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Fallucca A, Priano W, Carubia A, Ferro P, Pisciotta V, Casuccio A, Restivo V. Effectiveness of Catch-Up Vaccination Interventions Versus Standard or Usual Care Procedures in Increasing Adherence to Recommended Vaccinations Among Different Age Groups: Systematic Review and Meta-Analysis of Randomized Controlled Trials and Before-After Studies. JMIR Public Health Surveill 2024; 10:e52926. [PMID: 39042433 PMCID: PMC11303899 DOI: 10.2196/52926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 04/16/2024] [Accepted: 04/30/2024] [Indexed: 07/24/2024] Open
Abstract
BACKGROUND To address the global challenge of vaccine hesitancy, the Strategic Advisory Group of Experts on Immunization strongly promotes vaccination reminder and recall interventions. Coupled with the new opportunities presented by scientific advancements, these measures are crucial for successfully immunizing target population groups. OBJECTIVE This systematic review and meta-analysis aims to assess the effectiveness of various interventions in increasing vaccination coverage compared with standard or usual care. The review will cover all vaccinations recommended for different age groups. METHODS In February 2022, 2 databases were consulted, retrieving 1850 studies. Following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, 79 manuscripts were included after the assessment phase. These comprised 46 trials/randomized controlled trials (RCTs) and 33 before-after studies. A meta-analysis using a random-effects model was performed with STATA software (version 14.1.2). The selected outcome was the risk ratio (RR) of vaccination coverage improvement effectiveness. Additionally, meta-regression analyses were conducted for the included manuscripts. RESULTS The analyses showed an overall efficacy of RR 1.22 (95% CI 1.19-1.26) for RCTs and RR 1.70 (95% CI 1.54-1.87) for before-after studies when considering all interventions cumulatively. Subgroup analyses identified multicomponent interventions (RR 1.58, 95% CI 1.36-1.85) and recall clinical interventions (RR 1.24, 95% CI 1.17-1.32) as the most effective in increasing vaccination coverage for RCTs. By contrast, educational interventions (RR 2.13, 95% CI 1.60-2.83) and multicomponent interventions (RR 1.61, 95% CI 1.43-1.82) achieved the highest increases for before-after studies. Meta-regression analyses indicated that the middle-aged adult population was associated with a higher increase in vaccination coverage (RCT: coefficient 0.54, 95% CI 0.12-0.95; before-after: coefficient 1.27, 95% CI 0.70-1.84). CONCLUSIONS Community, family, and health care-based multidimensional interventions, as well as education-based catch-up strategies, effectively improve vaccination coverage. Therefore, their systematic implementation is highly relevant for targeting undervaccinated population groups. This approach aligns with national vaccination schedules and aims to eliminate or eradicate vaccine-preventable diseases.
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Affiliation(s)
- Alessandra Fallucca
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
| | - Walter Priano
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
| | - Alessandro Carubia
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
| | - Patrizia Ferro
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
| | - Vincenzo Pisciotta
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
| | - Alessandra Casuccio
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialities, University of Palermo, Palermo, Italy
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Ilesanmi MM, Abonyi S, Pahwa P, Gerdts V, Scwandt M, Neudorf C. Trends, barriers and enablers to measles immunisation coverage in Saskatchewan, Canada: A mixed methods study. PLoS One 2022; 17:e0277876. [PMID: 36417461 PMCID: PMC9683619 DOI: 10.1371/journal.pone.0277876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 11/04/2022] [Indexed: 11/25/2022] Open
Abstract
Many social, cultural, and systemic challenges affect the uptake of measles immunisation services. Prior studies have looked at the caregivers' perspectives, but little is known about the perspectives of the health care providers on the barriers of measles immunisation services in Canada. This study examined measles immunisation coverage trends across the regional health authorities in Saskatchewan and explored the barriers and enablers to measles immunisation coverage from providers' perspectives. The study adopted an explanatory sequential mixed method. We utilized the entire population of 16,582 children under two years of age available in the Saskatchewan Immunisation Management System (SIMS) registry for 2002 and 2013 in aggregate format and interviewed 18 key informants in pre-determined two-stages in 2016 and 2017. The quantitative analysis was done with Joinpoint regression modelling, while the qualitative interview data was analyzed using hybrid inductive and deductive thematic approaches. There was a 16.89%-point increase in measles immunisation coverage in the province from 56.32% to 73.21% between 2002 and 2013. There was also a persistently higher coverage among the affluent (66.95% - 82.37%) than the most deprived individuals (45.79% - 62.60%) in the study period. The annual rate of coverage change was marginally higher among the most deprived (16.81%; and average annual percentage change (AAPC) 2.0, 95% CI 1.7-2.2) than among the affluent group (15.42% and AAPC 3.0; 95% CI 2.0-4.0). While access-related issues, caregivers' fears, hesitancy, anti-vaccination challenges, and resource limitations were barriers to immunisation, improving community engagement, service delivery flexibility, targeted social responses and increasing media role were found useful to address the uptake of measles and other vaccine-preventable diseases immunisation. There is low coverage and inequity in measles immunisation uptake in Saskatchewan from social and institutional barriers. Even though there is evidence of disparity reduction among the different groups, the barriers to increasing measles immunisation coverage have implications for the health of the socio-economically deprived groups, the healthcare system and other vaccination programs. There is a need to improve policy framework for community engagement, targeted programs, and public health discourse.
