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Levin MJ, Divino V, Postma MJ, Pelton SI, Zhou Z, DeKoven M, Mould-Quevedo J. A clinical and economic assessment of adjuvanted trivalent versus standard egg-derived quadrivalent influenza vaccines among older adults in the United States during the 2018-19 and 2019-20 influenza seasons. Expert Rev Vaccines 2024; 23:124-136. [PMID: 38073493 DOI: 10.1080/14760584.2023.2293237] [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: 08/09/2023] [Accepted: 12/06/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND Clinical evidence supports use of enhanced influenza vaccines in older adults. Few economic outcome studies have compared adjuvanted trivalent inactivated (aIIV3) and standard egg-derived quadrivalent inactivated influenza vaccines (IIV4e). RESEARCH DESIGN AND METHODS A retrospective cohort study was conducted leveraging deidentified US hospital data linked to claims data during the 2018-19 and 2019-20 influenza seasons. Relative vaccine effectiveness (rVE) was compared in adults aged ≥ 65 years receiving aIIV3 or IIV4e using inverse probability of treatment weighting (IPTW) and Poisson regression. An economic assessment quantified potential real-world cost savings. RESULTS The study included 715,807 aIIV3 and 320,991 IIV4e recipients in the 2018-19 and 844,169 aIIV3 and 306,270 IIV4e recipients in the 2019-20 influenza seasons. aIIV3 was significantly more effective than IIV4e in preventing cardiorespiratory disease (2018-19 rVE = 6.2%; and 2019-20 rVE = 6.0%) and respiratory disease (2018-19 rVE = 8.9%; and 2019-20 rVE = 10.1%). During the 2018-19 influenza season cardiorespiratory hospitalization cost savings for the aIIV3 population were $392 M, and $221 M for the 2019-20 season. Respiratory hospitalization cost savings for the aIIV3 population were $145 M and $97 M, respectively. CONCLUSIONS Our findings suggest that aIIV3 provides clinical and economic advantages versus IIV4e in the elderly.
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Affiliation(s)
- Myron J Levin
- Departments of Pediatrics and Medicine, Anschutz Medical Campus, University of Colorado, Aurora, CO, USA
| | | | - Maarten J Postma
- Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Economics, Econometrics and Finance, Faculty of Economics and Business, University of Groningen, Groningen, The Netherlands
- Centre of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung, Indonesia
| | - Stephen I Pelton
- Department of Pediatrics, Boston University School of Medicine, Boston, MA, USA
- Division of Pediatric Infectious Diseases, Maxwell Finland Laboratory, Boston Medical Center, Boston, MA, USA
| | - Zifan Zhou
- Real World Solutions, IQVIA, Falls Church, VA, USA
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Grabenstein JD, Ferrara P, Mantovani LG, McGovern I. Evaluating risk of bias using ROBINS-I tool in nonrandomized studies of adjuvanted influenza vaccine. Vaccine 2023; 41:7409-7418. [PMID: 37953097 DOI: 10.1016/j.vaccine.2023.11.005] [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: 07/09/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023]
Abstract
Seasonal variation in influenza vaccine effectiveness (VE) makes real-world evidence (RWE) useful in supplementing the clinical-evidence base from randomized clinical trials. Adjuvanted inactivated influenza vaccine (aIIV) VE has been evaluated in multiple nonrandomized RWE studies. A systematic literature review of RWE studies evaluating the absolute or relative VE of aIIV was conducted. Identified studies were assessed by evaluators for risk of bias (RoB) by means of the ROBINS-I (Reduction of Bias In Non-randomized Studies of Interventions) tool to inform evidence-based medicine deliberations. Differences in evaluator assessments were resolved by consensus. The literature review yielded 14 follow-up studies, seven test-negative case-control (TNCC) studies, five traditional case-control studies, and one cluster-randomized clinical trial. Most follow-up studies and three TNCC studies were judged at low RoB. Issues increasing RoB included inadequate control of confounding, selection of controls, and reliance on recall of vaccination. The concerns identified in any of the designs could be mitigated with straightforward revisions to design or implementation. 17 of 27 nonrandomized studies of adjuvanted influenza-vaccine effectiveness, some from each of four study designs, were judged at low risk of material bias. These studies merit credence in assessing aIIV effectiveness relative to other influenza vaccines.
