants of concern (VOCs) and their corresponding vaccine effectiveness. We included both general and age-specific characteristics related to SARS-CoV-2 vaccination. Our scenario study is informed by data from Belgium, focusing on the period from August 2021 until February 2022, when vaccination for children aged 5-11 years was initially not yet licensed and first booster doses were administered to adults. More specifically, we investigated the potential impact of an earlier vaccination programme for children and increased or reduced historical adult booster dose uptake. RESULTS Through simulations, we demonstrate that increasing vaccine uptake in children aged 5-11 years in August-September 2021 could have led to reduced disease incidence and ICU occupancy, which was an essential indicator for implementing non-pharmaceutical interventions and maintaining healthcare system functionality. However, an enhanced booster dose regimen for adults from November 2021 onward could have resulted in more substantial cumulative QALY gains, particularly through the prevention of elevated levels of infection and disease incidence associated with the emergence of Omicron VOC. In both scenarios, the need for non-pharmaceutical interventions could have decreased, potentially boosting economic activity and mental well-being. CONCLUSIONS When calculating the impact of measures to mitigate disease spread in terms of life years lost due to COVID-19 mortality, we highlight the impact of COVID-19 on the health-related quality of life of survivors. Our study underscores that disease-related morbidity could constitute a significant part of the overall health burden. Our quantitative findings depend on the specific setup of the interventions under review, which is open to debate or should be contextualised within future situations.
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Affiliation(s)
- Lander Willem
- Department of Family Medicine and Population Health, Antwerp, Belgium.
- Centre for Health Economic Research and Modelling Infectious Diseases, University of Antwerp, Antwerp, Belgium.
| | - Steven Abrams
- Department of Family Medicine and Population Health, Antwerp, Belgium
- Data Science Institute, Hasselt University, Hasselt, Belgium
| | - Nicolas Franco
- Data Science Institute, Hasselt University, Hasselt, Belgium
- Namur Institute for Complex Systems (naXys) and Department of Mathematics, University of Namur, Namur, Belgium
| | - Pietro Coletti
- Data Science Institute, Hasselt University, Hasselt, Belgium
| | - Pieter J K Libin
- Data Science Institute, Hasselt University, Hasselt, Belgium
- Artificial Intelligence Lab, Vrije Universiteit Brussel, Brussels, Belgium
- Rega Institute for Medical Research, Clinical and Epidemiological Virology, University of Leuven, Leuven, Belgium
| | - James Wambua
- Data Science Institute, Hasselt University, Hasselt, Belgium
| | - Simon Couvreur
- Department of Epidemiology and public health, Sciensano, Brussel, Belgium
| | - Emmanuel André
- National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, University of Leuven, Leuven, Belgium
| | - Tom Wenseleers
- Laboratory of Socioecology and Social Evolution, University of Leuven, Leuven, Belgium
| | - Zhuxin Mao
- Centre for Health Economic Research and Modelling Infectious Diseases, University of Antwerp, Antwerp, Belgium
| | - Andrea Torneri
- Data Science Institute, Hasselt University, Hasselt, Belgium
| | - Christel Faes
- Data Science Institute, Hasselt University, Hasselt, Belgium
| | - Philippe Beutels
- Centre for Health Economic Research and Modelling Infectious Diseases, University of Antwerp, Antwerp, Belgium
- School of Public Health and Community Medicine, The University of New South Wales, Sydney, Australia
| | - Niel Hens
- Centre for Health Economic Research and Modelling Infectious Diseases, University of Antwerp, Antwerp, Belgium
- Data Science Institute, Hasselt University, Hasselt, Belgium
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Chatzidaki E, Chioti V, Mourtou L, Papavasileiou G, Kitani RA, Kalafatis E, Mitsis K, Athanasiou M, Zarkogianni K, Nikita K, Kanaka-Gantenbein C, Pervanidou P. Parenting Styles and Psychosocial Factors of Mother-Child Dyads Participating in the ENDORSE Digital Weight Management Program for Children and Adolescents during the COVID-19 Pandemic. CHILDREN (BASEL, SWITZERLAND) 2024; 11:107. [PMID: 38255420 PMCID: PMC10814028 DOI: 10.3390/children11010107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
