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Leroux-Roels I, Van Ranst M, Vandermeulen C, Abeele CV, De Schrevel N, Salaun B, Verheust C, David MP, Kotb S, Hulstrøm V. Safety and Immunogenicity of a Revaccination With a Respiratory Syncytial Virus Prefusion F Vaccine in Older Adults: A Phase 2b Study. J Infect Dis 2024; 229:355-366. [PMID: 37699064 PMCID: PMC10873183 DOI: 10.1093/infdis/jiad321] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND In the previous (parent) study, 2 doses of different formulations of an investigational vaccine against respiratory syncytial virus (RSVPreF3 OA) were well tolerated and immunogenic in older adults. This multicenter phase 2b extension study assessed safety and immunogenicity of a revaccination (third) dose of the 120 μg RSVPreF3-AS01E formulation. METHODS In total, 122 older adults (60-80 years), previously vaccinated with 2 doses of RSVPreF3-AS01E formulations (containing 30, 60, or 120 μg RSVPreF3 antigen), received an additional 120 μg RSVPreF3-AS01E dose 18 months after dose 2. Vaccine safety was evaluated in all participants up to 6 months and immunogenicity in participants who received 120 μg RSVPreF3-AS01E doses until 1 month after dose 3. RESULTS Similar to the parent study, mostly mild-to-moderate solicited adverse events and no vaccine-related serious adverse events or potential immune-mediated disorders were reported. Neutralizing titers and cell-mediated immune responses persisted for 18 months after 2-dose vaccination. Dose 3 increased RSV-specific neutralizing titers against RSV-A and RSV-B and median CD4+ T-cell frequencies. After dose 3, RSV-specific neutralizing titers but not CD4+ T-cell frequencies were below levels detected 1 month after dose 1. CONCLUSIONS Revaccination with 120 μg RSVPreF3-AS01E 18 months after dose 2 is well tolerated and immunogenic in older adults. CLINICAL TRIALS REGISTRATION NCT04657198; EudraCT, 2020-000692-21.
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Affiliation(s)
- Isabel Leroux-Roels
- Centre for Vaccinology, Ghent University and Ghent University HospitalGhent, Belgium
| | - Marc Van Ranst
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Centre, Katholieke Universiteit Leuven, Leuven, Belgium
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Narejos Pérez S, Ramón Torrell JM, Põder A, Leroux-Roels I, Pérez-Breva L, Steenackers K, Vandermeulen C, Meisalu S, McNally D, Bowen JST, Heer A, Beltran Martinez A, Helman LL, Arora A, Feldman RG, Patel R, Shah A, Devadiga R, Damaso S, Matthews S, Pirçon JY, Luyts D. Respiratory syncytial virus disease burden in community-dwelling and long-term care facility older adults in Europe and the United States: A prospective study. Open Forum Infect Dis 2023; 10:ofad111. [PMID: 37065988 PMCID: PMC10099469 DOI: 10.1093/ofid/ofad111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
Lay Summary
Respiratory syncytial virus (RSV) causes respiratory illnesses, which can lead to serious complications in older adults. We estimated how common infections due to RSV are in adults living in the community or long-term care facilities. For 2 years, we followed approximately 2000 adults 50 years and older in Europe and the United States. Between October 2019 and March 2020, about 2 in 100 adults in this study had RSV infections; of these, fewer than one fifth had complications and there were no hospitalizations or deaths. Other viruses were present for less than one fifth of RSV infections. Between October 2020 and June 2021, during COVID-19 restrictions, we detected RSV infection in one adult, living in a long-term care facility, with no complications. RSV causes respiratory disease among adults 50 years and older and therefore programs to prevent RSV infection are needed in this age group.
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Affiliation(s)
| | | | - Airi Põder
- Clinical Research Center , Tartu 50106 , Estonia
| | | | - Lina Pérez-Breva
- Fundación para el Fomento de la Investigación Sanitaria y Biomédica , Valencia 46020 , Spain
| | - Katie Steenackers
- Centre for the Evaluation of Vaccination, University of Antwerp , Antwerp 2610 , Belgium
| | - Corinne Vandermeulen
- KU Leuven, Leuven University Vaccinology Center, Department of Public Health and Primary Care , Leuven 3000 , Belgium
| | | | | | - Jordan ST Bowen
- John Radcliffe Hospital, Oxford University Hospitals NHS Trust , Oxford OX3 9DU , United Kingdom
| | - Amardeep Heer
- Lakeside Surgery, Lakeside Healthcare , Corby NN17 2UR , United Kingdom
| | | | - Laura L Helman
- MOC Research , Mishawaka, Indiana IN 46544 , United States
| | - Amit Arora
- Haywood Community Hospital - Midlands Partnership NHS Foundation Trust , Stoke-on-Trent ST6 7AG , United Kingdom
| | - Robert G Feldman
- Senior Clinical Trials, Laguna Hills , California CA 92653 , United States
| | - Rajul Patel
- Royal South Hants Hospital, Clinical Research Office, Solent NHS Trust , Southampton SO14 0YG , United Kingdom
| | - Amit Shah
- Piedmont Research Partners. LLC, Fort Mill , South Carolina SC 29707 , United States
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3
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Janssens E, Flamaing J, Vandermeulen C, Peetermans WE, Desmet S, De Munter P. The 20-valent pneumococcal conjugate vaccine (PCV20): expected added value. Acta Clin Belg 2023; 78:78-86. [PMID: 35171752 DOI: 10.1080/17843286.2022.2039865] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Currently existing pneumococcal vaccines have contributed to a major reduction in pneumococcal disease. However, there remains an unmet need for vaccine coverage of serotypes not included in PCV13 to further reduce the burden of disease. The objective of this review is to assess the potential impact of implementation of the investigational 20-valent pneumococcal conjugate vaccine (PCV20) in the childhood and adult immunization programme in Belgium and Europe. METHODS A literature search was conducted to identify publications and surveillance reports concerning the effectiveness and safety of pneumococcal vaccines, epidemiological data on pneumococcal disease or serotype distribution dynamics after introduction of systematic vaccination. RESULTS Serotypes included in PCV20 currently account for the majority of pneumococcal disease in Belgium and Europe. In Belgium, PCV20-serotypes accounted for 71.4% of invasive pneumococcal disease (IPD) cases across all age groups in 2019, of which 39.2% were caused by PCV20-non-PCV13-serotypes. In Europe, these seven serotypes accounted for 37,6% of IPD cases in 2018. PCV20 has proven to be well tolerated in vaccine-naïve adults and elicits a substantial immune response against all serotypes included. CONCLUSION Due to serotype replacement following the introduction of PCV7 and PCV13, a considerable proportion of pneumococcal disease is currently caused by PCV20-serotypes. PCV20 has the potential of preventing more pneumococcal disease in children and the adult population at risk than the existing conjugate vaccines. The available evidence on safety and immunogenicity of PCV20 is promising, but further research is needed to provide data about vaccine effectiveness, immune response duration and replacement phenomenon after introduction of PCV20.
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Affiliation(s)
- Esther Janssens
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Johan Flamaing
- Department of Geriatric Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Public Health & Primary Care, KU Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- Department of Public Health & Primary Care, KU Leuven, Leuven, Belgium.,Leuven University Vaccinology Centre, Leuven, Belgium
| | - Willy E Peetermans
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Stefanie Desmet
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.,National Reference Centre for Streptococcus Pneumoniae, University Hospitals Leuven, Leuven, Belgium
| | - Paul De Munter
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
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4
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De Sutter E, Verreydt S, Yskout K, Geerts D, Borry P, Outtier A, Ferrante M, Vandermeulen C, Vanmechelen N, Van der Schueren B, Huys I. Using provocative design to foster electronic informed consent innovation. BMC Med Inform Decis Mak 2022; 22:296. [PMCID: PMC9669523 DOI: 10.1186/s12911-022-02039-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 11/03/2022] [Indexed: 11/18/2022] Open
Abstract
Background The development of technological applications in clinical research, such as electronic informed consent (eIC), is on the rise. The involvement of end users throughout the design process of eIC is of utmost importance to improve the current informed consent process. Methods Using a provocative design, we conducted interviews with 30 clinical research participants. Provotypes were used as a starting base to discuss various aspects relevant to eIC. By providing a medium to encourage divergent thinking, participants’ views and concerns were solicited. Thematic analysis was undertaken using NVivo. Results The majority of participants placed trust in the principal investigator or the hospital to perform the role of eIC hosting party. Differing opinions were reported on the amount of information required related to stakeholders’ access to an eIC system, and thus, to participants’ personal data, to enable trust in an eIC system. Nevertheless, this study indicates a general willingness of participants to share personal data with physicians and pharmaceutical companies on an international level, and to receive requests for new research studies via an eIC system. Participants suggested to tailor an eIC system based upon their preferences, for example, regarding whom they want to share their personal data with. Moreover, they expressed a desire to choose how they can contact the research team, and to indicate which study-related information they would like to receive electronically. In addition, positive opinions were voiced on the integration of a test to assess participants’ understanding before providing their eIC. Conclusions Following a research through design approach, insights have been generated which inform the design of eIC. Provotypes were designed to help participants think beyond what is familiar to them. Study findings revealed that not all situations were perceived as provocative, because of participants’ motivation to advance scientific research and the trust they place in the research team. Nevertheless, the use of provocative design resulted in additional insights, generated by clinical research participants, which could be considered in the further design of eIC. Supplementary Information The online version contains supplementary material available at 10.1186/s12911-022-02039-6.
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Affiliation(s)
- Evelien De Sutter
- grid.5596.f0000 0001 0668 7884Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Stef Verreydt
- grid.5596.f0000 0001 0668 7884Distributed and Secure Software (DistriNet), Department of Computer Science, KU Leuven, Leuven, Belgium
| | - Koen Yskout
- grid.5596.f0000 0001 0668 7884Distributed and Secure Software (DistriNet), Department of Computer Science, KU Leuven, Leuven, Belgium
| | - David Geerts
- grid.5596.f0000 0001 0668 7884KU Leuven Digital Society Institute, KU Leuven, Leuven, Belgium
| | - Pascal Borry
- grid.5596.f0000 0001 0668 7884Centre for Biomedical Ethics and Law, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - An Outtier
- grid.5596.f0000 0001 0668 7884Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Marc Ferrante
- grid.5596.f0000 0001 0668 7884Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- grid.5596.f0000 0001 0668 7884Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nele Vanmechelen
- grid.5596.f0000 0001 0668 7884Department of Endocrinology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Bart Van der Schueren
- grid.5596.f0000 0001 0668 7884Department of Endocrinology, University Hospitals Leuven, KU Leuven, Leuven, Belgium ,grid.5596.f0000 0001 0668 7884Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Isabelle Huys
- grid.5596.f0000 0001 0668 7884Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
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5
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Leroux-Roels I, Davis MG, Steenackers K, Essink B, Vandermeulen C, Fogarty C, Andrews CP, Kerwin E, David MP, Fissette L, Abeele CV, Collete D, de Heusch M, Salaun B, De Schrevel N, Koch J, Verheust C, Dezutter N, Struyf F, Mesaros N, Tica J, Hulstrøm V. Safety and immunogenicity of a respiratory syncytial virus prefusion F (RSVPreF3) candidate vaccine in older adults: phase I/II randomized clinical trial. J Infect Dis 2022; 227:761-772. [PMID: 35904987 PMCID: PMC10044090 DOI: 10.1093/infdis/jiac327] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/21/2022] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The aim was to investigate safety and immunogenicity of vaccine formulations against respiratory syncytial virus (RSV) containing the stabilized prefusion conformation of RSV fusion protein (RSVPreF3). METHODS This phase I/II, randomized, controlled, observer-blind study enrolled 48 young adults (YA; 18-40 years) and 1005 older adults (OA; 60-80 years) between January and August 2019. Participants were randomized into equally sized groups to receive two doses of unadjuvanted (YA and OA) or AS01-adjuvanted (OA) vaccine or placebo two months apart. Vaccine safety and immunogenicity were assessed until one (YA) or 12 months (OA) after second vaccination. RESULTS The RSVPreF3 vaccines boosted humoral (RSVPreF3-specific IgG and RSV-A neutralizing antibody) responses, which increased in an antigen-concentration-dependent manner and were highest post-dose one. Compared to pre-vaccination, the geometric mean frequencies of polyfunctional CD4+ T-cells increased after each dose and were significantly higher in adjuvanted than unadjuvanted vaccinees. Post-vaccination immune responses persisted until end of follow-up. Solicited adverse events (AEs) were mostly mild-to-moderate and transient. Despite a higher observed reactogenicity of AS01-containing vaccines, no safety concerns were identified for any assessed formulation. CONCLUSIONS Based on safety and immunogenicity profiles, the AS01E-adjuvanted vaccine containing 120 μg of RSVPreF3 was selected for further clinical development. TRIAL REGISTRATION ClinicalTrials.gov NCT03814590; URL: https://clinicaltrials.gov/ct2/show/NCT03814590.
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Affiliation(s)
- Isabel Leroux-Roels
- Center for Vaccinology (CEVAC), Ghent University Hospital, 9000 Ghent, Belgium
| | - Matthew G Davis
- Rochester Clinical Research, Rochester, NY 14609, United States
| | - Katie Steenackers
- Vaccine and Infectious Disease Institute, University of Antwerp, 2610 Wilrijk, Belgium
| | - Brandon Essink
- Meridian Clinical Research Omaha, Omaha, NE 68134, United States
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center, Department of Public Health & Primary Care, KU Leuven, 3000 Leuven, Belgium
| | - Charles Fogarty
- Lung and Chest Medical Associates, Spartanburg Medical Research, Spartanburg, SC 29303, United States
| | | | - Edward Kerwin
- Crisor, LLC c/o Clinical Research Institute of Southern Oregon, Medford, OR 97504, United States
| | | | | | | | | | | | | | | | - Juliane Koch
- UCB Pharma GmbH, Alfred-Nobel-Strasse 10, 40789 Monheim am Rhein, Germany
| | | | | | - Frank Struyf
- Janssen Research & Development, Turnhoutseweg 30, B-2340 Beerse, Belgium
| | - Narcisa Mesaros
- Janssen Research & Development, Turnhoutseweg 30, B-2340 Beerse, Belgium
| | - Jelena Tica
- Janssen-Cilag GmbH, Johnson & Johnson Platz 1, 41470 Neuss, Germany
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Luyten J, Beutels P, Vandermeulen C, Kessels R. Social preferences for adopting new vaccines in the national immunization program: A discrete choice experiment. Soc Sci Med 2022; 303:114991. [PMID: 35594739 DOI: 10.1016/j.socscimed.2022.114991] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 04/17/2022] [Accepted: 04/22/2022] [Indexed: 10/18/2022]
Abstract
Governments regularly have to decide whether new vaccines should be adopted in their national immunization program. These choices imply complex trade-offs of epidemiological, medical and socio-economic criteria. We investigated how the population in Flanders (Belgium) wants their government to set vaccine-funding priorities. In December 2019, we executed a discrete choice experiment in a sample of the Flemish population (N = 1636). In total, we analysed 16 360 choices between vaccines competing for funding, described in terms of eight characteristics. Using a panel mixed logit model, we quantified the relative importance of each characteristic and investigated differences in preferences across respondent groups. The observed vaccine priorities were different from those that would be identified through cost-effectiveness analysis. People valued the health impact from infectious diseases differently than their weight expressed in QALYs would suggest. Mortality and frequently occurring mild illness were valued higher, whereas lasting morbidity received lower weight. Contribution of the vaccine to disease eradication and uncertainty in vaccine effectiveness were both highly influential factors. Health equity impact was also important whereas the economic impact of the disease did not matter at all. Our results can be used to incorporate public values into vaccine decision-making.