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Affiliation(s)
- Marcus M. Ilesanmi
- Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- * E-mail:
| | - Sylvia Abonyi
- Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- Saskatchewan Population Health and Evaluation Research Unit (SPHERU), University of Saskatchewan, Saskatoon, SK, Canada
| | - Punam Pahwa
- Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK, Canada
| | - Volker Gerdts
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, SK, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Michael Scwandt
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
- Vancouver Coastal Health, Office of the Chief Medical Health Officer, Vancouver, BC, Canada
| | - Cordell Neudorf
- Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- Health Surveillance & Reporting, Saskatchewan Health Authority (SHA), Saskatoon, SK, Canada
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Dhungana M, Hoben M, O’Brien C, MacDonald SE. Immunization status of children at kindergarten entry in Alberta, Canada. CANADIAN JOURNAL OF PUBLIC HEALTH = REVUE CANADIENNE DE SANTE PUBLIQUE 2022; 114:82-92. [PMID: 35864307 PMCID: PMC9849539 DOI: 10.17269/s41997-022-00663-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 06/14/2022] [Indexed: 01/22/2023]
Abstract
OBJECTIVES Little is known about immunization coverage among kindergarten-aged children in jurisdictions that do not require children's immunization records to be provided at school entry. Thus, we assessed immunization coverage and associated characteristics of a 2008 birth cohort of Alberta children at kindergarten entry as compared with at the end of grade one. METHODS This retrospective cohort study used population-based administrative health data for childhood vaccines in Alberta, Canada. We categorized and compared immunization status of children as follows: (a) complete at kindergarten entry; (b) incomplete at kindergarten entry but complete at the end of grade one; and (c) still incomplete at the end of grade one. To assess factors associated with immunization status, we used multinomial logistic regression. RESULTS Immunization coverage for the complete vaccine series for children (N = 41,515) at kindergarten entry was suboptimal (44.5%, 95% CI 44.0-45.0) and substantially lower than for children at the end of grade one (74.8%, 95% CI 74.3-75.2). Young maternal age, not living with a partner, and having > 1 child in a household were associated with incomplete immunization status at kindergarten entry. Midwife-assisted hospital and home delivery was strongly associated with incomplete immunization status at the end of grade one. CONCLUSION Immunization coverage at kindergarten entry was strikingly low. Risk factors for incomplete immunization status were identified that require particular attention when addressing immunization coverage. The school-based catch-up immunization program in grade one seems to have substantially improved coverage among children, suggesting a potential benefit of shifting the catch-up program from grade one to kindergarten entry.