Childhood obesity is a complex disease with multiple biological and psychosocial risk factors. Recently, novel digital programs were developed with growing evidence for their effectiveness in pediatric weight management studies. The ENDORSE platform consists of mobile applications, wearables, and serious games for the remote management of childhood obesity. The pilot studies included 50 mothers and their children aged 6-14 years and resulted in a clinically significant BMI z-score reduction over 4 to 5 months. This secondary analysis of the ENDORSE study focuses on parenting styles and psychosocial factors. METHODOLOGY Semi-structured clinical interviews were conducted with all participating mothers pre-and post-intervention. The Parenting Styles and Dimensions Questionnaire (PSDQ) evaluated the mothers' parenting styles. The psychosocial functioning of the participating children was assessed with the parental version of the Strengths and Difficulties Questionnaire (SDQ). The relationship between parenting styles, psychosocial parameters, and weight outcomes was investigated using a linear regression analysis. RESULTS Weight-related stigma at school (56%), body image concerns (66%), and difficulties in family relationships (48%) were the main concerns documented during the initial psychological interviews. According to the SDQ, there was a significant decrease in children's conduct problems during the study's initial phase (pre-pilot group). A decrease in maternal demandingness (i.e., strict parenting style) was associated with a decrease in BMI z-score (beta coefficient = 0.314, p-value = 0.003). CONCLUSION Decreasing parental demandingness was associated with better weight outcomes, highlighting the importance of assessing parenting factors in pediatric weight management programs.
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Affiliation(s)
- Evi Chatzidaki
- First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, 11527 Athens, Greece; (E.C.); (V.C.); (C.K.-G.)
| | - Vassiliki Chioti
- First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, 11527 Athens, Greece; (E.C.); (V.C.); (C.K.-G.)
| | - Lidia Mourtou
- Postgraduate Course on “The Science of Stress and Health Promotion”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (L.M.); (G.P.); (R.-A.K.)
| | - Georgia Papavasileiou
- Postgraduate Course on “The Science of Stress and Health Promotion”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (L.M.); (G.P.); (R.-A.K.)
| | - Rosa-Anna Kitani
- Postgraduate Course on “The Science of Stress and Health Promotion”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (L.M.); (G.P.); (R.-A.K.)
| | - Eleftherios Kalafatis
- School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece; (E.K.); (K.M.); (M.A.); (K.Z.); (K.N.)
| | - Kostas Mitsis
- School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece; (E.K.); (K.M.); (M.A.); (K.Z.); (K.N.)
| | - Maria Athanasiou
- School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece; (E.K.); (K.M.); (M.A.); (K.Z.); (K.N.)
| | - Konstantia Zarkogianni
- School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece; (E.K.); (K.M.); (M.A.); (K.Z.); (K.N.)
- Department of Advanced Computing Sciences, Faculty of Sciences and Engineering, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Konstantina Nikita
- School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece; (E.K.); (K.M.); (M.A.); (K.Z.); (K.N.)
| | - Christina Kanaka-Gantenbein
- First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, 11527 Athens, Greece; (E.C.); (V.C.); (C.K.-G.)
- Postgraduate Course on “The Science of Stress and Health Promotion”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (L.M.); (G.P.); (R.-A.K.)
| | - Panagiota Pervanidou
- First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, 11527 Athens, Greece; (E.C.); (V.C.); (C.K.-G.)
- Postgraduate Course on “The Science of Stress and Health Promotion”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (L.M.); (G.P.); (R.-A.K.)