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Affiliation(s)
- Jeroen Luyten
- KU Leuven, Leuven Institute for Healthcare Policy, Department of Public Health and Primary Care, Kapucijnenvoer 35, 3000, Leuven, Belgium.
| | - Philippe Beutels
- University of Antwerp, Centre for Health Economics Research & Modelling Infectious Diseases, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Corinne Vandermeulen
- KU Leuven, Environment and Health, Department of Public Health and Primary Care, Kapucijnenvoer 35, 3000, Leuven, Belgium
| | - Roselinde Kessels
- Maastricht University, Department of Data Analytics and Digitalization, PO Box 616, 6200 MD, Maastricht, The Netherlands; University of Antwerp, Department of Economics, City Campus, Prinsstraat 13, 2000, Antwerp, Belgium
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7
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Boone A, Roelants M, Hoppenbrouwers K, Vandermeulen C, Du Bois M, Godderis L. Perceived team roles of medical students: a five year cross-sectional study. BMC Med Educ 2022; 22:198. [PMID: 35317804 PMCID: PMC8941808 DOI: 10.1186/s12909-022-03263-4] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Despite the increasing importance of teamwork in healthcare, medical education still puts great emphasis on individual achievements. The purpose of this study is to examine medical students' team role preferences, including the association with gender and specialty; and to provide implications for policy makers and medical educators. METHODS We used an exploratory methodology, following a cross-sectional design. Data was collected from first year master students in medicine (n = 2293) during five consecutive years (2016-2020). The Belbin Team Role Self Perception Inventory (BTRSPI) was used to measure medical students' self-perceptions of their team role. RESULTS The Team Worker was the most preferred team role among medical students (35.8%), regardless of gender or specialty. Female and male students had similar team role patterns, although female students scored higher on Team Worker (40.4% vs. 29.1%, P < .001) and Completer-Finisher (14.0% vs. 8.0%, P < .001). With regard to specialties, the Team Worker role was more often chosen by general practitioners than by person-centered and technique-oriented specialties (47.1% vs. 41.8% vs. 29.1%, P < .001). CONCLUSIONS Our findings contribute to an increased scientific understanding of how medical students perceive their own team role, and how this is related to gender and specialty. This is valuable due to the increased importance of interdisciplinary teamwork in healthcare. Medical schools should prioritize stimulating teamwork skills through the implementation of different interventions at all stages (i.e. from the admission process to curricula to residency) and all levels (i.e. explicit and implicit curricula).
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Affiliation(s)
- Anke Boone
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium.
| | - Mathieu Roelants
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium
| | - Karel Hoppenbrouwers
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium
| | - Corinne Vandermeulen
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium
| | - Marc Du Bois
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium
| | - Lode Godderis
- Centre for Environment and Health, Department of Public Health and Primary Care, University of Leuven (KU Leuven), Leuven, Belgium
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8
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Boey L, Roelants M, Merckx J, Hens N, Desombere I, Duysburgh E, Vandermeulen C. Age-dependent seroprevalence of SARS-CoV-2 antibodies in school-aged children from areas with low and high community transmission. Eur J Pediatr 2022; 181:571-578. [PMID: 34455523 PMCID: PMC8402965 DOI: 10.1007/s00431-021-04222-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/01/2021] [Accepted: 07/26/2021] [Indexed: 12/20/2022]
Abstract
It is not yet clear to what extent SARS-CoV-2 infection rates in children reflect community transmission, nor whether infection rates differ between primary schoolchildren and young teenagers. A cross-sectional serosurvey compared the SARS-CoV2 attack-rate in a sample of 362 children recruited from September 21 to October 6, 2020, in primary (ages 6-12) or lower secondary school (ages 12-15) in a municipality with low community transmission (Pelt) to a municipality with high community transmission (Alken) in Belgium. Children were equally distributed over grades and regions. Blood samples were tested for the presence of antibodies to SARS-CoV-2 with an enzyme-linked immunosorbent assay. We found anti-SARS-CoV-2 antibodies in 4.4% of children in the low transmission region and in 14.4% of children in the high transmission region. None of the primary schoolchildren were seropositive in the low transmission region, whereas the seroprevalence among primary and secondary schoolchildren did not differ significantly in the high transmission region. None of the seropositive children suffered from severe disease. Children who were in contact with a confirmed case (RR 2.9; 95%CI 1.6-4.5), who participated in extracurricular activities (RR 5.6; 95%CI 1.2-25.3), or whose caregiver is a healthcare worker who had contact with COVID-19 patients (RR 2.2; 95%CI 1.0-4.6) were at higher risk of seropositivity. If SARS-CoV2 circulation in the community is high, this will be reflected in the pediatric population with similar infection rates in children aged 6-12 years and 12-15 years. What is Known: •Children are generally less affected by COVID-19 than adults but SARS-CoV2 infection rates among children are not well known. •There were large regional differences in infection rates during the first wave of the SARS-CoV2 pandemic. What is New: •None of the primary schoolchildren (6-12 years) were seropositive for SARS-CoV2 in an area with a low community transmission, but infection rates were higher in adolescents (12-15 years). •In an area with high community transmission, seroprevalence rates in younger children were more comparable to those in adolescents.
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Affiliation(s)
- Lise Boey
- Environment and Health, Department of Public Health and Primary Care, Leuven University Vaccinology Center, KU Leuven, Leuven, Belgium.
| | - Mathieu Roelants
- Environment and Health, Department of Public Health and Primary Care, Leuven University Vaccinology Center, KU Leuven, Leuven, Belgium
| | - Joanna Merckx
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC Canada
| | - Niel Hens
- Data Science Institute, I-BioStat, Hasselt University, Hasselt, Belgium ,Modelling Infectious Diseases, Vaccine and Infectious Disease Institute, Centre for Health Economic Research, University of Antwerp, Antwerp, Belgium
| | - Isabelle Desombere
- Infectious Diseases in Humans, Sciensano (Public Health Belgium), Brussels, Belgium
| | - Els Duysburgh
- Epidemiology and Public Health, Sciensano (Public Health Belgium), Brussels, Belgium
| | - Corinne Vandermeulen
- Environment and Health, Department of Public Health and Primary Care, Leuven University Vaccinology Center, KU Leuven, Leuven, Belgium
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9
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Heyerdahl LW, Dielen S, Nguyen T, Van Riet C, Kattumana T, Simas C, Vandaele N, Vandamme AM, Vandermeulen C, Giles-Vernick T, Larson H, Grietens KP, Gryseels C. Doubt at the core: Unspoken vaccine hesitancy among healthcare workers. Lancet Reg Health Eur 2021; 12:100289. [PMID: 34927116 PMCID: PMC8668386 DOI: 10.1016/j.lanepe.2021.100289] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Affiliation(s)
- Leonardo W Heyerdahl
- Department of Global Health, Anthropology and Ecology of Disease Emergence Unit, Institut Pasteur, Paris, France
| | - Stef Dielen
- Socio-Ecological Health Research Unit, Institute of Tropical Medicine, Antwerp, Belgium
| | - ToTran Nguyen
- Socio-Ecological Health Research Unit, Institute of Tropical Medicine, Antwerp, Belgium
| | | | - Tarun Kattumana
- Access-To-Medicines Research Centre, KU Leuven, Belgium.,Husserl Archives, Research Center for Phenomenology and Continental Philosophy, Institute of Philosophy, KU Leuven, Belgium
| | - Clarissa Simas
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | - Nico Vandaele
- Access-To-Medicines Research Centre, KU Leuven, Belgium
| | - Anne-Mieke Vandamme
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Institute for the Future, Leuven, Belgium.,Center for Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Corinne Vandermeulen
- Youth Health Care, Environment and Health Leuven University Vaccinology Centre KU Leuven, Belgium
| | - Tamara Giles-Vernick
- Department of Global Health, Anthropology and Ecology of Disease Emergence Unit, Institut Pasteur, Paris, France
| | - Heidi Larson
- Vaccine Confidence Project and London School of Hygiene and Tropical Medicine, United Kingdom
| | - Koen Peeters Grietens
- Socio-Ecological Health Research Unit, Institute of Tropical Medicine, Antwerp, Belgium.,School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Charlotte Gryseels
- Socio-Ecological Health Research Unit, Institute of Tropical Medicine, Antwerp, Belgium
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10
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Díez-Domingo J, Vandermeulen C, Akhund T, Costantini M, Singh PV, Basile V, Fragapane E, Lattanzi M, Pellegrini M. 632. Clinical Experience with a New Fully Liquid Presentation of the MenACWY-CRM Vaccine. Results from Two Multicenter, Randomized, Controlled, Observer-Blind, Phase 2b Studies. Open Forum Infect Dis 2021. [DOI: 10.1093/ofid/ofab466.830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Currently, licensed MenACWY-CRM conjugate vaccine presentation (Lyo/Liq) consists of two vials (lyophilized MenA, liquid MenCWY) to be reconstituted before injection. A new, fully liquid, single vial formulation has been developed and evaluated in two clinical studies in adolescents and adults aimed at demonstrating immunological non-inferiority of the liquid presentation for MenA.
Methods
Overall, 1337 subjects, 10 to 40 years of age (y), were exposed to a single 0.5 mL intramuscular dose of MenACWY Liquid and 1332 to MenACWY-CRM(Lyo/Liq). MenACWY-CRM Liquid was aged before administration, to test the vaccine immunogenicity at the end of the intended shelf-life and establish release and end of shelf life specifications. MenACWY-CRM(Lyo/Liq) was used as comparator and was not aged. In study 1 (NCT03652610), the Liquid vaccine underwent an ageing process under controlled conditions to reach ~30% MenA free saccharide (FS). In study 2 (NCT03433482), the Liquid vaccine was naturally aged at 2–8°C for approximately 24 and 30 months. Primary immunogenicity objective in both studies was non-inferiority of MenACWY-CRM liquid to licensed vaccine, as measured by human serum bactericidal assay (hSBA) geometric mean titers (GMTs) against MenA, 1-month post-vaccination.
Results
In both studies, for each between-group ratio of MenA hSBA GMTs, lower limits of the 95% confidence intervals (CIs) were greater than the prespecified non-inferiority margin (0.5), thus meeting the non-inferiority immunogenicity objective. Irrespectively of the vaccine presentation tested, over 82% of participants achieved MenA hSBA titers ≥ 8 in study 1 and at least 92% in study 2. The immunogenicity of MenACWY-CRM Liquid was similar to that of MenACWY-CRM(Lyo/Liq) when analyzed by serogroup, overall. No related serious adverse events were reported for both presentations.
Conclusion
After ageing, the new MenACWY-CRM Liquid demonstrated the ability to elicit non-inferior bactericidal responses against MenA compared to licensed formulation. The new full-liquid presentation is expected to increase the user-friendliness of the vaccine as well as to reduce reconstitution errors in the future, with a similar safety profile to that of the licensed vaccine presentation.
Disclosures
Javier Díez-Domingo, MD, PhD, GSK (Grant/Research Support)Sanofi (Grant/Research Support) Corinne Vandermeulen, MD PhD, GSK (Grant/Research Support)MSD (Grant/Research Support)Pfizer (Grant/Research Support) Tauseefullah Akhund, MD, MSc, MPH, GSK (Employee, Shareholder) Marco Costantini, MSc, MBA, EMPHA, GSK (Employee) Puneet Vir Singh, MBBS, PGDCD, GSK (Employee, Shareholder) Venere Basile, MSc, GSK (Employee, Shareholder) Elena Fragapane, MD, GSK (Employee, Shareholder) Maria Lattanzi, MD, PhD, GSK (Employee, Shareholder) Michele Pellegrini, MD, PhD, Michele Pellegrini (Employee, Shareholder)
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11
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De Smedt P, Leroux-Roels G, Vandermeulen C, Tasciotti A, Di Maro G, Dozot M, Casula D, Annaratone M, Riccucci D, Arora AK. Long-term immunogenicity and safety of a non-typeable Haemophilus influenzae- Moraxella catarrhalis vaccine: 4-year follow-up of a phase 1 multicentre trial. Vaccine X 2021; 9:100124. [PMID: 34820619 PMCID: PMC8600057 DOI: 10.1016/j.jvacx.2021.100124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/09/2021] [Accepted: 10/29/2021] [Indexed: 11/24/2022] Open
Abstract
Older adults with smoking history received two doses of combined NTHi-Mcat vaccine. We evaluated antibody persistence during 4 years of follow-up after vaccination. Immune responses against the NTHi protein antigens persisted up to 4 years. There was no persistent immune response against the Mcat antigen. No safety concerns were identified during the long-term follow-up period.
A multicomponent vaccine has been developed to reduce the frequency of acute exacerbations of COPD associated with non-typeable Haemophilus influenzae (NTHi) and Moraxella catarrhalis (Mcat) infections, containing NTHi (PD and PE-PilA) and Mcat (UspA2) surface proteins. In a randomised, observer-blind, placebo-controlled study with two steps (NCT02547974), the investigational vaccine had good immunogenicity and no safety concerns were identified. In step 2, 90 adults aged 50–71 years with smoking history received two doses 60 days apart of one of two AS01E-adjuvanted formulations containing 10 µg of each antigen (10–10-AS01) or 10 µg NTHi antigens and 3.3 µg UspA2 (10–3-AS01), or placebo. Long-term persistence of antigen-specific humoral antibodies was assessed in 81 participants during 3 years of follow-up after the initial 14-month study (NCT03201211). Antigen-specific antibody concentrations were measured in blood samples taken every 6 months. Safety monitoring evaluated serious adverse events (SAEs) and potential immune-mediated disease (pIMD). Immune responses against NTHi antigens persisted up to 4 years post-vaccination. For PD, PE and PilA, at each follow-up time point, adjusted antibody geometric mean concentrations (GMCs) were higher (non-overlapping 95% confidence intervals [CIs]) in the vaccine groups versus placebo and versus pre-vaccination. Antibody GMC point estimates were higher with 10–3-AS01 than with 10–10-AS01. For UspA2, 95% CIs included 1 for GMC ratios of 10–10-AS01 or 10–3-AS01 to placebo at each time point. During follow-up, SAEs were reported in nine (11.1%) participants, one of which was fatal (lung cancer, 607 days after second 10–10-AS01 dose). One non-serious pIMD, trigeminal neuralgia, was reported 771 days after second 10–3-AS01 dose. The SAEs and pIMD were considered not related to vaccination. Immune responses against NTHi antigens persisted for 4 years after two-dose vaccination with the investigational NTHi-Mcat vaccine. There was no persistent response against the Mcat antigen. No safety concerns were identified during the long-term follow-up.