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Affiliation(s)
| | - Pietro Ferrara
- Center for Public Health Research, University of Milan-Bicocca, Monza, Italy; Laboratory of Public Health, Istituto Auxologico Italiano - IRCCS, Milan, Italy
| | - Lorenzo G Mantovani
- Center for Public Health Research, University of Milan-Bicocca, Monza, Italy; Laboratory of Public Health, Istituto Auxologico Italiano - IRCCS, Milan, Italy
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Pestarino L, Domnich A, Orsi A, Bianchi F, Cannavino E, Brasesco PC, Russo G, Valbonesi S, Vallini G, Ogliastro M, Icardi G. Rollout of the 2022/2023 Seasonal Influenza Vaccination and Correlates of the Use of Enhanced Vaccines among Italian Adults. Vaccines (Basel) 2023; 11:1748. [PMID: 38140153 PMCID: PMC10747154 DOI: 10.3390/vaccines11121748] [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: 11/06/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
In Italy, several types of seasonal influenza vaccines (SIVs) are available for older adults, but for the 2022/2023 season there were no guidelines on their specific use. This cross-sectional study assessed the frequency and determinants of the use of enhanced (adjuvanted and high-dose) SIVs in Italian older adults, as compared to standard-dose non-adjuvanted formulations. Of 1702 vaccines administered to a representative outpatient sample of adults aged ≥ 60 years and residing in Genoa, 69.5% were enhanced SIVs. Older age (adjusted odds ratio (aOR) for each 1-year increase 1.10; p < 0.001), and the presence of cardiovascular disease (aOR 1.40; p = 0.011) and diabetes (aOR 1.62; p = 0.005) were associated with the use of enhanced vaccines. Compared with the adjuvanted SIV, subjects immunized with the high-dose vaccine were older (aOR for each 1-year increase 1.05; p < 0.001) and had higher prevalence of respiratory diseases (aOR 1.85; p = 0.052). Moreover, usage of the enhanced SIVs was driven by the period of immunization campaign, place of vaccination and physician. Despite their superior immunogenicity and effectiveness, the adoption of enhanced SIVs in Italy is suboptimal, and should be increased. Enhanced formulations are mostly used in the oldest, and in subjects with some co-morbidities.
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Affiliation(s)
- Luca Pestarino
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
- Medicoop Liguria, 16122 Genoa, Italy;
| | - Alexander Domnich
- Hygiene Unit, San Martino Policlinico Hospital-IRCCS for Oncology and Neurosciences, 16132 Genoa, Italy; (A.O.); (G.I.)
| | - Andrea Orsi
- Hygiene Unit, San Martino Policlinico Hospital-IRCCS for Oncology and Neurosciences, 16132 Genoa, Italy; (A.O.); (G.I.)
- Department of Health Sciences (DISSAL), University of Genoa, 16132 Genoa, Italy;
- Interuniversity Research Center on Influenza and Other Transmissible Infections (CIRI-IT), 16132 Genoa, Italy
| | - Federico Bianchi
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
| | - Elisa Cannavino
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
| | - Pier Claudio Brasesco
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
- Medicoop Liguria, 16122 Genoa, Italy;
| | - Gianluca Russo
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
- Medicoop Liguria, 16122 Genoa, Italy;
| | - Simone Valbonesi
- Private General Practice, 16122 Genoa, Italy; (L.P.); (F.B.); (E.C.); (P.C.B.); (G.R.); (S.V.)
- Medicoop Liguria, 16122 Genoa, Italy;
| | | | - Matilde Ogliastro
- Department of Health Sciences (DISSAL), University of Genoa, 16132 Genoa, Italy;
| | - Giancarlo Icardi
- Hygiene Unit, San Martino Policlinico Hospital-IRCCS for Oncology and Neurosciences, 16132 Genoa, Italy; (A.O.); (G.I.)