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Maeda H, Saito N, Igarashi A, Ishida M, Terada M, Masuda S, Osawa R, Hosokawa N, Nakashima K, Kamura H, Imura H, Inoue H, Matsuzaka S, Sugimoto Y, Kuwamitsu O, Motohashi I, Morikawa T, Oda R, Hoshina Y, Matono T, Teshigahara O, Sando E, Asami S, Kudo S, Akizuki N, Muto Y, Hayakawa T, Kishaba T, Ohara Y, Kubo Y, Suzuki M, Morimoto K. Effectiveness of primary series, first, and second booster vaccination of monovalent mRNA COVID-19 vaccines against symptomatic SARS-CoV-2 infections and severe diseases during the SARS-CoV-2 omicron BA.5 epidemic in Japan: vaccine effectiveness real-time surveillance for SARS-CoV-2 (VERSUS). Expert Rev Vaccines 2024; 23:213-225. [PMID: 38288980 DOI: 10.1080/14760584.2024.2310807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/23/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND This study aimed to evaluate VE of primary, first, and second booster ancestral-strain monovalent mRNA COVID-19 vaccination against symptomatic infections and severe diseases in Japan. METHODS We conducted a test-negative case-control study. We included medically attended episodes and hospitalizations involving individuals aged ≥ 16 with signs and symptoms from July to November 2022, when Omicron BA.5 was dominant nationwide. To evaluate VE, we calculated adjusted ORs of vaccination among test-positive versus test-negative individuals using a mixed-effects logistic regression. RESULTS For VE against symptomatic infections among individuals aged 16 to 59, VE of primary vaccination at > 180 days was 26.1% (95% CI: 10.6-38.8%); VE of the first booster was 58.5% (48.4-66.7%) at ≤ 90 days, decreasing to 41.1% (29.5-50.8%) at 91 to 180 days. For individuals aged ≥ 60, VE of the first booster was 42.8% (1.7-66.7%) at ≤ 90 days, dropping to 15.4% (-25.9-43.2%) at 91 to 180 days, and then increasing to 44.0% (16.4-62.5%) after the second booster. For VE against severe diseases, VE of the first and second booster was 77.3% (61.2-86.7%) at ≤ 90 days and 55.9% (23.4-74.6%) afterward. CONCLUSION mRNA booster vaccination provided moderate protection against symptomatic infections and high-level protection against severe diseases during the BA.5 epidemic in Japan.
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Affiliation(s)
- Haruka Maeda
- Department of Respiratory Infections, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Department of Clinical Tropical Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Nobuo Saito
- Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Ataru Igarashi
- School of Data Science, Yokohama City University School of Medicine, Kanagawa, Japan
- Department of Health Economics and Outcomes Research, Graduate School of Pharmaceutical Sciences, the University of Tokyo, Tokyo, Japan
| | - Masayuki Ishida
- Department of Infectious Disease Medicine, Chikamori Hospital, Kochi, Japan
| | - Mayumi Terada
- Department of Internal Medicine, Nijigaoka Hospital, Nagasaki, Japan
| | - Shingo Masuda
- Department of Infectious Diseases, Nagasaki University Hospital, Nagasaki, Japan
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Ryosuke Osawa
- Department of Infectious Diseases, Kameda Medical Center, Chiba, Japan
| | - Naoto Hosokawa
- Department of Infectious Diseases, Kameda Medical Center, Chiba, Japan
| | - Kei Nakashima
- Department of Pulmonology, Kameda Medical Center, Chiba, Japan
| | | | - Haruki Imura
- Department of Infectious Disease Medicine, Rakuwakai Otowa Hospital, Kyoto, Japan
| | - Hiroki Inoue
- Department of Infectious Disease Medicine, Rakuwakai Otowa Hospital, Kyoto, Japan
| | - Suguru Matsuzaka
- Department of General Medicine, Fukuoka Seishukai Hospital, Fukuoka, Japan
| | - Yukihiro Sugimoto
- Department of Respiratory Medicine, Fukuoka Seishukai Hospital, Fukuoka, Japan
| | | | - Iori Motohashi
- Department of General Internal Medicine, Kawasaki Municipal Tama Hospital, Kawasaki, Japan
| | - Toru Morikawa
- Department of General Medicine, Nara City Hospital, Nara, Japan
| | - Rentaro Oda
- Department of Infectious Diseases, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Yuiko Hoshina
- Department of Infectious Diseases, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Takashi Matono
- Department of Infectious Diseases, Aso Iizuka Hospital, Fukuoka, Japan
- Division of Infectious Disease and Hospital Epidemiology, Saga University Hospital, Saga, Japan
| | | | - Eiichiro Sando
- Department of General Internal Medicine and Clinical Infectious Diseases, Kita-Fukushima Medical Center, Date, Japan
- Department of General Internal Medicine and Clinical Infectious Diseases, Fukushima Medical University, Fukushima, Japan
| | - Sadaharu Asami
- Department of Cardiology, Musashino Tokushukai Hospital, Tokyo, Japan
| | - Satoshi Kudo
- Department of Nursing, Musashino Tokushukai Hospital, Tokyo, Japan
| | - Noboru Akizuki
- Department of Emergency Medicine, Musashino Tokushukai Hospital, Tokyo, Japan
| | - Yoshikazu Muto