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Key Words
- AECOPD, acute exacerbations of chronic obstructive pulmonary disease
- ANCOVA, analysis of covariance
- AS01E, Adjuvant System AS01E, containing 3-O-desacyl-4′-monophosphoryl lipid A, QS-21 (Quillaja saponaria Molina, fraction 21) and liposome
- Acute exacerbation
- Antibody persistence
- CI, confidence interval
- COPD
- COPD, chronic obstructive pulmonary disease
- Clinical trial
- ELISA, enzyme-linked immunosorbent assay
- EU, enzyme-linked immunosorbent assay units
- GMC, geometric mean concentration
- GMR, geometric mean ratio
- Haemophilus influenzae
- LLOQ, lower limit of quantification
- MPL, 3-O-desacyl-4′-monophosphoryl lipid A
- Mcat, Moraxella catarrhalis
- Moraxella catarrhalis
- NTHi, non-typeable Haemophilus influenzae
- PD, protein D
- PE, protein E
- PilA, Pilin A
- QS-21, Quillaja saponaria Molina, fraction 21
- SAE, serious adverse event
- UspA2, ubiquitous surface protein A2
- pIMD, potential immune-mediated disease
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Affiliation(s)
- Philippe De Smedt
- Centre for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Geert Leroux-Roels
- Centre for Vaccinology, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
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12
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Decouttere C, Banzimana S, Davidsen P, Van Riet C, Vandermeulen C, Mason E, Jalali MS, Vandaele N. Insights into vaccine hesitancy from systems thinking, Rwanda. Bull World Health Organ 2021; 99:783-794D. [PMID: 34737471 PMCID: PMC8542260 DOI: 10.2471/blt.20.285258] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE To investigate vaccine hesitancy leading to underimmunization and a measles outbreak in Rwanda and to develop a conceptual, community-level model of behavioural factors. METHODS Local immunization systems in two Rwandan communities (one recently experienced a measles outbreak) were explored using systems thinking, human-centred design and behavioural frameworks. Data were collected between 2018 and 2020 from: discussions with 11 vaccination service providers (i.e. hospital and health centre staff); interviews with 161 children's caregivers at health centres; and nine validation interviews with health centre staff. Factors influencing vaccine hesitancy were categorized using the 3Cs framework: confidence, complacency and convenience. A conceptual model of vaccine hesitancy mechanisms with feedback loops was developed. FINDINGS A comparison of service providers' and caregivers' perspectives in both rural and peri-urban settings showed that similar factors strengthened vaccine uptake: (i) high trust in vaccines and service providers based on personal relationships with health centre staff; (ii) the connecting role of community health workers; and (iii) a strong sense of community. Factors identified as increasing vaccine hesitancy (e.g. service accessibility and inadequate follow-up) differed between service providers and caregivers and between settings. The conceptual model could be used to explain drivers of the recent measles outbreak and to guide interventions designed to increase vaccine uptake. CONCLUSION The application of behavioural frameworks and systems thinking revealed vaccine hesitancy mechanisms in Rwandan communities that demonstrate the interrelationship between immunization services and caregivers' vaccination behaviour. Confidence-building social structures and context-dependent challenges that affect vaccine uptake were also identified.
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Affiliation(s)
| | - Stany Banzimana
- East African Community Regional Centre of Excellence for Vaccines, Immunization and Health Supply Chain Management, University of Rwanda, Kigali, Rwanda
| | - Pål Davidsen
- System Dynamics Group, University of Bergen, Bergen, Norway
| | - Carla Van Riet
- Research Center for Access-to-Medicines, Naamsestraat 69, 3000 Leuven, Belgium
| | | | - Elizabeth Mason
- Massachusetts General Hospital Institute for Technology Assessment, Harvard Medical School, Cambridge, United States of America
| | - Mohammad S Jalali
- Massachusetts General Hospital Institute for Technology Assessment, Harvard Medical School, Cambridge, United States of America
| | - Nico Vandaele
- Research Center for Access-to-Medicines, Naamsestraat 69, 3000 Leuven, Belgium
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13
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Vandermeulen C, Leroux-Roels I, Vandeleur J, Staniscia T, Girard G, Ferguson M, Icardi G, Schwarz TF, Neville AM, Nolan T, Cinquetti S, Akhund T, Van Huyneghem S, Aggravi M, Kunnel B, de Wergifosse B, Domenico GFD, Costantini M, Vir Singh P, Fragapane E, Lattanzi M, Pellegrini M. A new fully liquid presentation of MenACWY-CRM conjugate vaccine: Results from a multicentre, randomised, controlled, observer-blind study. Vaccine 2021; 39:6628-6636. [PMID: 34635373 DOI: 10.1016/j.vaccine.2021.09.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/17/2021] [Accepted: 09/28/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The currently licensed quadrivalent MenACWY-CRM conjugate vaccine presentation consists of two vials (lyophilised MenA and liquid MenCWY) to be reconstituted before injection. A new fully liquid formulation in a single vial has been developed to further improve the vaccine presentation. Since the MenA structure is subject to hydrolytic degradation, this study was conducted to compare the immunogenicity and safety of the investigational MenACWY-CRM liquid vaccine with the licensed vaccine. METHODS In this multicentre, randomised, controlled, observer-blind, phase 2b study, 979 healthy adults were administered a single dose of MenACWY-CRM liquid presentation or the currently licensed MenACWY-CRM vaccine. MenA free saccharide generation was accelerated to approximately 30% in the liquid presentation and MenA polysaccharide O-acetylation was reduced to approximately 40%, according to a controlled procedure. Immunological non-inferiority of the MenACWY-CRM liquid to the licensed vaccine, as measured by human serum bactericidal assay (hSBA) geometric mean titres (GMTs) against MenA 1 month post-vaccination, was the primary study objective. Safety assessment was among the secondary objectives. RESULTS Immune responses against each serogroup were similar between the two vaccine groups and was non-inferior for MenA. Adjusted hSBA GMTs for MenA were 185.16 and 211.33 for the MenACWY-CRM liquid presentation and currently licensed vaccine presentation, respectively. The between-group ratio of hSBA GMTs for MenA was 0.88, with a two-sided 95% confidence interval lower limit of 0.64, greater than the prespecified non-inferiority margin of 0.5, thus meeting the primary study objective. Both vaccines were well tolerated. No serious adverse events were considered related to vaccination. CONCLUSIONS The levels of MenA free saccharide and polysaccharide O-acetylation did not affect the immunogenicity of the fully liquid presentation, which was demonstrated to be non-inferior to the immunogenicity of the currently licensed MenACWY-CRM vaccine against MenA. The immunogenicity, reactogenicity and safety profiles of the two vaccine presentations were similar.
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Affiliation(s)
- Corinne Vandermeulen
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Kapucijnenvoer 35, PO 7001, 3000 Leuven, Belgium.
| | - Isabel Leroux-Roels
- Center for Vaccinology, Ghent University and Ghent University Hospital, Ghent, Belgium.
| | - James Vandeleur
- Paratus Clinical Blacktown Clinic, Main Street, Blacktown, NSW 2148, Australia
| | - Tommaso Staniscia
- Department of Medicine and Aging Sciences, 'G. d'Annunzio' University Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy.
| | - Ginette Girard
- Diex Research, 15 J.-A. Bombardier, Sherbrooke, Québec J1L 0H8, Canada.
| | - Murdo Ferguson
- Colchester Research Group, 68 Robie Street, Truro, Nova Scotia, Canada.
| | - Giancarlo Icardi
- Department of Health Sciences (Dissal), University of Genoa, and Hygiene Unit, IRCCS Policlinico San Martino Hospital, Genoa, Italy.
| | - Tino F Schwarz
- Klinikum Würzburg Mitte, Standort Juliusspital, Salvatorstr. 7, 97074 Würzburg, Germany.
| | - A Munro Neville
- AusTrials, Level 3, Westside Private Hospital, 32 Morrow St, Taringa, QLD 4068, Australia.
| | - Terry Nolan
- Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria 3010, Australia; Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.
| | - Sandro Cinquetti
- Public Health Department, Local Health Unit N. 2 'Marca Trevigiana', Treviso, Veneto Region, Italy.
| | - Tauseefullah Akhund
- GSK, Clinical Research and Development Centre, Via Fiorentina 1, Siena 53100, Italy.
| | - Sofie Van Huyneghem
- GSK, Regional Evidence Generation, Avenue Pascal 2, 4, 6, 1300 Wavre, Belgium.
| | - Marianna Aggravi
- GSK, Technical Development, Via Fiorentina 1, Siena 53100, Italy.
| | - Barry Kunnel
- GSK, Data Strategy & Management, Global Clinical Operations Development - R&D, Hullenbergweg 83-85, 1101CL Amsterdam, the Netherlands.
| | | | | | - Marco Costantini
- GSK, Biostatistics and Statistical Programming, Via Fiorentina 1, Siena 53100, Italy.
| | - Puneet Vir Singh
- GSK, Safety Evaluation and Risk Management, Via Fiorentina 1, Siena 53100, Italy.
| | - Elena Fragapane
- GSK, Clinical Research and Development Centre, Via Fiorentina 1, Siena 53100, Italy.
| | - Maria Lattanzi
- GSK, Clinical Research and Development Centre, Via Fiorentina 1, Siena 53100, Italy.
| | - Michele Pellegrini
- GSK, Clinical Research and Development Centre, Via Fiorentina 1, Siena 53100, Italy.
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14
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Boey L, Curinckx A, Roelants M, Derdelinckx I, Van Wijngaerden E, De Munter P, Vos R, Kuypers D, Van Cleemput J, Vandermeulen C. Immunogenicity and Safety of the 9-Valent Human Papillomavirus Vaccine in Solid Organ Transplant Recipients and Adults Infected With Human Immunodeficiency Virus (HIV). Clin Infect Dis 2021; 73:e661-e671. [PMID: 33373429 DOI: 10.1093/cid/ciaa1897] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The burden of human papillomavirus (HPV) in human immunodeficiency virus (HIV)-infected persons and solid organ transplant (SOT) recipients is high. Clinical trials on HPV vaccines in persons living with HIV and particularly in SOT recipients have been sparse to date, included low numbers of participants, and none of them assessed the 9-valent HPV (9vHPV) vaccine. We investigated the immunogenicity with respect to HPV types 6, 11, 16, 18, 31, 33, 45, 52, and 58 and the safety of the 9vHPV vaccine in persons living with HIV and recipients of a kidney, lung, or heart transplant. METHODS This is a phase III investigator-initiated study in 100 persons living with HIV (age 18-45 years) and 171 SOT recipients (age 18-55 years). The 9vHPV vaccine was administered at day 1, month 2, and month 6. Primary outcome was seroconversion rates to the 9vHPV types at month 7. Secondary outcomes were geometric mean titers (GMTs) and frequency of adverse events (AEs). RESULTS All HIV-infected participants seroconverted for all HPV types, but seroconversion ranged from 46% for HPV45 to 72% for HPV58 in SOT recipients. GMTs ranged from 180 to 2985 mMU/mL in HIV-positive participants and from 17 to 170 mMU/mL in SOT recipients, depending on the HPV type. Injection-site AEs occurred in 62% of participants but were mostly mild or moderate in intensity. None of the reported serious adverse events were deemed vaccine related. No patients died during the study. CONCLUSIONS Immunogenicity of the 9vHPV vaccine is high in persons living with HIV but suboptimal in SOT recipients. The vaccine is safe and well tolerated in both groups.
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Affiliation(s)
- Lise Boey
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Ans Curinckx
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Mathieu Roelants
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Inge Derdelinckx
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Eric Van Wijngaerden
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Paul De Munter
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Robin Vos
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium, and Department CHROMETA (Chronic Diseases, Metabolism and Aging), BREATHE (Laboratory of Respiratory Diseases and Thoracic Surgery), KU Leuven, Leuven, Belgium
| | - Dirk Kuypers
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | | | - Corinne Vandermeulen
- Leuven University Vaccinology Centre, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
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15
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Moons P, Fieuws S, Vandermeulen C, Ombelet F, Willems R, Goossens E, Van Bulck L, de Hosson M, Annemans L, Budts W, De Backer J, Moniotte S, Marelli A, De Groote K. Influenza Vaccination in Patients With Congenital Heart Disease in the Pre-COVID-19 Era: Coverage Rate, Patient Characteristics, and Outcomes. Can J Cardiol 2021; 37:1472-1479. [PMID: 33961983 DOI: 10.1016/j.cjca.2021.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/06/2021] [Accepted: 04/19/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Influenza vaccination is the most commonly recommended immune prevention strategy. However, data on influenza vaccination in patients with congenital heart disease (CHD) are scarce. In this study, our goals were to: (1) measure vaccination coverage rates (VCRs) for influenza in a large cohort of children, adolescents, and adults with CHD; (2) identity patient characteristics as predictors for vaccination; and (3) investigate the effect of influenza vaccination on hospitalization. METHODS A nationwide cohort study in Belgium included 16,778 patients, representing 134,782 vaccination years, from the Belgian Congenital Heart Disease Database Combining Administrative and Clinical Data (BELCODAC). Data over 9 vaccination years (2006-2015) were used, and patients were stratified into 5 age cohorts: 6 months to 4 years; 5-17 years; 18-49 years; 50-64 years; and 65 years and older. RESULTS In the respective age cohorts, the VCR was estimated to be 6.6%, 8.0%, 23.9%, 46.6%, and 72.8%. There was a steep increase in VCRs as of the age of 40 years. Multivariable logistic regression showed that higher anatomical complexity of CHD, older age, presence of genetic syndromes, and previous cardiac interventions were associated with significantly higher VCRs. Among adults, men had lower and pregnant women had higher VCRs. The association between influenza vaccination and all-cause hospitalization was not significant in this study. CONCLUSIONS The influenza VCR in people with CHD is low, especially in children and adolescents. Older patients, particularly those with complex CHD, are well covered. Our findings should inform vaccination promotion strategies in populations with CHD.