- Department of Health Sciences (DISSAL), University of Genoa, 16132 Genoa, Italy;
- Interuniversity Research Center on Influenza and Other Transmissible Infections (CIRI-IT), 16132 Genoa, Italy
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He X, Zhang T, Huan S, Yang Y. Novel Influenza Vaccines: From Research and Development (R&D) Challenges to Regulatory Responses. Vaccines (Basel) 2023; 11:1573. [PMID: 37896976 PMCID: PMC10610648 DOI: 10.3390/vaccines11101573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Influenza vaccines faced significant challenges in achieving sufficient protective efficacy and production efficiency in the past. In recent decades, novel influenza vaccines, characterized by efficient and scalable production, advanced platforms, and new adjuvant technologies, have overcome some of these weaknesses and have been widely licensed. Furthermore, researchers are actively pursuing the development of next-generation and universal influenza vaccines to provide comprehensive protection against potential pandemic subtypes or strains. However, new challenges have emerged as these novel vaccines undergo evaluation and authorization. In this review, we primarily outline the critical challenges and advancements in research and development (R&D) and highlight the improvements in regulatory responses for influenza vaccines.
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Affiliation(s)
- Xiangchuan He
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China; (X.H.); (T.Z.)
- Key Laboratory of Innovative Drug Research and Evaluation, National Medical Products Administration, Beijing 100084, China
- Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Tianxiang Zhang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China; (X.H.); (T.Z.)
- Key Laboratory of Innovative Drug Research and Evaluation, National Medical Products Administration, Beijing 100084, China
| | - Shitong Huan
- China Office, The Bill & Melinda Gates Foundation, Beijing 100084, China
| | - Yue Yang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China; (X.H.); (T.Z.)
- Key Laboratory of Innovative Drug Research and Evaluation, National Medical Products Administration, Beijing 100084, China
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5
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McGovern I, Sardesai A, Taylor A, Toro-Diaz H, Haag M. Additional Burden Averted in the United States From Use of MF59-Adjuvanted Seasonal Influenza Vaccine Compared With Standard Seasonal Influenza Vaccine Among Adults ≥65 Years. Open Forum Infect Dis 2023; 10:ofad429. [PMID: 37601726 PMCID: PMC10438869 DOI: 10.1093/ofid/ofad429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/08/2023] [Indexed: 08/22/2023] Open
Abstract
Background The MF59-adjuvanted trivalent inactivated influenza vaccine (aIIV3) is designed to overcome immunosenescence and enhance vaccine responses in older adults. We expanded on the Centers for Disease Control and Prevention (CDC) modeling method to estimate the number of additional influenza-related outcomes averted with aIIV3 versus generic quadrivalent inactivated influenza vaccine (IIV4) in adults ≥65 years over 3 influenza seasons (2017-2018 to 2019-2020) in the United States. Methods A static compartmental model was developed based on an existing CDC model with 2 previously recommended calculation methods that increased the accuracy of the model in providing estimates of burden averted. Model inputs included vaccine effectiveness, vaccine coverage, population counts, and disease burden estimates. Additional burden averted (symptomatic cases, outpatient visits, hospitalizations, intensive care unit [ICU] admissions, and deaths) was expressed as total incremental cases averted between the vaccines. Sensitivity analyses tested the resilience of the model results to uncertainties in model inputs. Results The model estimated that vaccination with aIIV3 versus IIV4 would avert 2.24 times as many symptomatic cases, outpatient visits, hospitalizations, ICU stays, and deaths during 2017-2018; the burden averted in 2018-2019 and 2019-2020 with aIIV3 would be 3.44 and 1.72 times that averted with IIV4, respectively. Disease burden estimates and relative vaccine effectiveness of aIIV3 had the greatest impact on model estimates. Conclusions Over 3 influenza seasons, the model estimated that aIIV3 was more effective than IIV4 in averting influenza-related outcomes, preventing 1.72 to 3.44 times as many influenza illnesses with proportionate decreases in related healthcare use and complications.