- Department of Infectious Diseases, Tosei General Hospital, Seto, Japan
| | | | - Tomoo Kishaba
- Department of Respiratory Medicine, Okinawa Chubu Hospital, Okinawa, Japan
| | | | - Yoshinao Kubo
- Department of Clinical Tropical Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Motoi Suzuki
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Konosuke Morimoto
- Department of Respiratory Infections, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
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Maltezou HC, Ledda C, Sipsas NV. Absenteeism of Healthcare Personnel in the COVID-19 Era: A Systematic Review of the Literature and Implications for the Post-Pandemic Seasons. Healthcare (Basel) 2023; 11:2950. [PMID: 37998442 PMCID: PMC10671277 DOI: 10.3390/healthcare11222950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
This systematic review aimed to assess COVID-19-associated absenteeism among healthcare personnel (HCP). PubMed was searched on 4 February 2023. Inclusion criteria were the presentation of original data on COVID-19-associated absenteeism among HCP. Exclusion criteria were absenteeism associated with burnout, mental health illness, post-COVID syndrome, or child-care. Nineteen articles were identified; fifteen concerned almost exclusively the first pandemic year. Hospitals accounted for most data. There was heterogeneity across studies in terms of presentation of absenteeism data. Before COVID-19 vaccines became available, COVID-19 was a major driver of HCP absenteeism with excess costs, while the mean duration of absenteeism ranged from 5.82 to 33 days per episode of absence. Determinant factors of absenteeism rates were department of employment, high-risk exposure, age, profession, and work experience of HCP, suspected COVID-19, SARS-CoV-2 testing, SARS-CoV-2 positivity, and return-to-work strategy. Two studies demonstrated that COVID-19 vaccination significantly reduced the burden of absenteeism. Routine testing of asymptomatic HCP and use of personal protective equipment also significantly ameliorated absenteeism. In conclusion, COVID-19 has been a major driver of HCP absenteeism. Research is needed to assess how COVID-19 will impact HCP in the next years, considering the new SARS-CoV-2 variants, the co-circulation of other respiratory viruses, and the newer COVID-19 vaccines. Networks are needed to survey morbidity and absenteeism among HCP in real-time and guide vaccination policies.
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Affiliation(s)
- Helena C. Maltezou
- Directorate of Research, Studies and Documentation, National Public Health Organization, 3-5 Agrafon Street, Marousi, 15123 Athens, Greece
| | - Caterina Ledda
- Occupational Medicine, Department of Clinical and Experimental Medicine, University of Catania, 87 Santa Sofia Street, 95124 Catania, Italy;
| | - Nikolaos V. Sipsas
- Pathophysiology Department, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527 Athens, Greece;
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Basoulis D, Tsakanikas A, Gkoufa A, Bitsani A, Karamanakos G, Mastrogianni E, Georgakopoulou VE, Makrodimitri S, Voutsinas PM, Lamprou P, Kontos A, Tsiakas S, Gamaletsou MN, Marinaki S, Sipsas NV. Effectiveness of Oral Nirmatrelvir/Ritonavir vs. Intravenous Three-Day Remdesivir in Preventing Progression to Severe COVID-19: A Single-Center, Prospective, Comparative, Real-Life Study. Viruses 2023; 15:1515. [PMID: 37515201 PMCID: PMC10383489 DOI: 10.3390/v15071515] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 06/28/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Nirmatrelvir/ritonavir (NMV/r) and three-day course remdesivir (3RDV) have been approved as early treatments for COVID-19 outpatients not requiring supplemental oxygen. Real-life data on the efficacy of antivirals among immunocompromised patients or directly comparing their effectiveness in preventing hospitalization and/or death are scarce. METHODS Prospective, observational study conducted in a tertiary care hospital, from 1 January 2022 until 15 March 2023, during the prevalence of the Omicron variant. Inverse probability of treatment weighting (IPTW) was used to account for differences between treatment groups. RESULTS We included 521, mainly immunocompromised (56%), patients in our analysis; 356 (68.3%) received 3RDV and 165 (31.7%) NMV/r. Overall, 15/521 (2.9%) patients met the primary end-point of hospitalization at 30 days (3RDV arm: 10/356, 2.8% vs. NMV/r arm: 5/165, 3%, p = 1). On IPTW-adjusted univariable analysis, the choice of treatment did not affect outcomes. In multivariable logistic regression analysis, we found that one (OR 0.26, 95%CI 0.07-0.99, p = 0.049) or two (OR 0.06, 95%CI 0.01-0.55, p = 0.014) vaccine booster shots reduced the risk for adverse outcomes. CONCLUSION In our patient population of high-risk, mainly immunocompromised, vaccinated patients during the prevalence of the Omicron variant, NMV/r and 3RDV were equally effective early treatments for the prevention of hospitalization and/or death.