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Affiliation(s)
- Philip Moons
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium; Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden; Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa.
| | - Steffen Fieuws
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Fouke Ombelet
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium; VIB - Center of Brain and Disease Research, Laboratory of Neurobiology, Leuven, Belgium; Department of Neurology, University Hospitals Leuven, Leuven, Belgium
| | - Ruben Willems
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
| | - Eva Goossens
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium; Faculty of Medicine and Health Sciences, Centre for Research and Innovation in Care, Division of Nursing and Midwifery, University of Antwerp, Antwerp, Belgium; Research Foundation Flanders (FWO), Brussels, Belgium
| | - Liesbet Van Bulck
- KU Leuven Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium; Research Foundation Flanders (FWO), Brussels, Belgium
| | - Michèle de Hosson
- Department of Adult Congenital Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Lieven Annemans
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
| | - Werner Budts
- KU Leuven Department of Cardiovascular Sciences, KU Leuven-University of Leuven, Leuven, Belgium; Division of Congenital and Structural Cardiology, University Hospitals Leuven, Leuven, Belgium
| | - Julie De Backer
- Department of Adult Congenital Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Stéphane Moniotte
- Division of Pediatric Cardiology, Cliniques Universitaires Saint-Luc (UCLouvain), Brussels, Belgium
| | - Arianne Marelli
- McGill Adult Unit for Congenital Heart Disease Excellence (MAUDE Unit), McGill University Health Center, Montreal, Quebec, Canada
| | - Katya De Groote
- Department of Pediatric Cardiology, Ghent University Hospital, Ghent, Belgium
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16
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Tica J, Guiñazú JR, Andrews CP, Davis MG, Essink B, Fogarty C, Kerwin E, Leroux-Roels I, Steenackers K, Vandermeulen C, David MP, Dezutter N, Fissette L, Koch J, Mesaros N. 119. A Respiratory Syncytial Virus Prefusion F Protein (RSVPreF3) Candidate Vaccine Administered in Older Adults in a Phase I/II Randomized Clinical Trial Is Well Tolerated. Open Forum Infect Dis 2020. [PMCID: PMC7778015 DOI: 10.1093/ofid/ofaa439.429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background RSV is a common cause of respiratory acute illness in older adults (OA). We evaluated safety and reactogenicity of RSVPreF3 candidate vaccine in young adults (YA) and OA. Methods In this phase I/II, placebo-controlled, multi-country trial (NCT03814590), YA aged 18–40 years were randomized 1:1:1:1 and received 2 doses of Low-, Medium- or High-dose of RSVPreF3 non-adjuvanted vaccine, or placebo, 2 months apart. Following favorable safety evaluation, a staggered enrolment with 2 steps followed in OA aged 60–80 years, who were randomized 1:1:1:1:1:1:1:1:1:1 to receive 1 of the 9 RSV vaccine formulations containing Low-, Medium- or High-dose of RSVPreF3 non-adjuvanted or adjuvanted with AS01E or AS01B, or placebo (same schedule). Safety/reactogenicity up to 1 month post-dose 1 are reported here. Results Exposed set was comprised of 48 YA and 1005 OA. Within 7 days post-dose 1, any solicited/unsolicited adverse event (AE) ranged from 58.3% to 83.3% across YA vaccinees (placebo YA: 58.3%) and from 29.9% to 84.2% across OA vaccinees (placebo OA: 33.7%) (Fig 1). Pain was the most common solicited local AE, being reported in ≤ 58.3% of YA (placebo YA: 0.0%) and at higher rates in the adjuvanted groups (≤ 75.7%) vs non-adjuvanted groups of OA (≤ 14.1%) and placebo OA (4.1%) (Fig 2A). Of solicited general AEs, fatigue (YA: ≤ 41.7% in vaccinees vs 50.0% in placebo; OA: ≤ 48.5% in vaccinees vs 16.3% in placebo) and headache (YA: ≤ 33.3% in vaccinees vs 16.7% in placebo; OA: ≤ 27.7% in vaccinees vs 8.2% in placebo) were most commonly reported (Fig 2B), while fever ≥ 38.0 °C was observed in ≤ 3.0% of OA vaccinees (placebo OA: 0.0%). Grade 3 solicited local and general AEs were observed in OA only, with erythema (≤ 4.9% in vaccinees vs 0.0% in placebo) and fatigue (≤ 2.0% in vaccinees vs 1.0% in placebo) being most common (Fig 2). No serious AEs (SAEs) were reported in YA. A number of 11 OA reported a SAE within 1 month post-dose 1, but none was fatal or assessed as vaccine-related. No clinically significant abnormalities occurred in hematological/biochemical parameters in any group. Figure 1. Percentage of participants presenting at least one type of solicited/unsolicited adverse event (AE) within 7 days post-dose 1 ![]()
Figure 2. Percentage of participants with at least one type of solicited adverse event (AE) within 7 days post-dose 1 ![]()
Conclusion First dose of RSVPreF3 candidate vaccine is well tolerated. AE rates tended to be higher after AS01B-adjuvanted formulations compared to other vaccine formulations. No safety concerns were raised. Funding GlaxoSmithKline Biologicals SA Disclosures Jelena Tica, PhD, GSK group of companies (Employee, Shareholder) Javier Ruiz Guiñazú, MD MSc, GSK group of companies (Employee, Shareholder) Charles P. Andrews, MD, GSK group of companies (Scientific Research Study Investigator) Charles Fogarty, MD, GSK group of companies (Grant/Research Support) Edward Kerwin, MD, Amphastar (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)AstraZeneca (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Boehringer Ingelheim (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Chiesi (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Cipla (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)GSK group of companies (Employee, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Mylan (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Novartis (Employee, Advisor or Review Panel member, Research Grant or Support, Speaker’s Bureau)other around 40 pharmaceutical companies (Other Financial or Material Support, conducted multicenter clinical research trials)Pearl (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Sunovion (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Theravance (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau) Isabel Leroux-Roels, MD PhD, GSK group of companies (Scientific Research Study Investigator) Corinne Vandermeulen, MD PhD, GSK group of companies (Other Financial or Material Support, My university only received Grant/Research Support) Marie-Pierre David, MSc, GSK group of companies (Employee, Shareholder) Nancy Dezutter, PhD, PharmD, RPh, GSK group of companies (Employee, Shareholder) Laurence Fissette, MSc, GSK group of companies (Employee) Juliane Koch, MD, GSK group of companies (Employee, Shareholder) Narcisa Mesaros, MD, MSc, GSK group of companies (Employee)
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Affiliation(s)
- Jelena Tica
- GSK, Wavre, Belgium, Wavre, Brabant Wallon, Belgium
| | | | - Charles P Andrews
- Diagnostics Research Group, San Antonio, TX, United States, San Antonio, Texas
| | - Matthew G Davis
- Rochester Clinical Research, Rochester, NY, United States, Rochester, New York
| | - Brandon Essink
- Meridian Clinical Research Omaha, Omaha, NE, United States, Omaha, Nebraska
| | - Charles Fogarty
- Spartanburg Medical Research, Spartanburg, SC, United States, Spartanburg, South Carolina
| | - Edward Kerwin
- Crisor, LLC c/o Clinical Research Institute of Southern Oregon, Medford, OR, United States, Medford, Oregon
| | | | - Katie Steenackers
- University of Antwerp, Antwerp, Belgium, Antwerp, Antwerpen, Belgium
| | | | | | | | | | - Juliane Koch
- GSK, Wavre, Belgium, Wavre, Brabant Wallon, Belgium
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Guiñazú JR, Tica J, Andrews CP, Davis MG, De Smedt P, Essink B, Fogarty C, Kerwin E, Leroux-Roels I, Vandermeulen C, David MP, Dezutter N, De Schrevel N, Fissette L, Mesaros N. 121. A Respiratory Syncytial Virus Prefusion F Protein (RSVPreF3) Candidate Vaccine Administered in Older Adults in a Phase I/II Randomized Clinical Trial Is Immunogenic. Open Forum Infect Dis 2020. [PMCID: PMC7777862 DOI: 10.1093/ofid/ofaa439.431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background RSV causes significant disease burden in older adults, since reinfections are common and may lead to severe disease presentations while only supportive treatment is available. We present immunogenicity of different formulations of an investigational vaccine (RSVPreF3) in young and older adults. Methods This is a phase I/II, placebo-controlled, multi-country trial (NCT03814590). Healthy adults aged 18–40 years were randomized 1:1:1:1 to receive 2 doses of either Low-, Medium- or High-dose of RSVPreF3 non-adjuvanted vaccine or placebo, 2 months apart. Following favorable safety outcomes, adults aged 60–80 years were randomized 1:1:1:1:1:1:1:1:1:1 in a 2-step staggered manner to receive 1 of the 9 RSV vaccine formulations containing Low-, Medium- or High-dose of RSVPreF3, non-adjuvanted or adjuvanted with AS01E or AS01B, or placebo (same schedule). Humoral and cellular-mediated immune responses are assessed before and after each dose; results up to 1 month post-dose 1 are shown here. Results Of 48 adults aged 18–40 years and 1005 aged 60–80 years included in the exposed set, 42 and 933, respectively, were part of per-protocol set at 1 month post-dose 1. RSVPreF3 IgG geometric mean antibody concentrations were 8.4–13.5 and 7.2–12.8 fold-higher at 1 month post-dose 1 vs baseline in the 18–40- and 60–80-year-old vaccinees, respectively (Fig 1A). RSV-A neutralization activity significantly increased in all RSV vaccinees, geometric mean antibody titers being 7.5–13.7 and 5.6–9.9 fold-higher in 18–40- and 60–80-year-olds, respectively, at 1 month post-dose 1 vs baseline (Fig 1B). Geometric mean ratios of the fold increase between RSVPreF3 IgG antibody concentrations and RSV-A neutralizing antibody titers ranged between 0.9–1.1 in 18–40-year-old and 1.3–1.5 in 60–80-year-old vaccinees. A robust RSVPreF3-specific CD4+ T-cell response was elicited at 1 month post-dose 1 vs baseline in both 18–40- and 60–80-year-olds (Fig 2). Figure 1. RSVPreF3 IgG geometric mean antibody concentrations (GMCs, enzyme-linked immunosorbent assay, panel A), RSV-A neutralizing geometric mean antibody titers (GMTs, neutralization assay, panel B) ![]()
Figure 2. RSVPreF3-specific CD4+ T-cells identified as expressing ≥2 markers among IL2, CD40L, TNF-□, IFN-□ (intracellular cytokine staining assay) ![]()
Conclusion One dose of RSVPreF3 candidate vaccine boosted humoral and cellular immune responses in all vaccinees. In older adults, higher humoral response, mostly neutralizing, was observed with increased RSVPreF3 antigen dosage and a tendency of higher cellular response was observed after adjuvanted formulations. Funding GlaxoSmithKline Biologicals SA Disclosures Javier Ruiz Guiñazú, MD MSc, GSK group of companies (Employee, Shareholder) Jelena Tica, PhD, GSK group of companies (Employee, Shareholder) Charles P. Andrews, MD, GSK group of companies (Scientific Research Study Investigator) Charles Fogarty, MD, GSK group of companies (Grant/Research Support) Edward Kerwin, MD, Amphastar (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)AstraZeneca (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Boehringer Ingelheim (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Chiesi (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Cipla (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)GSK group of companies (Employee, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Mylan (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Novartis (Employee, Advisor or Review Panel member, Research Grant or Support, Speaker’s Bureau)other around 40 pharmaceutical companies (Other Financial or Material Support, conducted multicenter clinical research trials)Pearl (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Sunovion (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau)Theravance (Consultant, Scientific Research Study Investigator, Advisor or Review Panel member, Speaker’s Bureau) Isabel Leroux-Roels, MD PhD, GSK group of companies (Scientific Research Study Investigator) Corinne Vandermeulen, MD PhD, GSK group of companies (Other Financial or Material Support, My university only received Grant/Research Support) Marie-Pierre David, MSc, GSK group of companies (Employee, Shareholder) Nancy Dezutter, PhD, PharmD, RPh, GSK group of companies (Employee, Shareholder) Nathalie De Schrevel, PhD, GSK group of companies (Employee) Laurence Fissette, MSc, GSK group of companies (Employee) Narcisa Mesaros, MD, MSc, GSK group of companies (Employee)
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Affiliation(s)
| | - Jelena Tica
- GSK, Wavre, Belgium, Wavre, Brabant Wallon, Belgium
| | - Charles P Andrews
- Diagnostics Research Group, San Antonio, TX, United States, San Antonio, Texas
| | - Matthew G Davis
- Rochester Clinical Research, Rochester, NY, United States, Rochester, New York
| | - Philippe De Smedt
- University of Antwerp, Antwerp, Belgium, Antwerp, Antwerpen, Belgium
| | - Brandon Essink
- Meridian Clinical Research Omaha, Omaha, NE, United States, Omaha, Nebraska
| | - Charles Fogarty
- Spartanburg Medical Research, Spartanburg, SC, United States, Spartanburg, South Carolina
| | - Edward Kerwin
- Crisor, LLC c/o Clinical Research Institute of Southern Oregon, Medford, OR, United States, Medford, Oregon
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Luyten J, Kessels R, Vandermeulen C, Beutels P. Value Frameworks for Vaccines: Which Dimensions Are Most Relevant? Vaccines (Basel) 2020; 8:E628. [PMID: 33126454 PMCID: PMC7712404 DOI: 10.3390/vaccines8040628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/14/2020] [Accepted: 10/22/2020] [Indexed: 11/20/2022] Open
Abstract
In addition to more narrow criteria such as safety, effectiveness and cost-effectiveness, vaccines can also be evaluated based on broader criteria such as their economic impact, contribution to disease eradication objectives, caregiver aspects, financial protection offered, equity or social acceptability. We summarize a survey executed in a sample of the population (n = 1000) in Flanders, Belgium, in which we investigated support for using these broader criteria to evaluate vaccines for funding decisions. By means of both favourable and unfavourable framings of a hypothetical vaccine across 40 value dimensions, we find support for the view that people indeed consider a broad range of medical and socio-economic criteria relevant. Several of these are not incorporated in standard evaluation frameworks for vaccines. The different results we find for different framings highlight the importance of developing a consistent a priori value framework for vaccine evaluation, rather than evaluating vaccines on an ad hoc basis.
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Affiliation(s)
- Jeroen Luyten
- KU Leuven, Department of Public Health and Primary Care, Leuven Institute for Healthcare Policy, Kapucijnenvoer 35, PO 7001, 3000 Leuven, Belgium
| | - Roselinde Kessels
- Department of Data Analytics and Digitalization, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands;
- Department of Economics, City Campus, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium
| | - Corinne Vandermeulen
- KU Leuven, Department of Public Health and Primary Care, Leuven University Vaccinology Centre, Kapucijnenvoer 35, PO 7001, 3000 Leuven, Belgium;
| | - Philippe Beutels
- Centre for Health Economics Research and Modelling Infectious Diseases, Vaccine and Infectious Disease Institute, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium;
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Boey L, Roelants M, Vandermeulen C. Increased vaccine uptake and less perceived barriers toward vaccination in long-term care facilities that use multi-intervention manual for influenza campaigns. Hum Vaccin Immunother 2020; 17:673-680. [PMID: 32692943 DOI: 10.1080/21645515.2020.1788327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Seasonal influenza is an annually recurring threat to residents of long-term care facilities (LTCFs) since high age and chronic disease diminish immune response following vaccination. Although immunization of healthcare workers (HCWs) has proven to be an added value, coverage rates remain low. A ready-to-use instruction manual was designed to facilitate the implementation of interventions known to increase vaccination coverage in healthcare institutions. It includes easy-access vaccination, role model involvement, personalized promotional material, education and extensive communication. We evaluated this manual during the 2017-vaccination campaign in 11 LTCFs in Belgium. Vaccination coverage before and after the campaign was recorded by the LTCFs and the usefulness of the manual was assessed by interviewing the organizers of the local campaigns. Attitudes toward vaccination and reasons for vaccination were evaluated with a quantitative survey in HCWs before and after the campaign. The mean vaccination coverage reported by the LTCFs was 54% (range: 35-72%) in 2016 and 68% (range: 45-81%) in 2017. After the campaign, HCWs were less likely to expect side effects after influenza vaccination (OR (95%CI): 0.4 (0.2-0.9)) or to oppose vaccination (OR (95%CI): 0.3 (0.1-0.9)). The majority (>60%) indicated to be well informed about the risks of influenza and the efficacy of the vaccine. The main reason for vaccination in those who previously refused it was resident protection. The manual was found useful by the organizers of the campaigns. We conclude that the use of an intervention manual may support vaccination uptake and decrease perceived barriers toward influenza vaccination in countries without mandatory vaccination in HCWs.