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Affiliation(s)
- Ian McGovern
- Seqirus USA Inc, Center for Outcomes Research and Epidemiology, Cambridge, Massachusetts, USA
| | - Aditya Sardesai
- Evidera, Evidence Synthesis, Modeling & Communication, San Francisco, California, USA
| | - Alexandra Taylor
- Evidera, Evidence Synthesis, Modeling & Communication, San Francisco, California, USA
| | - Hector Toro-Diaz
- Evidera, Evidence Synthesis, Modeling & Communication, Bethesda, Maryland, USA
| | - Mendel Haag
- Seqirus Netherlands BV, Center for Outcomes Research and Epidemiology, Amsterdam, The Netherlands
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Bulloch MN. Treatment and prevention of influenza in geriatric patients. Expert Rev Clin Pharmacol 2023; 16:825-841. [PMID: 37526068 DOI: 10.1080/17512433.2023.2243221] [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: 05/01/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
INTRODUCTION Older adults are the most vulnerable population to the effects of influenza. These patients have age-related characteristics that make response to both infection and therapeutics different than younger patients. AREAS COVERED Influenza vaccination and antiviral therapy are the foundational approaches to preventing and treating influenza in geriatric patients. Older adults should receive one of the three enhanced vaccines before influenza season beings. There are five antivirals used in influenza. Geriatric patients have been under-enrolled in antiviral studies but have been included in small numbers. Oseltamivir has the most abundant evidence, including in the hospital and long-term care (LTC) facilities, and the strongest evidence for reducing mortality and complications. Peramivir offers the shortest time for symptom alleviation, while baloxavir is best tolerated. EXPERT OPINION Oseltamivir has the most versatility in preventing and treating influenza in geriatric patients. Parenteral peramivir and zanamivir are second-line alternatives for complicated influenza when oseltamivir cannot be used. Single-dose peramivir and baloxavir are attractive alternatives to oseltamivir in uncomplicated influenza but will not increase in utilization until more evidence is available regarding mortality and complications, particularly in hospitalized and LTC patients. More studies, including comparative trials, are required to elucidate the role in therapy for each therapeutic in the geriatric population.
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Affiliation(s)
- Marilyn N Bulloch
- Auburn University Harrison College of Pharmacy, Auburn, Alabama, United States
- Department of Family, Internal, and Rural Medicine, University of Alabama Heersink School of Medicine and University of Alabama College of Community Health Sciences, Tuscaloosa, Alabama, United States
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Relative Vaccine Effectiveness of Adjuvanted Trivalent Influenza Vaccine over Three Consecutive Influenza Seasons in the United States. Vaccines (Basel) 2022; 10:vaccines10091456. [PMID: 36146534 PMCID: PMC9504704 DOI: 10.3390/vaccines10091456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/26/2022] Open
Abstract
Traditional influenza vaccines may be less immunogenic in adults ≥65 years of age due to immunosenescence. Two influenza vaccines—MF59®-adjuvanted trivalent inactivated influenza vaccine (aIIV3) and high-dose influenza vaccine (HD-IIV3)—were developed to overcome this problem. We summarize estimates of the relative vaccine effectiveness (rVE) of aIIV3 vs. HD-IIV3 and aIIV3 vs. standard, egg-based quadrivalent influenza vaccines (IIV4e) during the 2017–2018, 2018–2019, and 2019–2020 US influenza seasons using the same underlying electronic medical record and linked claims dataset for all three seasons. The primary outcome was influenza-related medical encounters (IRMEs), defined by diagnostic codes specific to influenza (ICD J09*-J11*). rVE was estimated using propensity score methods adjusting for demographics and health status. rVE estimates demonstrated consistent benefit for aIIV3 over IIV4e in the overall and at-risk populations. Relative to HD-IIV3, aIIV3 provided improved benefit in the overall study population and comparable benefit in the at-risk population across each season.