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Affiliation(s)
- Dimitrios Basoulis
- Infectious Diseases Unit, Laiko General Hospital, 115 27 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, 115 27 Athens, Greece
| | | | - Aikaterini Gkoufa
- Infectious Diseases Unit, Laiko General Hospital, 115 27 Athens, Greece
| | - Aikaterini Bitsani
- Infectious Diseases Unit, Laiko General Hospital, 115 27 Athens, Greece
- Haematology Clinic and Bone Marrow Transplantation Unit, Laiko General Hospital, 115 27 Athens, Greece
| | | | | | - Vasiliki E Georgakopoulou
- Infectious Diseases Unit, Laiko General Hospital, 115 27 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, 115 27 Athens, Greece
| | | | | | - Panagiota Lamprou
- Pulmonology Department, Laiko General Hospital, 115 27 Athens, Greece
| | - Athanasios Kontos
- Department of Pathophysiology, Laiko General Hospital, 115 27 Athens, Greece
| | - Stathis Tsiakas
- Department of Nephrology and Renal Transplantation, Laiko General Hospital, 115 27 Athens, Greece
| | | | - Smaragdi Marinaki
- Department of Nephrology and Renal Transplantation, Laiko General Hospital, 115 27 Athens, Greece
- Medical School, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Nikolaos V Sipsas
- Infectious Diseases Unit, Laiko General Hospital, 115 27 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, 115 27 Athens, Greece
- Medical School, National and Kapodistrian University of Athens, 115 27 Athens, Greece
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6
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Marchese AM, Zhou X, Kinol J, Underwood E, Woo W, McGarry A, Beyhaghi H, Áñez G, Toback S, Dunkle LM. NVX-CoV2373 vaccine efficacy against hospitalization: A post hoc analysis of the PREVENT-19 phase 3, randomized, placebo-controlled trial. Vaccine 2023; 41:3461-3466. [PMID: 37127523 PMCID: PMC10148668 DOI: 10.1016/j.vaccine.2023.04.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/03/2023]
Abstract
PREVENT-19, the pivotal phase 3 trial of the Novavax adjuvanted, recombinant spike protein COVID-19 vaccine (NVX-CoV2373), demonstrated that the vaccine was well tolerated and efficacious (vaccine efficacy, VE = 90%) for the prevention of symptomatic COVID-19. In the trial, participants were randomly assigned in a 2:1 ratio to receive 2 doses of NVX-CoV2373 or placebo 21 days apart. Throughout the study, the predominant SARS-CoV-2 variant was alpha, but additional variants were in circulation (i.e., beta, gamma, epsilon, and iota). VE among the per-protocol efficacy analysis population was calculated according to pre-specified disease severity (mild, moderate, or severe) criteria, but the impact on the risk of COVID-19-associated hospitalization was not specifically investigated. During this analysis period (January 25, 2021, to April 30, 2021 [95 days]), 4 hospitalizations occurred among the 77 events analyzed for the primary endpoint using the per-protocol population, 0 among vaccine recipients and 4 among placebo recipients, yielding a post hoc VE against hospitalization of 100% (95% CI: 28.8, 100). Among an expanded efficacy population, also identified post hoc, which included COVID-19-associated hospitalizations without a requirement for diagnostic polymerase chain reaction testing performed at the study central laboratory, 12 total hospitalizations were identified, 0 among vaccine recipients and 12 among placebo recipients, yielding a post hoc VE against hospitalization of 100% (95% CI: 83.1, 100). These additional data from the PREVENT-19 trial provide relevant public health information concerning the attributes of NVX-CoV2373.
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Affiliation(s)
| | - Xiang Zhou
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - John Kinol
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Eddie Underwood
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Wayne Woo
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Alice McGarry
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Hadi Beyhaghi
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Germán Áñez
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Seth Toback
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
| | - Lisa M Dunkle
- Novavax, Inc., 21 Firstfield Rd., Gaithersburg, MD 20878, USA.
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