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Affiliation(s)
- Lise Boey
- Leuven University Vaccinology Center, Department of Public Health and Primary Care, Leuven, Belgium
| | - Mathieu Roelants
- Department of Public Health and Primary Care, Environment and Health, Leuven, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center, Department of Public Health and Primary Care, Leuven, Belgium.,Department of Public Health and Primary Care, Environment and Health, Leuven, Belgium
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Boey L, Bosmans E, Ferreira LB, Heyvaert N, Nelen M, Smans L, Tuerlinckx H, Roelants M, Claes K, Derdelinckx I, Janssens W, Mathieu C, Van Cleemput J, Vos R, Vandermeulen C. Vaccination coverage of recommended vaccines and determinants of vaccination in at-risk groups. Hum Vaccin Immunother 2020; 16:2136-2143. [PMID: 32614656 PMCID: PMC7553698 DOI: 10.1080/21645515.2020.1763739] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Upon exposure to vaccine-preventable diseases, certain individuals are at increased risk for complications due to preexisting diseases, age or immunosuppressive treatment. Vaccination against influenza, pneumococcal disease and hepatitis B (for some groups) is advised in addition to standard vaccination against diphtheria, tetanus and pertussis. We estimated the vaccination coverage and determinants of recommended vaccinations in patients with diabetes mellitus type 1 (n = 173) and type 2 (n = 177), chronic kidney disease (CKD) (n = 138), heart failure (n = 200), chronic obstructive pulmonary disease (COPD) (n = 187), HIV (n = 201) or solid organ transplantation (SOT) (n = 201) in a monocentric study. Vaccination data were retrieved from documents provided by patients and general practitioners, and from the Flemish vaccination register. Less than 10% had received all recommended vaccines. Overall, 29% of subjects were vaccinated against diphtheria-tetanus, 10% against pertussis, 44% against influenza, 32% against pneumococcal disease and 24% of HIV patients and 31% of CKD patients against hepatitis B. Age was positively associated with vaccination against influenza (OR:2.0, p < .01) and pneumococcal disease (OR:2.6, p < .001). Patients with COPD, HIV and SOT were more likely to be vaccinated against influenza (OR:2.8, p < .001, OR:1.8, p < .05; OR:2.0, p < .001, respectively) and pneumococcal disease (OR:2.9, p < .001, OR:25.0, p < .001; OR:2.6, p < .001, respectively) than patients with heart failure. Reason for non-vaccination were concerns about effectiveness, necessity and side effects of influenza vaccines, and not being aware of the recommendation for pneumococcal disease. Initiatives to monitor the vaccination status of vulnerable patients are needed, which is why we advocate systematic vaccination registration and frequent communication about vaccination.
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Affiliation(s)
- Lise Boey
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Eline Bosmans
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Liane Braz Ferreira
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nathalie Heyvaert
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Melissa Nelen
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Lisa Smans
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Hanne Tuerlinckx
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Mathieu Roelants
- Environment and Health, Department of Public Health and Primary Care, KU Leuven , Leuven, Belgium
| | - Kathleen Claes
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven , Leuven, Belgium
| | - Inge Derdelinckx
- Department of General Internal Medicine, University Hospitals of Leuven , Leuven, Belgium
| | - Wim Janssens
- Department of Respiratory Diseases, University Hospitals of Leuven , Leuven, Belgium
| | - Chantal Mathieu
- Department of Endocrinology, University Hospitals of Leuven , Leuven, Belgium
| | - Johan Van Cleemput
- Department of Cardiology, University Hospitals of Leuven , Leuven, Belgium
| | - Robin Vos
- Department of Respiratory Diseases - Lung Transplantation Unit, University Hospitals of Leuven , Leuven, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center , Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium.,Environment and Health, Department of Public Health and Primary Care, KU Leuven , Leuven, Belgium
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Beran J, Leroux-Roels G, Van Damme P, de Hoon J, Vandermeulen C, Al-Ibrahim M, Johnson C, Peterson J, Baker S, Seidl C, Dreisbach A, Karsten A, Corsaro B, Henry O, Lattanzi M, Bebia Z. Safety and immunogenicity of fully liquid and lyophilized formulations of an investigational trivalent group B streptococcus vaccine in healthy non-pregnant women: Results from a randomized comparative phase II trial. Vaccine 2020; 38:3227-3234. [DOI: 10.1016/j.vaccine.2020.02.085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 02/20/2020] [Accepted: 02/29/2020] [Indexed: 01/10/2023]
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Clark EC, De Rop F, Jimenez Garcia IA, Nogal Macho A, Alexander Mannette R, Nova Blanco JR, Ramaekers K, Vandermeulen C. A Systems Map to Elucidate the Factors Influencing Vaccine Coverage. ACTA ACUST UNITED AC 2019. [DOI: 10.11116/tdi2019.3.5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract This abstract is a report of the investigations by a transdisciplinary team working on the ‘Vaccine Confidence’ challenge (Supplement 1). Since their introduction, vaccines have been one of the most successful health interventions in medicine. Prior to
vaccination programs against poliomyelitis, more than 350,000 cases of polio were reported annually worldwide, a number that decreased to just 33 reported cases in 20181. Additionally, between 2000 and 2017, the measles vaccination program is estimated to have prevented 21.1 million deaths.2
However, in 2018 more than 19 million children under one year of age did not receive the recommended WHO vaccines.3 A recent rise in anti-vaccine or vaccination-hesitant mentalities has led to decreasing vaccine coverage in several Western countries. The WHO identified three C’s as main
determinants of vaccine hesitancy, namely Complacency, Convenience in accessing vaccines, and Confidence. However, the term ‘vaccine hesitancy’ tends to be interpreted as a lack of confidence in vaccines and vaccinations for various reasons. Nevertheless, the goal of vaccination
is to reach herd immunity by reaching a high vaccination coverage (90‐95% vaccinated) to stop the circulation of vaccine preventable diseases. We wanted to give equal attention to the three C’s as they are equally important in reaching herd immunity. <target target-type="page-num"
id="p-116"/>Therefore, we chose to present the problem as a challenge of ‘vaccine coverage,’ rather than ‘vaccine hesitancy’ or ‘vaccine confidence’. In order to understand the complexity of the problem, we have developed a systems map which relates different
global factors that impact an individual’s vaccination decision-making, as well as their likelihood of receiving vaccinations (Supplement 2). To create this map we assembled the information for the variables and connections from literature studies of peer-reviewed articles and interviews
with stakeholders, kept anonymous, in the field of vaccination or healthcare (Supplements 3 & 4). This approach was selected as it provides a wide perspective that allows academics, governmental authorities, and lawmakers to better assess the various factors that affect vaccine coverage,
and how they are related. The work leading to the map was presented to the public at a symposium (Supplement 5). Our map identifies essential factors such as psychology, education, economy, vaccine technology, political and environmental sphere, sources of information, and healthcare in order
to understand what governs vaccination coverage. The map emphasizes how various factors and determinants are often interrelated, as opposed to the isolated factors described in previous literature. We identified important discrepancies between developed and developing countries regarding the
factors that drive vaccine-related decision-making and availability. The systems map could ultimately serve as a tool to better understand the multifaceted problem of suboptimal vaccination coverage. Vaccine hesitancy as a threat to vaccination coverage is a complex and wicked problem
with many underlying contributing factors, as has been depicted in our systems map on vaccine coverage. Our systems map allows more in-depth insights, not only into which factors are contributing, but also into the relationship between factors. Solving the decrease in vaccination coverage
will require different types of solutions which can be developed by using a transdisciplinary approach.
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Affiliation(s)
- Ellie Cassandra Clark
- 1KU Leuven, Honours Programme Transdisciplinary Insights, Institute for the Future, Leuven, Belgium
| | - Florian De Rop
- 1KU Leuven, Honours Programme Transdisciplinary Insights, Institute for the Future, Leuven, Belgium
| | - Iria Anne Jimenez Garcia
- 1KU Leuven, Honours Programme Transdisciplinary Insights, Institute for the Future, Leuven, Belgium
| | - Ana Nogal Macho
- 1KU Leuven, Honours Programme Transdisciplinary Insights, Institute for the Future, Leuven, Belgium
| | - Ruel Alexander Mannette
- 1KU Leuven, Honours Programme Transdisciplinary Insights, Institute for the Future, Leuven, Belgium
| | | | - Kaat Ramaekers
- 7KU Leuven, Department of Microbiology, Immunology & Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Leuven, Belgium
| | - Corinne Vandermeulen
- 9KU Leuven, Department of Public Health and Primary Care, Environment and Health, Leuven, Belgium
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Van Damme P, Leroux-Roels G, Vandermeulen C, De Ryck I, Tasciotti A, Dozot M, Moraschini L, Testa M, Arora AK. Safety and immunogenicity of non-typeable Haemophilus influenzae-Moraxella catarrhalis vaccine. Vaccine 2019; 37:3113-3122. [DOI: 10.1016/j.vaccine.2019.04.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 03/26/2019] [Accepted: 04/14/2019] [Indexed: 01/28/2023]
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Koole M, Schmidt ME, Hijzen A, Ravenstijn P, Vandermeulen C, Van Weehaeghe D, Serdons K, Celen S, Bormans G, Ceusters M, Zhang W, Van Nueten L, Kolb H, de Hoon J, Van Laere K. 18F-JNJ-64413739, a Novel PET Ligand for the P2X7 Ion Channel: Radiation Dosimetry, Kinetic Modeling, Test-Retest Variability, and Occupancy of the P2X7 Antagonist JNJ-54175446. J Nucl Med 2018; 60:683-690. [PMID: 30262518 DOI: 10.2967/jnumed.118.216747] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/18/2018] [Indexed: 12/27/2022] Open
Abstract
The P2X7 receptor (P2X7R) is an adenosine triphosphate-gated ion channel that is predominantly expressed on microglial cells in the central nervous system. We report the clinical qualification of P2X7-specific PET ligand 18F-JNJ-64413739 in healthy volunteers, including dosimetry, kinetic modeling, test-retest variability, and blocking by the P2X7 antagonist JNJ-54175446. Methods: Whole-body dosimetry was performed in 3 healthy male subjects by consecutive whole-body PET/CT scanning, estimation of the normalized cumulated activity, and calculation of the effective dose using OLINDA (v1.1). Next, 5 healthy male subjects underwent a 120-min dynamic 18F-JNJ-64413739 PET/MRI scan with arterial blood sampling to determine the appropriate kinetic model. For this purpose, 1- and 2-tissue compartment models and Logan graphic analysis (LGA) were evaluated for estimating regional volumes of distribution (VT). PET/MRI scanning was repeated in 4 of these subjects to evaluate medium-term test-retest variability (interscan interval, 26-97 d). For the single-dose occupancy study, 8 healthy male subjects underwent baseline and postdose 18F-JNJ-64413739 PET/MRI scans 4-6 h after the administration of a single oral dose of JNJ-54175446 (dose range, 5-300 mg). P2X7 occupancies were estimated using a Lassen plot and regional baseline and postdose VT Results: The average (mean ± SD) effective dose was 22.0 ± 1.0 μSv/MBq. The 2-tissue compartment model was the most appropriate kinetic model, with LGA showing very similar results. Regional 2-tissue compartment model VT values were about 3 and were rather homogeneous across all brain regions, with slightly higher estimates for the thalamus, striatum, and brain stem. Between-subject VT variability was relatively high, with cortical VT showing an approximate 3-fold range across subjects. As for time stability, the acquisition time could be reduced to 90 min. The average regional test-retest variability values were 10.7% ± 2.2% for 2-tissue compartment model VT and 11.9% ± 2.2% for LGA VT P2X7 occupancy approached saturation for single doses of JNJ-54175446 higher than 50 mg, and no reference region could be identified. Conclusion: 18F-JNJ-64413739 is a suitable PET ligand for the quantification of P2X7R expression in the human brain. It can be used to provide insight into P2X7R expression in health and disease, to evaluate target engagement by P2X7 antagonists, and to guide dose selection.
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Affiliation(s)
- Michel Koole
- Division of Nuclear Medicine and Molecular Imaging, University Hospitals Leuven, Leuven, Belgium.,Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | | | - Anja Hijzen
- Janssen Research and Development, Beerse, Belgium
| | | | - Corinne Vandermeulen
- Center for Clinical Pharmacology, University Hospitals Leuven, Leuven, Belgium; and
| | - Donatienne Van Weehaeghe
- Division of Nuclear Medicine and Molecular Imaging, University Hospitals Leuven, Leuven, Belgium
| | - Kim Serdons
- Division of Nuclear Medicine and Molecular Imaging, University Hospitals Leuven, Leuven, Belgium
| | - Sofie Celen
- Laboratory for Radiopharmaceutical Research, KU Leuven, Leuven, Belgium
| | - Guy Bormans
- Laboratory for Radiopharmaceutical Research, KU Leuven, Leuven, Belgium
| | | | - Wei Zhang
- Janssen Research and Development, Beerse, Belgium
| | | | | | - Jan de Hoon
- Center for Clinical Pharmacology, University Hospitals Leuven, Leuven, Belgium; and
| | - Koen Van Laere
- Division of Nuclear Medicine and Molecular Imaging, University Hospitals Leuven, Leuven, Belgium .,Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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de Hoon J, Van Hecken A, Vandermeulen C, Herbots M, Kubo Y, Lee E, Eisele O, Vargas G, Gabriel K. Phase 1, randomized, parallel-group, double-blind, placebo-controlled trial to evaluate the effects of erenumab (AMG 334) and concomitant sumatriptan on blood pressure in healthy volunteers. Cephalalgia 2018; 39:100-110. [PMID: 29783863 PMCID: PMC6348461 DOI: 10.1177/0333102418776017] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES The aim of this study was to assess the effects of concomitant administration of erenumab and sumatriptan on resting blood pressure, pharmacokinetics, safety, and tolerability in healthy subjects. METHODS In this phase 1, parallel-group, one-way crossover, double-blind, placebo-controlled study, healthy adult subjects were randomized (1:2) to receive either intravenous placebo and subcutaneous sumatriptan 12 mg (i.e. two 6-mg injections separated by 1 hour) or intravenous erenumab 140 mg and subcutaneous sumatriptan 12 mg. Blood pressure was measured pre-dose and at prespecified times post-dose. The primary endpoint was individual time-weighted averages of mean arterial pressure, measured from 0 hours to 2.5 hours after the first dose of sumatriptan. Pharmacokinetic parameters for sumatriptan were evaluated by calculating geometric mean ratios (erenumab and sumatriptan/placebo and sumatriptan). Adverse events and anti-erenumab antibodies were also evaluated. RESULTS A total of 34 subjects were randomized and included in the analysis. Least squares mean (standard error) time-weighted averages of mean arterial pressure were 87.4 (1.0) mmHg for the placebo and sumatriptan group and 87.4 (1.2) mmHg for the erenumab and sumatriptan group. Mean difference in mean arterial pressure between groups was -0.04 mmHg (90% confidence interval: -2.2, 2.1). Geometric mean ratio estimates for maximum plasma concentration of sumatriptan was 0.95 (90% confidence interval: 0.82, 1.09), area under the plasma concentration-time curve (AUC) from time 0 to 6 hours was 0.98 (90% confidence interval: 0.93, 1.03), and AUC from time 0 to infinity was 1.00 (90% confidence interval: 0.96, 1.05). No clinically relevant safety findings for co-administration of sumatriptan and erenumab were identified. CONCLUSION Co-administration of erenumab and sumatriptan had no additional effect on resting blood pressure or on pharmacokinetics of sumatriptan. Trial registration: ClinicalTrials.gov, NCT02741310.
