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Ko M, Frivold C, Mvundura M, Soble A, Gregory C, Christiansen H, Hasso-Agopsowicz M, Fu H, Jit M, Hsu S, Mistilis JJ, Scarna T, Earle K, Menozzi-Arnaud M, Giersing B, Jarrahian C, Yakubu A, Malvolti S, Amorij JP. An Application of an Initial Full Value of Vaccine Assessment Methodology to Measles-Rubella MAPs for Use in Low- and Middle-Income Countries. Vaccines (Basel) 2024; 12:1075. [PMID: 39340105 PMCID: PMC11435702 DOI: 10.3390/vaccines12091075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Revised: 09/06/2024] [Accepted: 09/10/2024] [Indexed: 09/30/2024] Open
Abstract
Measles and rubella micro-array patches (MR-MAPs) are a promising innovation to address limitations of the current needle and syringe (N&S) presentation due to their single-dose presentation, ease of use, and improved thermostability. To direct and accelerate further research and interventions, an initial full value vaccine assessment (iFVVA) was initiated prior to MR-MAPs entering phase I trials to quantify their value and identify key data gaps and challenges. The iFVVA utilized a mixed-methods approach with rapid assessment of literature, stakeholder interviews and surveys, and quantitative data analyses to (i) assess global need for improved MR vaccines and how MR-MAPs could address MR problem statements; (ii) estimate costs and benefits of MR-MAPs; (iii) identify the best pathway from development to delivery; and (iv) identify outstanding areas of need where stakeholder intervention can be helpful. These analyses found that if MR-MAPs are broadly deployed, they can potentially reach an additional 80 million children compared to the N&S presentation between 2030-2040. MR-MAPs can avert up to 37 million measles cases, 400,000 measles deaths, and 26 million disability-adjusted life years (DALYs). MR-MAPs with the most optimal product characteristics of low price, controlled temperature chain (CTC) properties, and small cold chain volumes were shown to be cost saving for routine immunization (RI) in low- and middle-income countries (LMICs) compared to N&S. Uncertainties about price and future vaccine coverage impact the potential cost-effectiveness of introducing MR-MAPs in LMICs, indicating that it could be cost-effective in 16-81% of LMICs. Furthermore, this iFVVA highlighted the importance of upfront donor investment in manufacturing set-up and clinical studies and the critical influence of an appropriate price to ensure country and manufacturer financial sustainability. To ensure that MR-MAPs achieve the greatest public health benefit, MAP developers, vaccine manufacturers, donors, financiers, and policy- and decision-makers will need close collaboration and open communications.
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Affiliation(s)
- Melissa Ko
- MMGH Consulting GmbH, 1211 Geneva, Switzerland
| | | | | | - Adam Soble
- MMGH Consulting GmbH, 1211 Geneva, Switzerland
| | | | | | | | - Han Fu
- London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
| | - Mark Jit
- London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
- School of Public Health, The University of Hong Kong, Hong Kong SAR 999077, China
| | | | | | | | - Kristen Earle
- The Bill and Melinda Gates Foundation, Seattle, WA 98121, USA
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2
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Higgins DM, O’Leary ST. A World without Measles and Rubella: Addressing the Challenge of Vaccine Hesitancy. Vaccines (Basel) 2024; 12:694. [PMID: 38932423 PMCID: PMC11209163 DOI: 10.3390/vaccines12060694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
The worldwide elimination of measles and rubella is feasible, but not without overcoming the substantial challenge of vaccine hesitancy. This challenge is complicated by the spread of misinformation and disinformation fueled by rapidly progressing technologies and evolving forms of online communication. The recent COVID-19 pandemic has only added further complexity to this challenge. However, considerable progress has been made in understanding the scope of the problem and the complex factors that influence vaccine hesitancy. Our understanding of evidence-based strategies for addressing vaccine hesitancy has grown significantly, including evidence for effective communication and behavioral interventions. In this article, we review measles and rubella vaccines and vaccine hesitancy. We then provide an overview of evidence-based strategies for addressing vaccine hesitancy, including communication strategies and behavioral interventions. This article is relevant to healthcare professionals, health system leaders, public health professionals, policymakers, community leaders, and any individuals who have a role in addressing vaccine hesitancy in their communities. Finally, we review future directions and major areas of research need.
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Affiliation(s)
| | - Sean T. O’Leary
- Adult and Child Center for Outcomes Research and Delivery Science (ACCORDS), Children’s Hospital Colorado, University of Colorado School of Medicine, Aurora, CO 80045, USA;
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3
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Hausdorff WP, Madhi SA, Kang G, Kaboré L, Tufet Bayona M, Giersing BK. Facilitating the development of urgently required combination vaccines. Lancet Glob Health 2024; 12:e1059-e1067. [PMID: 38636529 PMCID: PMC11099297 DOI: 10.1016/s2214-109x(24)00092-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/25/2024] [Accepted: 02/22/2024] [Indexed: 04/20/2024]
Abstract
The essence of a vaccine lies in its ability to elicit a set of immune responses specifically directed at a particular pathogen. Accordingly, vaccines were historically designed, developed, registered, recommended, procured, and administered as monopathogen formulations. Nonetheless, the control and elimination of an astonishing number of diseases was realised only after several once-separate vaccines were provided as combinations. Unfortunately, the current superabundance of recommended and pipeline vaccines is now at odds with the number of acceptable vaccine administrations and feasible health-care visits for vaccine recipients and health-care providers. Yet, few new combinations are in development because, in addition to the scientific and manufacturing hurdles intrinsic to coformulation, developers face a gauntlet of regulatory, policy, and commercialisation obstacles in a milieu still largely designed for monopathogen vaccines. We argue here that national policy makers and public health agencies should prospectively identify and advocate for the development of new multipathogen combination vaccines, and suggest ways to accelerate the regulatory pathways to licensure of combinations and other concrete, innovative steps to mitigate current obstacles.