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8
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An Economic Evaluation of the Adjuvanted Quadrivalent Influenza Vaccine Compared with Standard-Dose Quadrivalent Influenza Vaccine in the Spanish Older Adult Population. Vaccines (Basel) 2022; 10:vaccines10081360. [PMID: 36016247 PMCID: PMC9412909 DOI: 10.3390/vaccines10081360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Standard-dose quadrivalent influenza vaccines (QIV) are designed to provide protection against all four influenza strains. Adjuvanted QIV (aQIV), indicated for individuals aged 65+ years, combines MF59® adjuvant (an oil-in-water emulsion of squalene oil) with a standard dose of antigen, and is designed to produce stronger and longer immune response, especially in the elderly where immunosenescence reduces vaccine effectiveness. This study evaluated the cost-effectiveness of aQIV vs. egg-based standard-dose QIV (QIVe) in the elderly population, from the payer and societal perspective in Spain. A dynamic transmission model, which accounts for herd protection, was used to predict the number of medically attended infections in Spain. A decision tree structure was used to forecast influenza-related costs and benefits. Influenza-related probabilities of outpatient visit, hospitalization, work absenteeism, mortality, and associated utilities and costs were extracted from Spanish and European published literature. Relative vaccine effectiveness (rVE) was sourced from two different meta-analyses: the first meta-analysis was informed by laboratory-confirmed influenza studies only, resulting in a rVE = 34.6% (CI95% 2-66%) in favor of aQIV; the second meta-analysis included real world evidence influenza-related medical encounters outcomes, resulting in a rVE = 13.9% (CI95% 4.2-23.5%) in benefit of aQIV. All costs were expressed in 2021 euros. Results indicate that replacing QIVe with aQIV in the Spanish elderly population would prevent on average 43,664 influenza complicated cases, 1111 hospitalizations, and 569 deaths (with a rVE = 34.6%) or 19,104 influenza complicated cases, 486 hospitalizations, and 252 deaths (with a rVE = 13.9%). When the rVE of aQIV vs. QIVe is 34.6%, the incremental cost per quality adjusted life years (QALY) gained was €2240 from the payer; from the societal perspective, aQIV was cost saving compared with QIVe. If the rVE was 13.9%, the incremental cost per QALY was €6694 and €3936 from the payer and societal perspective, respectively. Sensitivity analyses validated the robustness of these findings. Results indicate that replacing QIVe with aQIV in the Spanish elderly population is a cost-effective strategy for the Spanish healthcare system.
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Gärtner BC, Weinke T, Wahle K, Kwetkat A, Beier D, Schmidt KJ, Schwarz TF. Importance and value of adjuvanted influenza vaccine in the care of older adults from a European perspective - A systematic review of recently published literature on real-world data. Vaccine 2022; 40:2999-3008. [PMID: 35459556 DOI: 10.1016/j.vaccine.2022.04.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/21/2022] [Accepted: 04/04/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND There is an urgent need for improved influenza vaccines especially for older adults due to the presence of immunosenescence. It is therefore highly relevant to compare enhanced influenza vaccines with traditional influenza vaccines with respect to their effectiveness. OBJECTIVE To compare vaccine efficacy and effectiveness of adjuvanted influenza vaccines (aTIV/aQIV) vs. non-adjuvanted standard-dose (TIV/QIV) and high-dose (TIV-HD/QIV-HD) influenza vaccines regarding influenza-related outcomes in older adults, complementing findings from the European Centre for Disease Prevention and Control (ECDC)'s systematic review of enhanced seasonal influenza vaccines from February 2020. METHODS A systematic literature search was conducted in Embase and MEDLINE to identify randomised controlled trials, observational studies and systematic reviews, published since ECDC's systematic review (between 7 February 2020 and 6 September 2021). Included studies were appraised with either the Cochrane Risk of Bias tool, ROBINS-I or AMSTAR 2. RESULTS Eleven analyses from nine real-world evidence (RWE) studies comprising ∼53 million participants and assessing the relative vaccine effectiveness (rVE) of aTIV vs. TIV, QIV and/or TIV-HD in adults aged ≥65 years over the 2006/07-2008/09 and 2011/12-2019/20 influenza seasons were identified. Nine analyses found that aTIV was significantly more effective than TIV and QIV in reducing influenza-related outcomes by clinical setting and suspected influenza outbreaks (rVE ranging from 7.5% to 25.6% for aTIV vs. TIV and 7.1% to 36.3% for aTIV vs. QIV). Seven analyses found similar effectiveness of aTIV vs. TIV-HD in reducing influenza-related medical encounters, inpatient stays and hospitalisations/emergency room visits. In three analyses, aTIV was significantly more effective than TIV-HD in reducing influenza-related medical encounters and office visits (rVE ranging from 6.6% to 16.6%). Risk of bias of identified studies was moderate to high. CONCLUSIONS Our study suggests that both adjuvanted and high-dose vaccines are effective alternatives for vaccination programmes in older adults and preferable over conventional standard-dose vaccines.