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Affiliation(s)
- Jan de Hoon
- 1 Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Anne Van Hecken
- 1 Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- 1 Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Marissa Herbots
- 1 Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Yumi Kubo
- 2 Global Biostatistical Science, Amgen, Thousand Oaks, CA, USA
| | - Ed Lee
- 3 Clinical Pharmacology Modeling and Simulation, Amgen, Thousand Oaks, CA, USA
| | - Osa Eisele
- 4 Global Patient Safety, Amgen, Thousand Oaks, CA, USA
| | - Gabriel Vargas
- 5 Neuroscience Early Development, Amgen, Thousand Oaks, CA, USA
| | - Kristin Gabriel
- 5 Neuroscience Early Development, Amgen, Thousand Oaks, CA, USA
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Boey L, Bral C, Roelants M, De Schryver A, Godderis L, Hoppenbrouwers K, Vandermeulen C. Attitudes, believes, determinants and organisational barriers behind the low seasonal influenza vaccination uptake in healthcare workers - A cross-sectional survey. Vaccine 2018; 36:3351-3358. [PMID: 29716777 DOI: 10.1016/j.vaccine.2018.04.044] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/13/2018] [Accepted: 04/17/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND Seasonal influenza threatens hospitalised patients and residents of nursing homes annually. Due to age and chronic disease their protection following immunisation is diminished. Additional immunisation of direct contacts and in particular healthcare workers (HCWs) has proven added value. As vaccination coverage in HCWs remains low, we aimed to gain insight in the factors behind the demotivation for influenza vaccination. METHODS Attitudes and believes towards influenza vaccination and socio-demographic and professional determinants were surveyed in 5141 Belgian HCWs from 13 hospitals and 14 nursing homes. Additionally, influenza campaign coordinators of the participating healthcare institutions were interviewed about the factors of success/failure in their campaigns. RESULTS The mean vaccination coverage registered by the participating healthcare institutions was 40.4% in the hospitals and 45.3% in the nursing homes. Overall, up to 90% of HCWs found it important not to infect their patients. However, only 20% of non-vaccinated HCWs considered influenza vaccination a duty to not harm their patients. Up to 40% of unvaccinated staff believed they could get influenza after vaccination and that vaccination weakens their immune system. Also, only about 20% of unvaccinated staff thought to have a high chance of getting influenza. Reasons for unvaccinated staff to get vaccinated in the future are self-protection and protection of family members. Factors that positively influenced vaccination coverage are encouragement by supervisors (OR, hospitals: 7.1, p < 0.001; nursing homes: 7.5, p < 0.001) and well-organized vaccination campaigns with on-site vaccination. Factors that negatively affected vaccination coverage are misconceptions about influenza and its vaccine (OR, range 0.1-0.7, p < 0.001 for most misconceptions) and underestimation of the risk of contracting influenza by patients or HCWs (OR of perceived susceptibility, range 2.1-5.1, p < 0.001 for most factors). CONCLUSION There is a need for guidance for the organization of seasonal influenza campaigns, in which education, communication and easy accessible vaccination are promoted.
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Affiliation(s)
- Lise Boey
- Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium.
| | - Charlotte Bral
- Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Mathieu Roelants
- Environment and Health, Department of Public Health and Primary Care, KU Leuven, Belgium
| | - Antoon De Schryver
- Department of Epidemiology and Social Medicine, University of Antwerp, Belgium; IDEWE Occupational Health Services, Heverlee-Leuven, Belgium
| | - Lode Godderis
- Environment and Health, Department of Public Health and Primary Care, KU Leuven, Belgium; IDEWE Occupational Health Services, Heverlee-Leuven, Belgium
| | - Karel Hoppenbrouwers
- Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium; Environment and Health, Department of Public Health and Primary Care, KU Leuven, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
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27
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Maertens K, Braeckman T, Blaizot S, Theeten H, Roelants M, Hoppenbrouwers K, Leuridan E, Van Damme P, Vandermeulen C. Coverage of recommended vaccines during pregnancy in Flanders, Belgium. Fairly good but can we do better? Vaccine 2018; 36:2687-2693. [PMID: 29627238 DOI: 10.1016/j.vaccine.2018.03.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 03/08/2018] [Accepted: 03/13/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND In Flanders, Belgium, pertussis vaccination is recommended since 2013 and available free-of-charge in every pregnancy between 24 and 32 weeks of gestation. Influenza vaccination is recommended for more than 10 years with a co-payment system in the second or third trimester of pregnancy, when pregnancy coincides with the influenza season. This study aims to estimate the coverage of pertussis and influenza vaccination during pregnancy in 2016 and to determine predictors for missing vaccination. METHODS Postpartum women were visited at home for a vaccination coverage survey using an Expanded Program on Immunization (EPI)-based two-stage cluster sampling design. Predictors for missed vaccination were identified using a multiple logistic regression model. RESULTS Among 481 participating women, 69.3% were vaccinated against pertussis and 47.2% were vaccinated against influenza. Moreover, 65.3% of pertussis vaccine recipients and 96.9% of influenza vaccine recipients were vaccinated within the recommended gestational window. Surprisingly, among women who were completely informed (i.e. on disease-associated risks, maternal vaccination costs and recommendations), still 12.4% were unvaccinated against pertussis and 23.9% against influenza. In the final models, the only common predictor of missing maternal pertussis and influenza vaccination was multiparity. Significant predictors of maternal pertussis vaccination were family income (less likely if unknown or low (< €3000) than if moderate (€3001-€4000)) and hospital of delivery (less likely if >800 annual deliveries than <800). Significant predictors of maternal influenza vaccination, though with less straight-forward associations, were maternal ethnicity and educational level, involvement of a gynaecologist in pregnancy follow-up, and characteristics of the hospital of delivery. CONCLUSION In Flanders, more than two-third of pregnant women receives pertussis vaccination but less than half of them receives the influenza vaccine. Further improvement for both maternal vaccination programs can be achieved by targeting the underserved populations and diminishing vaccination hurdles.
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Affiliation(s)
- Kirsten Maertens
- Centre for the Evaluation of Vaccination, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
| | - Tessa Braeckman
- Centre for the Evaluation of Vaccination, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Stéphanie Blaizot
- Centre for Health Economics Research and Modelling Infectious Diseases, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Heidi Theeten
- Centre for the Evaluation of Vaccination, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Mathieu Roelants
- Environment and Health, KU Leuven, Kapucijnenvoer 35 blok d, 3000 Leuven, Belgium
| | - Karel Hoppenbrouwers
- Environment and Health, KU Leuven, Kapucijnenvoer 35 blok d, 3000 Leuven, Belgium
| | - Elke Leuridan
- Centre for the Evaluation of Vaccination, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Pierre Van Damme
- Centre for the Evaluation of Vaccination, VAXINFECTIO, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center, KU Leuven, Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
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Moreira ED, Giuliano AR, de Hoon J, Iversen OE, Joura EA, Restrepo J, Van Damme P, Vandermeulen C, Ellison MC, Krick A, Shields C, Heiles B, Luxembourg A. Safety profile of the 9-valent human papillomavirus vaccine: assessment in prior quadrivalent HPV vaccine recipients and in men 16 to 26 years of age. Hum Vaccin Immunother 2017; 14:396-403. [PMID: 29211620 PMCID: PMC5806635 DOI: 10.1080/21645515.2017.1403700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
A 9-valent HPV (9vHPV) vaccine has been developed to protect against HPV type 6/11/16/18/31/33/45/52/58-related infection and disease. Previous safety analyses from 7 clinical trials conducted in 9vHPV vaccine recipients 9–26 years of age, including comparisons of 9vHPV and quadrivalent HPV (qHPV) vaccines in girls and women 16–26 years of age, showed that the 9vHPV vaccine was generally well tolerated. Additional safety analyses were conducted to include the results of new clinical studies. The safety profile of the 9vHPV vaccine in prior qHPV vaccine recipients (n = 3756 from 1 randomized controlled trial and 2 open-label extension studies) and young men (n = 248 9vHPV and n = 248 qHPV vaccine recipients from 1 randomized controlled trial) was evaluated. Vaccine was administered as a 3-dose regimen (at Day 1 and Months 2 and 6), and adverse events (AEs) were monitored. The most common AEs were injection-site events (91.1% and 79.0% in prior qHPV vaccine recipients and young men, respectively), the majority of which were mild. Discontinuations due to an AE were rare (0.2% and 0.0% among prior qHPV vaccine recipients and young men, respectively). In young men, the AE profile of the 9vHPV vaccine was generally similar to that of the qHPV vaccine. Overall, the 9vHPV vaccine was generally well tolerated in prior qHPV vaccine recipients and in young men, with an AE profile generally consistent with that previously reported with the broader clinical program.
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Affiliation(s)
- E D Moreira
- a Centro de Pesquisa Clínica, Associação Obras Sociais Irmã Dulce and Oswaldo Cruz Foundation, Brazilian Ministry of Health , Salvador , Bahia , Brazil
| | - A R Giuliano
- b Department of Cancer Epidemiology , Center for Infection Research (CIRC), Moffitt Cancer Center , Tampa , Florida , USA
| | - J de Hoon
- c Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences , KU Leuven , Leuven , Belgium
| | - O-E Iversen
- d Department of Clinical Science , University of Bergen/Womens Clinic, Haukeland University Hospital , Bergen , Norway
| | - E A Joura
- e Department of Gynecology , Comprehensive Cancer Center, Medical University of Vienna , Vienna , Austria
| | - J Restrepo
- f Fundación Centro de Investigación Clínica CIC , Medellín , Colombia
| | - P Van Damme
- g University of Antwerp, Vaccine & Infectious Disease Institute, Centre for the Evaluation of Vaccination , Antwerp , Belgium
| | - C Vandermeulen
- h Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences , KU Leuven , Leuven , Belgium
| | - M C Ellison
- i Merck & Co. Inc., Kenilworth , New Jersey , USA
| | - A Krick
- i Merck & Co. Inc., Kenilworth , New Jersey , USA
| | - C Shields
- i Merck & Co. Inc., Kenilworth , New Jersey , USA
| | - B Heiles
- i Merck & Co. Inc., Kenilworth , New Jersey , USA
| | - A Luxembourg
- i Merck & Co. Inc., Kenilworth , New Jersey , USA
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29
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Sesay S, Brzostek J, Meyer I, Donazzolo Y, Leroux-Roels G, Rouzier R, Astruc B, Szymanski H, Toursarkissian N, Vandermeulen C, Kowalska E, Van Damme P, Salamand C, Pepin S. Safety, immunogenicity, and lot-to-lot consistency of a split-virion quadrivalent influenza vaccine in younger and older adults: A phase III randomized, double-blind clinical trial. Hum Vaccin Immunother 2017; 14:596-608. [PMID: 28968138 PMCID: PMC5861783 DOI: 10.1080/21645515.2017.1384106] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Here, we report a randomized multicenter phase III trial assessing the lot-to-lot consistency of the 2014–2015 Northern Hemisphere quadrivalent split-virion inactivated influenza vaccine (IIV4; Sanofi Pasteur) and comparing its immunogenicity and safety with that of trivalent inactivated influenza vaccine (IIV3) in younger and older adults (EudraCT no. 2014-000785-21). Younger (18–60 y, n = 1114) and older (>60 y, n = 1111) adults were randomized 2:2:2:1:1 to receive a single dose of one of three lots of IIV4, the licensed IIV3 containing the B Yamagata lineage strain, or an investigational IIV3 containing the B Victoria lineage strain. Post-vaccination (day 21) hemagglutination inhibition antibody titers were equivalent for the three IIV4 lots. For the pooled IIV4s vs. IIV3, hemagglutination inhibition antibody titers were also non-inferior for the A strains, non-inferior for the B strain when present in the comparator IIV3, and superior for the B strain lineage when absent from the comparator IIV3. For all vaccine strains, seroprotection rates were ≥98% in younger adults and ≥90% in older adults. IIV4 also increased seroneutralizing antibody titers against all three vaccine strains of influenza. All vaccines were well tolerated, with no safety concerns identified. Solicited injection-site reactions were similar for IIV4 and IIV3 and mostly grade 1 and transient. This study showed that in younger and older adults, IIV4 had a similar safety profile as the licensed IIV3 and that including a second B strain lineage in IIV4 provided superior immunogenicity for the added B strain without affecting the immunogenicity of the three IIV3 strains.
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Affiliation(s)
| | - Jerzy Brzostek
- b Clinic of Infectious Diseases Health Care Team , Dębica , Poland
| | - Ingo Meyer
- c CRS Clinical Research Services Kiel GmbH , Lübeck , Germany
| | | | - Geert Leroux-Roels
- e Center for Vaccinology, Ghent University and University Hospital , Gent , Belgium
| | - Régine Rouzier
- f Centre CAP, Centre Médical Odysseum , Montpellier , France
| | | | - Henryk Szymanski
- h St Hedwig of Silesia Hospital , Department of Paediatrics , Prusicka , Trzebnica , Poland
| | | | | | | | - Pierre Van Damme
- l Centre for the Evaluation of Vaccination, Vaccine & Infectious Disease Institute , Antwerpen (Wilrijk) , Belgium
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30
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de Hoon J, Van Hecken A, Vandermeulen C, Yan L, Smith B, Chen JS, Bautista E, Hamilton L, Waksman J, Vu T, Vargas G. Phase I, Randomized, Double-blind, Placebo-controlled, Single-dose, and Multiple-dose Studies of Erenumab in Healthy Subjects and Patients With Migraine. Clin Pharmacol Ther 2017; 103:815-825. [PMID: 28736918 DOI: 10.1002/cpt.799] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 07/13/2017] [Accepted: 07/14/2017] [Indexed: 12/22/2022]
Abstract
Monoclonal antibodies (mAbs) targeting calcitonin gene-related peptide (CGRP) signaling are being explored as prophylactic treatments for migraine. Erenumab (AMG 334) is the first potent, selective, and competitive human mAb antagonist of the CGRP receptor. We report the data from two phase I studies assessing the safety, pharmacokinetics (PK), and pharmacodynamics of single and multiple administrations of erenumab in healthy subjects and patients with migraine. The results indicate that the PK profile of erenumab is nonlinear from 1 mg to 70 mg and the linear portion of the clearance from 70 mg to 210 mg is consistent with other human immunoglobulin G2 antibodies. Single doses of erenumab resulted in >75% inhibition of capsaicin-induced dermal blood flow, with no apparent dose-dependency for erenumab ≥21 mg. Erenumab was generally well tolerated, with an acceptable safety profile, supporting further clinical development of erenumab for migraine prevention.