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Affiliation(s)
- Manisha Dhungana
- Faculty of Nursing, Edmonton Clinic Health Academy, University of Alberta, 11405-87 Ave NW, Edmonton, Alberta T6G 1C9 Canada
| | - Matthias Hoben
- Faculty of Nursing, Edmonton Clinic Health Academy, University of Alberta, 11405-87 Ave NW, Edmonton, Alberta T6G 1C9 Canada
| | - Celine O’Brien
- Immunization & Communicable Disease Control, Alberta Health, Edmonton, Alberta Canada
| | - Shannon E. MacDonald
- Faculty of Nursing, Edmonton Clinic Health Academy, University of Alberta, 11405-87 Ave NW, Edmonton, Alberta T6G 1C9 Canada
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Bandara T, Neudorf C, Muhajarine N. An equity-based assessment of immunization-related responses in urban Alberta during the 2014 measles outbreak: a comparative analysis between Calgary and Edmonton. CANADIAN JOURNAL OF PUBLIC HEALTH = REVUE CANADIENNE DE SANTE PUBLIQUE 2022; 113:422-432. [PMID: 35025101 PMCID: PMC9043142 DOI: 10.17269/s41997-021-00578-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 09/20/2021] [Indexed: 01/16/2023]
Abstract
OBJECTIVES This study investigates measles, mumps, and rubella (MMR) immunization rates during the measles outbreak in Calgary and Edmonton of 2014 stratified by four area-level socio-demographic indicators. This study also leverages this epidemiological data to assess the equity aspect of emergency measures instituted regarding immunization in those two cities. METHODS A mixed-methods comparative case study analysis methodology was employed to assess the neighbourhood-level immunization statuses before (2013), during (2014), and after (2015) an active measles outbreak in Calgary and Edmonton, Alberta, Canada. The epidemiological one-dose by age-2 MMR coverage data were stratified using four socio-demographic indicators: median household income, %-homeownership, %-Aboriginal population, and %-immigrant population. Document and content analysis was utilized to investigate the outbreak mitigation strategies deployed in each city. RESULTS The measles outbreak of 2013/2014 involved the entirety of Alberta and led to both provincial and city-specific interventions in which Calgary deployed three mass immunization clinics in 2014, where Edmonton did not. The Calgary coverage data showed an increase in coverage inequalities across all indicators and the Edmonton data showed mixed results in terms of equity gains/losses. Calgary's additive intervention of three mass immunization clinics in 2014 appears to have contributed to both the higher gross immunization rates in Calgary (90.77%) and an inequitable increase in coverage rates as compared with Edmonton (88.96%), in most cases. CONCLUSION Public health policy-makers must be cognizant that large-scale public health efforts must be optimized for accessibility across all socio-economic levels to ensure public and population health gains are realized equitably.
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Affiliation(s)
- Thilina Bandara
- Community Health and Epidemiology, University of Saskatchewan, Saskatoon, SK Canada
| | - Cory Neudorf
- Community Health and Epidemiology, University of Saskatchewan, Saskatoon, SK Canada
| | - Nazeem Muhajarine
- Community Health and Epidemiology, University of Saskatchewan, Saskatoon, SK Canada
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Ozawa S, Yemeke TT, Evans DR, Pallas SE, Wallace AS, Lee BY. Defining hard-to-reach populations for vaccination. Vaccine 2019; 37:5525-5534. [PMID: 31400910 PMCID: PMC10414189 DOI: 10.1016/j.vaccine.2019.06.081] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/29/2022]
Abstract
Extending the benefits of vaccination to everyone who is eligible requires an understanding of which populations current vaccination efforts have struggled to reach. A clear definition of "hard-to-reach" populations - also known as high-risk or marginalized populations, or reaching the last mile - is essential for estimating the size of target groups, sharing lessons learned based on consistent definitions, and allocating resources appropriately. A literature review was conducted to determine what formal definitions of hard-to-reach populations exist and how they are being used, and to propose definitions to consider for future use. Overall, we found that (1) there is a need to distinguish populations that are hard to reach versus hard to vaccinate, and (2) the existing literature poorly defined these populations and clear criteria or thresholds for classifying them were missing. Based on this review, we propose that hard-to-reach populations be defined as those facing supply-side barriers to vaccination due to geography by distance or terrain, transient or nomadic movement, healthcare provider discrimination, lack of healthcare provider recommendations, inadequate vaccination systems, war and conflict, home births or other home-bound mobility limitations, or legal restrictions. Although multiple mechanisms may apply to the same population, supply-side barriers should be distinguished from demand-side barriers. Hard-to-vaccinate populations are defined as those who are reachable but difficult to vaccinate due to distrust, religious beliefs, lack of awareness of vaccine benefits and recommendations, poverty or low socioeconomic status, lack of time to access available vaccination services, or gender-based discrimination. Further work is needed to better define hard-to-reach populations and delineate them from populations that may be hard to vaccinate due to complex refusal reasons, improve measurement of the size and importance of their impact, and examine interventions related to overcoming barriers for each mechanism. This will enable policy makers, governments, donors, and the vaccine community to better plan interventions and allocate necessary resources to remove existing barriers to vaccination.