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Affiliation(s)
- B C Gärtner
- Institute for Medical Microbiology and Hygiene, Saarland University Hospital and Medical Faculty of Saarland University, Kirrberger Straße, Building 43, 66421 Homburg/Saar, Germany
| | - T Weinke
- Clinic of Gastroenterology and Infectiology, Ernst von Bergmann Klinikum, Charlottenstraße 72, 14467 Potsdam, Germany
| | - K Wahle
- University of Münster, Schlossplatz 2, 48149 Münster, Germany
| | - A Kwetkat
- Department of Geriatrics, Jena University Hospital, Bachstraße 18, 07743 Jena, Germany
| | - D Beier
- Member of Saxon Committee on Vaccinations (SIKO), Elisabeth-Reichelt-Weg 35, 09116 Chemnitz, Germany
| | - K J Schmidt
- Xcenda GmbH, Lange Laube 31, 30159 Hannover, Germany
| | - T F Schwarz
- Institute of Laboratory Medicine and Vaccination Centre, Klinikum Würzburg Mitte, Standort Juliusspital, Salvatorstraße 7, 97074 Würzburg, Germany.
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10
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Integrating Electronic Medical Records and Claims Data for Influenza Vaccine Research. Vaccines (Basel) 2022; 10:vaccines10050727. [PMID: 35632483 PMCID: PMC9143116 DOI: 10.3390/vaccines10050727] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/13/2022] [Accepted: 04/26/2022] [Indexed: 12/10/2022] Open
Abstract
Real-world evidence (RWE) increasingly informs public health and healthcare decisions worldwide. A large database has been created (“Integrated Dataset”) that integrates primary care electronic medical records with pharmacy and medical claims data on >123 million US patients since 2014. This article describes the components of the Integrated Dataset and evaluates its representativeness to the US population and its potential use in evaluating influenza vaccine effectiveness. Representativeness to the US population (2014−2019) was evaluated by comparison with demographic information from the 2019 US census and the National Ambulatory Medical Care Survey (NAMCS). Variables included in the Integrated Dataset were evaluated against World Health Organization (WHO) defined key and non-critical variables for evaluating influenza vaccine performance. The Integrated Dataset contains a variety of information, including demographic data, patient medical history, diagnoses, immunizations, and prescriptions. Distributions of most age categories and sex were comparable with the US Census and NAMCS populations. The Integrated Dataset was less diverse by race and ethnicity. Additionally, WHO key and non-critical variables for the estimation of influenza vaccine effectiveness are available in the Integrated Dataset. In summary, the Integrated Dataset is generally representative of the US population and contains key variables for the assessment of influenza vaccine effectiveness.
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11
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Influenza Viruses and Vaccines: The Role of Vaccine Effectiveness Studies for Evaluation of the Benefits of Influenza Vaccines. Vaccines (Basel) 2022; 10:vaccines10050714. [PMID: 35632470 PMCID: PMC9143275 DOI: 10.3390/vaccines10050714] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 02/04/2023] Open
Abstract
Influenza is a vaccine preventable disease and vaccination remains the most effective method of controlling the morbidity and mortality of seasonal influenza, especially with respect to risk groups. To date, three types of influenza vaccines have been licensed: inactivated, live-attenuated, and recombinant haemagglutinin vaccines. Effectiveness studies allow an assessment of the positive effects of influenza vaccines in the field. The effectiveness of current influenza is suboptimal, being estimated as 40% to 60% when the vaccines strains are antigenically well-matched with the circulating viruses. This review focuses on influenza viruses and vaccines and the role of vaccine effectiveness studies for evaluating the benefits of influenza vaccines. Overall, influenza vaccines are effective against morbidity and mortality in all age and risk groups, especially in young children and older adults. However, the effectiveness is dependent on several factors such as the age of vaccinees, the match between the strain included in the vaccine composition and the circulating virus, egg-adaptations occurring during the production process, and the subject’s history of previous vaccination.