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Affiliation(s)
- Jan de Hoon
- Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Anne Van Hecken
- Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- Center for Clinical Pharmacology, University Hospitals of Leuven, Leuven, Belgium
| | - Lucy Yan
- Early Development, Amgen, Thousand Oaks, California, USA
| | - Brian Smith
- Early Development, Amgen, Thousand Oaks, California, USA
| | | | - Edgar Bautista
- Early Development, Amgen, Thousand Oaks, California, USA
| | - Lisa Hamilton
- Global Biostatistical Science, Amgen Ltd., Uxbridge, UK
| | | | - Thuy Vu
- Early Development, Amgen, Thousand Oaks, California, USA
| | - Gabriel Vargas
- Early Development, Amgen, Thousand Oaks, California, USA
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Harrington L, Van Damme P, Vandermeulen C, Mali S. Recruitment barriers for prophylactic vaccine trials: A study in Belgium. Vaccine 2017; 35:6598-6603. [PMID: 29074202 DOI: 10.1016/j.vaccine.2017.10.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 12/18/2022]
Abstract
Recruitment of volunteers is one of the main challenges in clinical trial management, and there is little information about recruitment barriers for preventative vaccine trials. We investigated both the recruitment barriers and recruitment strategies for preventive vaccine trials in Belgium. A 10 min survey was used as well as interviews of staff at all clinical trial sites in Belgium that regularly perform vaccine trials. We observed that there are successful recruitment strategies and few recruitment issues for trials involving healthy adults and those over 65 years old. However, challenges face the recruitment of paediatric populations, pregnant women, patients and the very elderly (over 85 years old). From these results, we identified three priority areas to increase recruitment for prophylactic vaccine trials in Belgium. These are: the lack of public knowledge about infectious diseases; the lack of resources of healthcare professionals to take part in clinical trials; and the burden to potential volunteers to take part in a trial. These were discussed with stakeholders and solutions were proposed.
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Affiliation(s)
| | - Pierre Van Damme
- Centre for the Evaluation of Vaccination, Vaccine & Infectious Disease Institute, University of Antwerp, Belgium
| | - Corinne Vandermeulen
- Leuven University Vaccinology Center, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Stéphanie Mali
- Federal Agency for Medicines and Health Products (FAMHP), Belgium.
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32
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Monteith D, Collins EC, Vandermeulen C, Van Hecken A, Raddad E, Scherer JC, Grayzel D, Schuetz TJ, de Hoon J. Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of the CGRP Binding Monoclonal Antibody LY2951742 (Galcanezumab) in Healthy Volunteers. Front Pharmacol 2017; 8:740. [PMID: 29089894 PMCID: PMC5651004 DOI: 10.3389/fphar.2017.00740] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/02/2017] [Indexed: 01/07/2023] Open
Abstract
Background: Calcitonin gene-related peptide (CGRP) is pivotal in the pathophysiology of migraine headaches and represents a promising target for migraine treatment. The humanized monoclonal antibody galcanezumab (LY2951742) binds to CGRP and may be effective in migraine prophylaxis. Objectives: The primary objective was to evaluate the safety and tolerability of single and multiple doses of galcanezumab in humans. Secondary objectives included assessing the pharmacokinetics and evaluating target engagement. Methods: A double-blind, randomized, placebo-controlled study (NCT 01337596) with single escalating and multiple subcutaneous (SC) doses of galcanezumab was performed in healthy male volunteers. Single doses of 1, 5, 25, 75, 200, and 600 mg of galcanezumab (n = 7/dose) or placebo (n = 2/dose) were injected SC in six consecutive cohorts of nine subjects each. One cohort of nine subjects received multiple (4) 150 mg doses of galcanezumab or placebo every other week. Target engagement was evaluated by measuring inhibition of capsaicin-induced increase in dermal blood flow (DBF). Findings: Sixty-three subjects were randomized and included in the safety analyses. Galcanezumab was well tolerated in single doses (1–600 mg SC) and consecutive doses (150 mg SC). There was no dose-dependent difference in type or frequency of treatment-emergent adverse events, and no clinically meaningful difference when compared with placebo. Pharmacokinetics were linear. Galcanezumab induced a robust, dose-dependent, and durable inhibition of capsaicin-induced increase in DBF, supporting the continued clinical development of galcanezumab for prophylaxis in migraine patients.
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Affiliation(s)
- David Monteith
- Eli Lilly and Company, Indianapolis, IN, United States.,Omeros Corporation, Seattle, WA, United States
| | | | - Corinne Vandermeulen
- Center for Clinical Pharmacology, University Hospitals of Leuven, KU Leuven, Leuven, Belgium
| | - Anne Van Hecken
- Center for Clinical Pharmacology, University Hospitals of Leuven, KU Leuven, Leuven, Belgium
| | - Eyas Raddad
- Eli Lilly and Company, Indianapolis, IN, United States
| | | | - David Grayzel
- Arteaus Therapeutics, LLC, Cambridge, MA, United States
| | | | - Jan de Hoon
- Center for Clinical Pharmacology, University Hospitals of Leuven, KU Leuven, Leuven, Belgium
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van Hoeve K, Vandermeulen C, Van Ranst M, Levtchenko E, van den Heuvel L, Mekahli D. Occurrence of atypical HUS associated with influenza B. Eur J Pediatr 2017; 176:449-454. [PMID: 28110418 DOI: 10.1007/s00431-017-2856-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 12/29/2016] [Accepted: 01/10/2017] [Indexed: 12/27/2022]
Abstract
UNLABELLED Hemolytic uremic syndrome (HUS) is a disease characterized by thrombotic microangiopathy with a triad of non-immune hemolytic anemia, thrombocytopenia, and renal impairment. Approximately 10% of cases of HUS are classified as atypical (aHUS). While today many genetically forms of aHUS pathology are known, only about 50% of carriers precipitate the disease. The reason remains unclear, and triggering events like intercurrent infections have been postulated. In rare cases, influenza A is the known trigger of aHUS; however, no cases of influenza B have been reported. CONCLUSION We describe for the first time that influenza B strain as a trigger for aHUS in children with primary hereditary forms. We also showed in our three cases that immunization appears to be safe; however, this needs to be confirmed in a larger cohort. What is Known: • Known triggers of aHUS are infectious specimen. • Influenza A-associated aHUS cases are rarely published. What is New: • aHUS can be triggered by influenza B virus infection. • Influenza vaccination of patients with aHUS appears safe.
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Affiliation(s)
- Karen van Hoeve
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Corinne Vandermeulen
- University Vaccinology Center, KU Leuven - University of Leuven, 3000, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, KU Leuven - Rega Institute, 3000, Leuven, Belgium
| | - Elena Levtchenko
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.,Laboratory of Pediatrics, KU Leuven - University of Leuven, 3000, Leuven, Belgium
| | | | - Djalila Mekahli
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.,Laboratory of Pediatrics, KU Leuven - University of Leuven, 3000, Leuven, Belgium
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Fraser I, Blankman J, Clapper J, Grice C, O'Neill G, Ezekowitz A, Thurston A, Geenens E, Vandermeulen C, De Hoon J. Preclinical characterization and first-in-human administration of a selective monoacylglycerol lipase
inhibitor, ABX-1431. Front Pharmacol 2017. [DOI: 10.3389/conf.fphar.2017.62.00011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Vaccines and extended vaccination programs have had an extensive impact on morbidity and mortality rates due to infectious diseases. Because of the continuous and extensive use of vaccines in industrialized countries, many infectious diseases such as poliomyelitis, diphtheria and measles have been reduced to near-extinction. However, in recent years, many countries including the United States of America, the United Kingdom and Belgium, have been confronted with a resurgence of mumps and pertussis, despite high vaccination coverage for both vaccines. In this commentary, possible causes of this resurgence will be discussed, such as the occurrence of adapted microbes, failure to vaccinate and primary and secondary vaccine failure. Additional research of the immunological mechanisms is clearly needed to support the development of possible new and more immunogenic vaccines against mumps and pertussis. Meanwhile, extensive vaccination campaigns with both vaccines remain necessary.
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Affiliation(s)
- Martine Sabbe
- a Service of Epidemiology of Infectious Diseases , Department of Public Health and Surveillance, Scientific Institute of Public Health , Brussels , Belgium
| | - Corinne Vandermeulen
- b KU Leuven - University of Leuven , Department of Pharmaceutical and Pharmacological Sciences, Leuven University Vaccinology Center (LUVAC) , Leuven , Belgium
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Gheysens O, Postnov A, Deroose CM, Vandermeulen C, de Hoon J, Declercq R, Dennie J, Mixson L, De Lepeleire I, Van Laere K, Klimas M, Chakravarthy MV. Quantification, Variability, and Reproducibility of Basal Skeletal Muscle Glucose Uptake in Healthy Humans Using 18F-FDG PET/CT. J Nucl Med 2015; 56:1520-6. [PMID: 26229142 DOI: 10.2967/jnumed.115.159715] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 07/08/2015] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED The quantification and variability of skeletal muscle glucose utilization (SMGU) in healthy subjects under basal (low insulin) conditions are poorly known. This information is essential early in clinical drug development to effectively interrogate novel pharmacologic interventions that modulate glucose uptake. The aim of this study was to determine test-retest characteristics and variability of SMGU within and between healthy subjects under basal conditions. Furthermore, different kinetic modeling strategies were evaluated to find the best-fitting model to assess SMGU studied by 18F-FDG. METHODS Six healthy male volunteers underwent 2 dynamic 18F-FDG PET/CT scans with an interval of 24 h. Subjects were admitted to the clinical unit to minimize variability in daily activities and food intake and restrict physical activity. 18F-FDG PET/CT scans of gluteal and quadriceps muscle area were obtained with arterial input. Regions of interest were drawn over the muscle area to obtain time-activity curves and standardized uptake values (SUVs) between 60 and 90 min. Spectral analysis of the data and kinetic modeling was performed using 2-tissue-irreversible (2T3K), 2-tissue-reversible, and 3-tissue-sequential-irreversible (3T5KS) models. Reproducibility was assessed by intraclass correlation coefficients (ICCs) and within-subject coefficient of variation (WSCV). RESULTS SUVs in gluteal and quadriceps areas were 0.56±0.09 and 0.64±0.07. ICCs (with 90% confidence intervals in parentheses) were 0.88 (0.64-0.96) and 0.96 (0.82-0.99), respectively, for gluteal and quadriceps muscles, and WSCV for gluteal and quadriceps muscles was 2.2% and 3.6%, respectively. The rate of glucose uptake into muscle was 0.0016±0.0004 mL/mL⋅min, with an ICC of 0.94 (0.93-0.95) and WSCV of 6.6% for the 3T5KS model, whereas an ICC of 0.98 (0.92-1.00) and WSCV of 2.8% was obtained for the 2T3K model. 3T5KS demonstrated the best fit to the measured experimental points. CONCLUSION Minimal variability in skeletal muscle glucose uptake was observed under basal conditions in healthy subjects. SUV measurements and rate of glucose uptake values were reproducible, with an average WSCV of less than 5%. Compared with SUV, the 3-tissue model adds information about kinetics between blood, intra- and intercellular compartments, and phosphorylation that may highlight the exact mechanisms of metabolic changes after pharmacologic intervention.
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Affiliation(s)
- Olivier Gheysens
- Nuclear Medicine and Molecular Imaging, University Hospitals Leuven and Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Andrey Postnov
- Nuclear Medicine and Molecular Imaging, University Hospitals Leuven and Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Christophe M Deroose
- Nuclear Medicine and Molecular Imaging, University Hospitals Leuven and Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Corinne Vandermeulen
- Center for Clinical Pharmacology, University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Jan de Hoon
- Center for Clinical Pharmacology, University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | | | - Justin Dennie
- Merck Research Laboratories, Merck & Co., Kenilworth, New Jersey
| | - Lori Mixson
- Merck Research Laboratories, Merck & Co., Kenilworth, New Jersey
| | | | - Koen Van Laere
- Nuclear Medicine and Molecular Imaging, University Hospitals Leuven and Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Michael Klimas
- Merck Research Laboratories, Merck & Co., Kenilworth, New Jersey
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Van Hoeve K, Vandermeulen C, van den Heuvel B, Levtchenko E, Van Ranst M, Mekahli D. SP899OCCURRENCE OF ATYPICAL HEMOLYTIC UREMIC SYNDROME FOLLOWING INFLUENZA B INFECTION. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv203.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Laenen J, Roelants M, Devlieger R, Vandermeulen C. Influenza and pertussis vaccination coverage in pregnant women. Vaccine 2015; 33:2125-31. [PMID: 25796339 DOI: 10.1016/j.vaccine.2015.03.020] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/25/2015] [Accepted: 03/09/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Pregnant women have an increased risk for complications and hospitalizations when infected with the influenza virus in the second or third trimester. Additionally, infants under six months of age are most vulnerable when contracting pertussis. Immunization against influenza and pertussis during pregnancy provides protection for mother and neonate against influenza and for neonates against pertussis pending protection through infant immunization. In Belgium, a gradual increase in pertussis cases over the past decade was observed. This study was undertaken to document vaccination coverage for influenza and pertussis and factors related to vaccination status in pregnant women. METHODS Two hundred and fifty pregnant women completed a questionnaire during their third trimester. Vaccination data were collected and reasons for non-vaccination were noted as well as socio-demographic data which are known to influence vaccination coverage. RESULTS A documented vaccination coverage of 42.8% for influenza and 39.2% for pertussis was observed. Taking into account doses which were not documented, but administered according to the expectant mother, coverage for influenza would increase to 62% and for pertussis to 46%. The most important reasons for non-vaccination were the absence of a recommendation by medical staff (9.6%) and delay in vaccination (8.4%). The GP was the most important vaccinator. Pregnant women with a lower education and those with a foreign origin were more vulnerable for non-vaccination. CONCLUSION Incomplete documentation is the most important barrier in determining the vaccination status of pregnant women. Immunization during pregnancy needs further integration through vaccination campaigns aimed at both health care providers and pregnant women.
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Affiliation(s)
- Jolien Laenen
- KU Leuven, University of Leuven, Department of Pharmaceutical and Pharmacological Sciences, Leuven University Vaccinology Center (LUVAC), B-3000 Leuven, Belgium.
| | - Mathieu Roelants
- KU Leuven, University of Leuven, Department of Public Health and Primary Care, Centre for Environment and Health, Youth Health Care, B-3000 Leuven, Belgium.
| | - Roland Devlieger
- KU Leuven, University of Leuven, Department of Development and Regeneration, Department of Obstetrics and Gynaecology, University Hospitals Leuven, B-3000 Leuven, Belgium.
| | - Corinne Vandermeulen
- KU Leuven, University of Leuven, Department of Pharmaceutical and Pharmacological Sciences, Leuven University Vaccinology Center (LUVAC), B-3000 Leuven, Belgium.