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Affiliation(s)
- Sachiko Ozawa
- Division of Practice Advancement and Clinical Education, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA; Department of Maternal and Child Health, UNC Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
| | - Tatenda T Yemeke
- Division of Practice Advancement and Clinical Education, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | | | - Sarah E Pallas
- Global Immunization Division, U.S. Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Aaron S Wallace
- Global Immunization Division, U.S. Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Bruce Y Lee
- Public Health Computational and Operations Research (PHICOR), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Global Obesity Prevention Center (GOPC), Johns Hopkins University, Baltimore, MD, USA
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Crocker-Buque T, Edelstein M, Mounier-Jack S. Interventions to reduce inequalities in vaccine uptake in children and adolescents aged <19 years: a systematic review. J Epidemiol Community Health 2017; 71:87-97. [PMID: 27535769 PMCID: PMC5256276 DOI: 10.1136/jech-2016-207572] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/13/2016] [Accepted: 07/04/2016] [Indexed: 11/03/2022]
Abstract
BACKGROUND In high-income countries, substantial differences exist in vaccine uptake relating to socioeconomic status, gender, ethnic group, geographic location and religious belief. This paper updates a 2009 systematic review on effective interventions to decrease vaccine uptake inequalities in light of new technologies applied to vaccination and new vaccine programmes (eg, human papillomavirus in adolescents). METHODS We searched MEDLINE, Embase, ASSIA, The Campbell Collaboration, CINAHL, The Cochrane Database of Systematic Reviews, Eppi Centre, Eric and PsychINFO for intervention, cohort or ecological studies conducted at primary/community care level in children and young people from birth to 19 years in OECD countries, with vaccine uptake or coverage as outcomes, published between 2008 and 2015. RESULTS The 41 included studies evaluated complex multicomponent interventions (n=16), reminder/recall systems (n=18), outreach programmes (n=3) or computer-based interventions (n=2). Complex, locally designed interventions demonstrated the best evidence for effectiveness in reducing inequalities in deprived, urban, ethnically diverse communities. There is some evidence that postal and telephone reminders are effective, however, evidence remains mixed for text-message reminders, although these may be more effective in adolescents. Interventions that escalated in intensity appeared particularly effective. Computer-based interventions were not effective. Few studies targeted an inequality specifically, although several reported differential effects by the ethnic group. CONCLUSIONS Locally designed, multicomponent interventions should be used in urban, ethnically diverse, deprived populations. Some evidence is emerging for text-message reminders, particularly in adolescents. Further research should be conducted in the UK and Europe with a focus on reducing specific inequalities.
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Affiliation(s)
- Tim Crocker-Buque
- Health Protection Research Unit in Immunisation, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Michael Edelstein
- Department of Immunisation, Hepatitis and Blood Safety, Public Health England, London, UK
| | - Sandra Mounier-Jack
- Health Protection Research Unit in Immunisation, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
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Brown VB, Oluwatosin OA, Akinyemi JO, Adeyemo AA. Effects of Community Health Nurse-Led Intervention on Childhood Routine Immunization Completion in Primary Health Care Centers in Ibadan, Nigeria. J Community Health 2015; 41:265-73. [DOI: 10.1007/s10900-015-0092-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bell CA, Simmonds KA, MacDonald SE. Exploring the heterogeneity among partially vaccinated children in a population-based cohort. Vaccine 2015; 33:4572-8. [DOI: 10.1016/j.vaccine.2015.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 11/16/2022]
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Fuller D. Focus on methods key for advancing population health intervention research. CANADIAN JOURNAL OF PUBLIC HEALTH = REVUE CANADIENNE DE SANTE PUBLIQUE 2013; 104:e93. [PMID: 23618126 PMCID: PMC6973741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 02/11/2013] [Accepted: 01/25/2013] [Indexed: 11/14/2023]
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Fuller D. Focus on methods key for advancing population health intervention research. CANADIAN JOURNAL OF PUBLIC HEALTH = REVUE CANADIENNE DE SANTE PUBLIQUE 2013; 104:e93. [PMID: 23618126 PMCID: PMC6973741 DOI: 10.1007/bf03405664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 02/11/2013] [Accepted: 01/25/2013] [Indexed: 06/02/2023]
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