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12
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Shapiro JR, Morgan R, Leng SX, Klein SL. Roadmap for Sex-Responsive Influenza and COVID-19 Vaccine Research in Older Adults. FRONTIERS IN AGING 2022; 3:836642. [PMID: 35821800 PMCID: PMC9261334 DOI: 10.3389/fragi.2022.836642] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/19/2022] [Indexed: 01/06/2023]
Abstract
Sex differences in the immune system are dynamic throughout the lifespan and contribute to heterogeneity in the risk of infectious diseases and the response to vaccination in older adults. The importance of the intersection between sex and age in immunity to viral respiratory diseases is clearly demonstrated by the increased prevalence and severity of influenza and COVID-19 in older males compared to older females. Despite sex and age biases in the epidemiology and clinical manifestations of disease, these host factors are often ignored in vaccine research. Here, we review sex differences in the immunogenicity, effectiveness, and safety of the influenza and COVID-19 vaccines in older adults and the impact of sex-specific effects of age-related factors, including chronological age, frailty, and the presence of comorbidities. While a female bias in immunity to influenza vaccines has been consistently reported, understanding of sex differences in the response to COVID-19 vaccines in older adults is incomplete due to small sample sizes and failure to disaggregate clinical trial data by both sex and age. For both vaccines, a major gap in the literature is apparent, whereby very few studies investigate sex-specific effects of aging, frailty, or multimorbidity. By providing a roadmap for sex-responsive vaccine research, beyond influenza and COVID-19, we can leverage the heterogeneity in immunity among older adults to provide better protection against vaccine-preventable diseases.
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Affiliation(s)
- Janna R. Shapiro
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Rosemary Morgan
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Sean X. Leng
- Division of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Sabra L. Klein
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
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Comber L, O Murchu E, Jordan K, Hawkshaw S, Marshall L, O'Neill M, Teljeur C, Ryan M, Carnahan A, Pérez Martín JJ, Robertson AH, Johansen K, de Jonge J, Krause T, Nicolay N, Nohynek H, Pavlopoulou I, Pebody R, Penttinen P, Soler-Soneira M, Wichmann O, Harrington P. Systematic review of the efficacy, effectiveness and safety of high-dose seasonal influenza vaccines for the prevention of laboratory-confirmed influenza in individuals ≥18 years of age. Rev Med Virol 2022; 33:e2330. [PMID: 35119149 DOI: 10.1002/rmv.2330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 12/24/2022]
Abstract
This review sought to assess the efficacy, effectiveness and safety of high-dose inactivated influenza vaccines (HD-IIV) for the prevention of laboratory-confirmed influenza in individuals aged 18 years or older. A systematic literature search was conducted in electronic databases and grey literature sources up to 7 February 2020. Randomised controlled trials (RCTs) and non-randomised studies of interventions (NRSIs) were included. The search returned 28,846 records, of which 36 studies were included. HD-IIV was shown to have higher relative vaccine efficacy in preventing influenza compared with standard-dose influenza vaccines (SD-IIV3) in older adults (Vaccine effectiveness (VE) = 24%, 95% CI 10-37, one RCT). One NRSI demonstrated significant effect for HD-IIV3 against influenza B (VE = 89%, 95% CI 47-100), but not for influenza A(H3N2) (VE = 22%, 95% CI -82 to 66) when compared with no vaccination in older adults. HD-IIV3 showed significant relative effect compared with SD-IIV3 for influenza-related hospitalisation (VE = 11.8%, 95% CI 6.4-17.0, two NRSIs), influenza- or pneumonia-related hospitalisation (VE = 13.7%, 95% CI 9.5-17.7, three NRSIs), influenza-related hospital encounters (VE = 13.1%, 95% CI 8.4-17.7, five NRSIs), and influenza-related office visits (VE = 3.5%, 95% CI 1.5-5.5, two NRSIs). For safety, HD-IIV were associated with significantly higher rates of local and systemic adverse events compared with SD-IIV (combined local reactions, pain at injection site, swelling, induration, headache, chills and malaise). From limited data, compared with SD-IIV, HD-IIV were found to be more effective in the prevention of laboratory-confirmed influenza, for a range of proxy outcome measures, and associated with more adverse events.