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Rümke H, Loch H, Hoppenbrouwers K, Vandermeulen C, Malfroot A, Helm K, Douha M, Willems P. Immunogenicity and safety of a measles–mumps–rubella–varicella vaccine following a 4-week or a 12-month interval between two doses. Vaccine 2011; 29:3842-9. [DOI: 10.1016/j.vaccine.2011.02.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 01/17/2011] [Accepted: 02/13/2011] [Indexed: 10/18/2022]
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Vandermeulen C, Verhoye L, Vaidya S, Clement F, Brown KE, Hoppenbrouwers K, Leroux-Roels G. Detection of mumps virus-specific memory B cells by transfer of peripheral blood mononuclear cells into immune-deficient mice. Immunology 2010; 131:33-9. [PMID: 20586811 DOI: 10.1111/j.1365-2567.2010.03263.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Waning immunity to mumps after one or two doses of the measles, mumps and rubella (MMR) vaccine has been described. Using a human peripheral blood lymphocyte (PBL)-severe combined immunodeficiency (SCID) mouse model, MMR vaccine recipients with undetectable and high antibody titres against mumps were compared for the presence of circulating mumps-specific memory B cells. Peripheral blood mononuclear cells (PBMC) from six donors (three subjects with undetectable and three with high antibody titres against mumps) were injected into the spleens of non-obese diabetic (NOD)-SCID mice (three mice per subject). Mice were pretreated with TMbeta1 and total body irradiation to improve engraftment. In vivo production of human antibodies against mumps was evaluated in mouse plasma on days 7, 10 and 13 with a commercial enzyme-linked immunosorbent assay (ELISA), functional reduction neutralization test. Three donors had mumps antibody titres below the detection limit (titre < 230) and three had high antibody titres (range 5700-7300). None of the mice injected with PBMC from subjects with undetectable antibody titres showed detectable human antibody titres, despite the presence of cell-mediated immunity in two of the three donors. Seven out of nine mice injected with PBMC from subjects with high antibody titres acquired detectable antibody titres for mumps in their plasma. PBMC from vaccinees without detectable serum antibodies against mumps virus were unable to induce secretion of anti-mumps antibodies in the blood of recipient mice, whereas PBMC from vaccinees with high antibody titres were able to do so. This observation suggests that the frequency of mumps-specific memory B cells is very low in vaccinees with undetectable antibody titres. These individuals may therefore be at risk of developing mumps disease upon encounter with wild-type virus.
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Leroux-Roels I, Van der Wielen M, Kafeja F, Vandermeulen C, Lazarus R, Snape MD, John T, Carre C, Nougarede N, Pepin S, Leroux-Roels G, Hoppenbrouwers K, Pollard AJ, Van Damme P. Humoral and cellular immune responses to split-virion H5N1 influenza vaccine in young and elderly adults. Vaccine 2009; 27:6918-25. [PMID: 19761837 DOI: 10.1016/j.vaccine.2009.08.110] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2009] [Revised: 08/24/2009] [Accepted: 08/31/2009] [Indexed: 02/03/2023]
Abstract
We evaluated the humoral and cellular immunogenicity of adjuvanted and non-adjuvanted H5N1 influenza vaccine in two groups of 300 adults: aged 18-60 and >60 years in a randomized, open-label, uncontrolled phase 2 trial. Participants received two injections (D0, D21) of 7.5 microg hemagglutinin without adjuvant or 30 microg with aluminum hydroxide adjuvant. Antibody responses and cytokine secretion were assessed before and after vaccination. Excluding the 6/300 non-elderly and 47/300 elderly participants with pre-existing antibodies, geometric mean titers (dil(-1)) on D42 were higher with 30 microg+Ad and were comparable between age groups. Participants with pre-existing antibodies responded strongly to the first vaccination (GMTs in the range 147-228 on D21). Vaccination increased both Th1 and Th2 T-cell responses. The predominantly Th1 profile observed before vaccination was unaffected by vaccination. H5N1 influenza vaccine is no less immunogenic in elderly adults than in younger adults and, due to a higher proportion non-naïve elderly, immunogenicity was higher in this latter group.
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Affiliation(s)
- Isabel Leroux-Roels
- Center for Vaccinology, Ghent University and Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
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Theeten H, Vandermeulen C, Roelants M, Hoppenbrouwers K, Depoorter AM, Van Damme P. Coverage of recommended vaccines in children at 7-8 years of age in Flanders, Belgium. Acta Paediatr 2009; 98:1307-12. [PMID: 19432835 DOI: 10.1111/j.1651-2227.2009.01331.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM Evaluation of the coverage of primary diphtheria-tetanus-pertussis (DTP), poliomyelitis, hepatitis B (HBV) and measles-mumps-rubella (MMR) vaccine doses recommended before the age of 18 months in 7-year-old school children in Flanders, Belgium. Meningococcal serogroup C and DT-polio vaccines offered respectively as catch-up and booster vaccinations were also evaluated. METHODS Parents of 792 children born in Flanders in 1997 and selected by cluster sampling were interviewed at home in 2005. Vaccination data since infancy were collected retrospectively from vaccination documents and school health records. RESULTS Coverage rates were 88.0% for the first dose of MMR, and 72.0%, 84.2% and 91.4% for the recommended HBV, DTP and poliomyelitis primary vaccine doses, respectively. These rates included catch-up of missed infant MMR (4.9%) and HBV (6.4%) vaccinations. In addition, 88.3% of the target group received the DT-polio booster dose recommended at 6 years of age and 83.1% a meningococcal C vaccine dose. Preventive public health services as well as private physicians were involved to a varying extent. A lower socioeconomic status of the family was associated with a higher risk of nonvaccination. CONCLUSION Vaccinators in Flanders reach children relatively well during infancy and at school age, but catch-up of missed infant vaccine doses, especially MMR, should be optimized.
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Affiliation(s)
- Heidi Theeten
- Centre for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, B-2610 Antwerp, Belgium.
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Vandermeulen C, Clement F, Roelants M, Van Damme P, Hoppenbrouwers K, Leroux-Roels G. Evaluation of cellular immunity to mumps in vaccinated individuals with or without circulating antibodies up to 16 years after their last vaccination. J Infect Dis 2009; 199:1457-60. [PMID: 19320590 DOI: 10.1086/598482] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
In this observational study, mumps-specific in vitro lymphoproliferation was measured in 24 subjects with low antibody titers and 24 subjects with high antibody titers who received their last vaccine dose up to 16 years previously. Overall, a significant lymphoproliferative response was found in 32 subjects (66.7%)-namely, in 13 (54.2%) of those with low antibody titers and 19 (79.2%) of those with high antibody titers. The mean stimulation index for subjects with low antibody titers was 4.47, whereas that for subjects with high antibody titers was 8.31 (P = .032). Mumps vaccine-induced cell-mediated immunity appears to be more persistent than the antibody response.
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Vandermeulen C, Leroux-Roels G, Hoppenbrouwers K. Mumps outbreaks in highly vaccinated populations: What makes good even better? Hum Vaccin 2009; 5:494-6. [PMID: 19279405 DOI: 10.4161/hv.7943] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Theeten H, Hens N, Aerts M, Vandermeulen C, Roelants M, Hoppenbrouwers K, Van Damme P, Beutels P. Common attitudes about concomitant vaccine injections for infants and adolescents in Flanders, Belgium. Vaccine 2009; 27:1964-9. [DOI: 10.1016/j.vaccine.2009.01.096] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 01/13/2009] [Accepted: 01/22/2009] [Indexed: 11/26/2022]
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Levie K, Leroux-Roels I, Hoppenbrouwers K, Kervyn AD, Vandermeulen C, Forgus S, Leroux-Roels G, Pichon S, Kusters I. An adjuvanted, low-dose, pandemic influenza A (H5N1) vaccine candidate is safe, immunogenic, and induces cross-reactive immune responses in healthy adults. J Infect Dis 2008; 198:642-9. [PMID: 18576945 DOI: 10.1086/590913] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND To protect a naive global population against pandemic influenza, pandemic vaccines should be effective at low antigen doses, because of limited manufacturing capacity. METHODS In a multicenter, randomized, blind-observer phase 1 trial, groups of 50 healthy young adults received 2 doses, 21 days apart, of influenza A/Vietnam/1194/2004 NIBRG-14 (H5N1) vaccine containing 1.9, 3.8, 7.5 or 15 microg of hemagglutinin with oil-in-water emulsion adjuvant or 7.5 microg of hemagglutinin without adjuvant. Safety was monitored to day 42. Homologous hemagglutination-inhibition (HI) and microneutralization titers were determined after each vaccination. Cross-reactivity against A/Indonesia/05/2005 RG2 was tested after the second vaccination. RESULTS No vaccine-related significant or serious adverse events occurred. Injection site reactions, but not systemic reactions, were more frequent with adjuvant than without. Even with only 1.9 microg of hemagglutinin plus adjuvant, 72% of subjects had HI titers >or=1:32 after 2 doses. This proportion was 81%-89% with higher adjuvanted doses but was only 34% without adjuvant. Adjuvanted vaccine induced cross-neutralizing antibodies in 39%-65% of samples, versus 7% without adjuvant. CONCLUSIONS The emulsion-adjuvanted pandemic influenza vaccine candidate was safe, immunogenic, and induced cross-reactive antibodies. This adjuvanted 1.9-microg candidate is the lowest effective dose tested to date. This could have a major impact on prepandemic vaccination strategies with stockpiled batches of vaccine. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT00457509 .
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Affiliation(s)
- Karin Levie
- Ecole de Santé Publique, Université Catholique de Louvain, Brussels.
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Vandermeulen C, Roelants M, Theeten H, Depoorter AM, Van Damme P, Hoppenbrouwers K. Vaccination coverage in 14-year-old adolescents: documentation, timeliness, and sociodemographic determinants. Pediatrics 2008; 121:e428-34. [PMID: 18310163 DOI: 10.1542/peds.2007-1415] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE The objective of this study was to measure the coverage and influencing determinants of hepatitis B virus, measles-mumps-rubella, and Meningococcus serogroup C vaccination in 14-year-old adolescents in Flanders, Belgium, in 2005. METHODS A total of 1500 adolescents who were born in 1991 and were living in Flanders were selected with a 2-stage cluster sampling technique. Home visits to copy vaccination documents and complete a questionnaire on sociodemographic and other related factors were conducted by trained interviewers. Only documented vaccination dates were accepted. Missing data were, when possible, retrieved through medical charts of the School Health System. RESULTS For 1344 (89.6%) adolescents, a home visit was performed. Vaccination coverage was 75.7% for the third dose of hepatitis B virus, 80.6% for the first dose and 83.6% for the second dose of measles-mumps-rubella, and 79.8% for Meningococcus serogroup C. Only 74.6% of the adolescents had proof of 2 measles-mumps-rubella vaccines. Although 1006 (74.8%) adolescents had vaccination data available at home at the time of the interview, only 427 (31.8%) were able to show written proof of all studied vaccines. The probably underestimated coverage rates are well below World Health Organization recommendations, but timeliness of vaccinations was respected. Univariate logistic regression showed that unemployment of the father as proxy measure of socioeconomic status was detrimental for vaccination status, in contrast to partial employment of the mother, which was a favorable factor. Previously unreported determinants of lower coverage rates inferred from this study are single divorced parents, larger families (> or = 4 children), lower adolescent educational level, enrollment in special education, and repeating a grade. CONCLUSIONS Insufficient documentation is a major barrier in this vaccination coverage study. More attention should go to those with the lowest coverage rates, such as adolescents from large families, with separated parents, and with a lower socioeconomic background.
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Affiliation(s)
- Corinne Vandermeulen
- Center for Youth Health Care, Katholieke Universiteit Leuven, Kapucijnenvoer 35, B-3000 Leuven, Belgium.
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Sokal E, Hoppenbrouwers K, Vandermeulen C, Moutschen M, Léonard P, Moreels A, Haumont M, Bollen A, Smets F, Denis M. Recombinant gp350 Vaccine for Infectious Mononucleosis: A Phase 2, Randomized, Double‐Blind, Placebo‐Controlled Trial to Evaluate the Safety, Immunogenicity, and Efficacy of an Epstein‐Barr Virus Vaccine in Healthy Young Adults. J Infect Dis 2007; 196:1749-53. [DOI: 10.1086/523813] [Citation(s) in RCA: 284] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Stojanov S, Liese JG, Belohradsky BH, Vandermeulen C, Hoppenbrouwers K, Van der Wielen M, Van Damme P, Georges B, Dupuy M, Scemama M, Watson M, Fiquet A, Stek JE, Golm GT, Schödel FP, Kuter BJ. Administration of hepatitis A vaccine at 6 and 12 months of age concomitantly with hexavalent (DTaP-IPV-PRP approximately T-HBs) combination vaccine. Vaccine 2007; 25:7549-58. [PMID: 17905486 DOI: 10.1016/j.vaccine.2007.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Revised: 08/10/2007] [Accepted: 08/15/2007] [Indexed: 11/24/2022]
Abstract
BACKGROUND Administration of two doses of hepatitis A (HA) vaccine to children > or = 2 years of age has been shown to be protective. The present study assessed whether HA vaccine can be administered as early as 6 months of age and whether it can be administered concomitantly with a hexavalent (HV) vaccine at this age. METHODS In an open label, randomized, parallel group study, the liquid HV vaccine (HEXAVAC) (diphtheria, tetanus, 2-component acellular pertussis, inactivated poliomyelitis vaccine, Haemophilus influenzae type b conjugated to tetanus protein and hepatitis B) was administered at 2, 4, 6, and 12 months of age to all children. HA vaccine (VAQTA) was given at 7 and 13 months in the separate administration group (Group 1) and at 6 and 12 months in the concomitant administration group (Group 2). Serum samples were obtained at 2, 7, 12, and 14 months in Group 1 and at 2, 7, 12, and 13 months in Group 2. The primary immunogenicity outcomes were the seroconversion rates for HA 1 month after the second dose of HA vaccine in initially seronegative subjects, and the seroconversion rates for each HV antigen 1 month after the third dose of the HV vaccine (both at 7 months of age). RESULTS HA seropositivity rates 1 month after the second dose were 100% in both groups, regardless of initial serostatus. The responses to each HV antigen 1 month after the third dose were similar in both groups. The vaccines were generally well tolerated in both groups regardless of vaccine(s) administered. CONCLUSIONS A schedule of two doses of HA vaccine, 6 months apart beginning at 6 months of age is highly immunogenic and well tolerated when administered alone or concomitantly with HV vaccine at 6 and 12 months of age.
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Affiliation(s)
- S Stojanov
- University Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
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Vandermeulen C, Mathieu R, Geert LR, Pierre VD, Karel H. Long-term persistence of antibodies after one or two doses of MMR-vaccine. Vaccine 2007; 25:6672-6. [PMID: 17692439 DOI: 10.1016/j.vaccine.2007.07.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 07/09/2007] [Accepted: 07/10/2007] [Indexed: 11/23/2022]
Abstract
Outbreaks of measles, mumps and rubella have occurred recently despite long-standing mass immunization with MMR. Antibody titres for measles, mumps and rubella of 160 students (17-23 years) with proof of at least one MMR-vaccine were studied according to the number of MMR-vaccines received. The proportion of subjects with positive antibody titres was significantly higher in those who received two vaccines against measles (77.1% versus 58.7%, p=0.05), mumps (67.5% versus 55.6%, p=0.009) and rubella (99.2% versus 71.4%, p=0.008). Comparable significant trends were seen for GMTs for measles and mumps. A similar non-significant trend was noted for rubella.
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Affiliation(s)
- Corinne Vandermeulen
- Department of Youth Health Care, K.U. Leuven, Kapucijnenvoer 35, Block D, Box 7001, 3000 Leuven, Belgium.
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