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Affiliation(s)
- Laura Comber
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Eamon O Murchu
- Health Information and Quality Authority (HIQA), Dublin, Ireland.,Department of Health Policy & Management, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Karen Jordan
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Sarah Hawkshaw
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Liam Marshall
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Michelle O'Neill
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Conor Teljeur
- Health Information and Quality Authority (HIQA), Dublin, Ireland
| | - Máirín Ryan
- Health Information and Quality Authority (HIQA), Dublin, Ireland.,Department of Pharmacology & Therapeutics, Trinity College Dublin, Trinity Health Sciences, Dublin, Ireland
| | - AnnaSara Carnahan
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Public Health Agency of Sweden, Solna, Sweden
| | - Jaime Jesús Pérez Martín
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,General Directorate of Public Health and Addictions, IMIB-Arrixaca, Murcia University, Region of Murcia, Spain
| | - Anna Hayman Robertson
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Kari Johansen
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Jorgen de Jonge
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,National Institute for Public Health and the Environment, Center for Infectious Disease Control, Bilthoven, The Netherlands
| | - Tyra Krause
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Statens Serum Institut, Copenhagen, Denmark
| | - Nathalie Nicolay
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Hanna Nohynek
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Ioanna Pavlopoulou
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Pediatric Research Laboratory, School of Health Sciences, Faculty of Nursing, National & Kapodistrian University of Athens, Goudi, Greece.,National Advisory Committee on Immunisation, Hellenic Ministry of Health, Athens, Greece
| | - Richard Pebody
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Institute of Epidemiology & Health, University College London, London, UK
| | - Pasi Penttinen
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Marta Soler-Soneira
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Vigilancia de Enfermedades Prevenibles por Vacunación, Centro Nacional de Epidemiología, Instituto de Salud Carlos III, Ministerio de Ciencia e Innovación, Madrid, Spain
| | - Ole Wichmann
- European Centre for Disease Prevention and Control, EU/EEA National Immunisation Technical Advisory Group (NITAG) Collaboration on Newer and Enhanced Inactivated Seasonal Influenza Vaccines, Solna, Sweden.,Immunization Unit, Robert Koch-Institute, Berlin, Germany
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14
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Muscatello DJ, Nazareno AL, Turner RM, Newall AT. Influenza-associated mortality in Australia, 2010 through 2019: High modelled estimates in 2017. Vaccine 2021; 39:7578-7583. [PMID: 34810002 DOI: 10.1016/j.vaccine.2021.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 12/14/2022]
Abstract
INTRODUCTION In Australia, the 2017 and 2019 influenza seasons were severe. High-dose or adjuvanted vaccines were introduced for ≥65 year-olds in 2018. AIM To compare influenza-associated mortality in 2017 and 2019 with the average for 2010-2019. METHODS We used time series modelling to obtain estimates of influenza-associated death rates for influenza A(H1N1)pdm09, A(H3N2) and B in Australia, in persons of all ages and <65, 65-74 and ≥75 years. Estimates were made for pneumonia and influenza (P&I, 2010-2018), respiratory (2010-2018), and all-cause outcomes (2010-2019). RESULTS During 2010 through 2018 (and 2019 for all-cause), influenza was estimated to be associated with an annual average of 2.1 (95% confidence interval (CI) 1.9, 2.4), 4.0 (95% CI 3.4, 4.6), and 11.6 (95% CI 8.4, 15.0) P&I, respiratory and all-cause deaths per 100,000 population, respectively. Influenza A(H1N1)pdm09 was estimated to be associated with less than one quarter of influenza-associated P&I and respiratory deaths, while A(H3N2) and B were each estimated to contribute approximately equally to the remaining influenza-associated deaths. In 2017, the respective rates were 7.8 (95% CI 7.1, 8.4), 12.3 (95% CI 10.9, 13.6) and 26.0 (95% CI 20.8, 32.0) per 100,000. In 2019, the all-cause estimate was 20.8 (95% CI 14.9, 26.7) per 100,000. CONCLUSIONS Seasonal influenza continues to be associated with substantial mortality in Australia, with at least double the average occurring in 2017. Age-specific monitoring of vaccine effectiveness is needed in Australia to understand higher mortality seasons.
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Affiliation(s)
- David J Muscatello
- School of Population Health, University of New South Wales, UNSW Sydney, NSW 2052, Australia.
| | - Allen L Nazareno
- School of Population Health, University of New South Wales, UNSW Sydney, NSW 2052, Australia; Institute of Mathematical Sciences and Physics, College of Arts and Sciences, University of the Philippines Los Baños, Philippines
| | - Robin M Turner
- School of Population Health, University of New South Wales, UNSW Sydney, NSW 2052, Australia; Biostatistics Centre, University of Otago, Dunedin 9054, New Zealand
| | - Anthony T Newall
- School of Population Health, University of New South Wales, UNSW Sydney, NSW 2052, Australia
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