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Affiliation(s)
- William P Hausdorff
- Center for Vaccine Innovation and Access, PATH, Washington, DC, USA; Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium.
| | - Shabir A Madhi
- South African Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Lassané Kaboré
- PATH, Center for Vaccine Innovation and Access, Dakar, Senegal; Gavi, The Vaccine Alliance, Geneva, Switzerland
| | | | - Birgitte K Giersing
- WHO Department of Immunization, Vaccines and Biologicals, Geneva, Switzerland
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4
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Odero CO, Othero D, Were VO, Ouma C. The influence of demographic and socio-economic factors on non-vaccination, under-vaccination and missed opportunities for vaccination amongst children 0-23 months in Kenya for the period 2003-2014. PLOS GLOBAL PUBLIC HEALTH 2024; 4:e0003048. [PMID: 38814892 PMCID: PMC11139289 DOI: 10.1371/journal.pgph.0003048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/08/2024] [Indexed: 06/01/2024]
Abstract
Vaccination is crucial in reducing child mortality and the prevalence of Vaccine-Preventable-Diseases (VPD), especially in low-and-middle-income countries like Kenya. However, non-vaccination, under-vaccination, and missed opportunities for vaccination (MOV) pose significant challenges to these efforts. This study aimed to analyze the impact of demographic and socio-economic factors on non-vaccination, under-vaccination, and MOV among children aged 0-23 months in Kenya from 2003 to 2014. A secondary data analysis of data from the Kenya Demographic Health Surveys (KDHS) conducted during this period was conducted, with a total of 11,997 participants, using a two-stage, multi-stage, and stratified sampling technique. The study examined factors such as child's sex, residence, mother's age, marital status, religion, birth order, maternal education, wealth quintile, province, child's birth order, parity, number of children in the household, place of delivery, and mother's occupation. Binary logistic regression was employed to identify the determinants of non-vaccination, under-vaccination, and MOV, and multivariable logistic regression analysis to report odds ratios (OR) and their corresponding 95% confidence intervals (CI). In 2003, the likelihood of non-vaccination decreased with higher maternal education levels: mothers who did not complete primary education (AOR = 0.55, 95% CI = 0.37-0.81), completed primary education (AOR = 0.34, 95% CI = 0.21-0.56), and had secondary education or higher (AOR = 0.26, 95% CI = 0.14-0.50) exhibited decreasing probabilities. In 2008/09, divorced/separated/widowed mothers (AOR = 0.22, 95% CI = 0.07-0.65) and those with no religion (AOR = 0.37, 95% CI = 0.17-0.81) showed lower odds of non-vaccination, while lower wealth quintiles were associated with higher odds. In 2014, non-vaccination was higher among younger mothers aged 15-19 years (AOR = 12.53, 95% CI = 1.59-98.73), in North Eastern Province (AOR = 7.15, 95% CI = 2.02-25.30), in families with more than 5 children (AOR = 4.19, 95% CI = 1.09-16.18), and in children born at home (AOR = 4.47, 95% CI = 1.32-15.17). Similar patterns were observed for under-vaccination and MOV. This information can inform strategies for bridging the gaps in immunization coverage and promoting equitable vaccination practices in Kenya.
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Affiliation(s)
| | - Doreen Othero
- Department of Public Health, Maseno University, Kisumu, Kenya
| | - Vincent Omondi Were
- KEMRI Wellcome-Trust Research Program, Health Economics Research Unit, Nairobi, Kenya
| | - Collins Ouma
- Department of Biomedical Sciences and Technology, Maseno University, Kisumu, Kenya
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5
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Wallace AS, Ryman TK, Privor-Dumm L, Morgan C, Fields R, Garcia C, Sodha SV, Lindstrand A, Nic Lochlainn LM. Leaving no one behind: Defining and implementing an integrated life course approach to vaccination across the next decade as part of the immunization Agenda 2030. Vaccine 2024; 42 Suppl 1:S54-S63. [PMID: 36503859 PMCID: PMC10414185 DOI: 10.1016/j.vaccine.2022.11.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 10/12/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022]
Abstract
Strategic Priority 4 (SP4) of the Immunization Agenda 2030 aims to ensure that all people benefit from recommended immunizations throughout the life-course, integrated with essential health services. Therefore, it is necessary for immunization programs to have coordination and collaboration across all health programs. Although there has been progress, immunization platforms in the second year of life and beyond need continued strengthening, including booster doses and catch-up vaccination, for all ages, and recommended vaccines for older age groups. We note gaps in current vaccination programs policies and achieved coverage, in the second year of life and beyond. In 2021, the second dose of measles-containing vaccine (MCV2), given in the second year of life, achieved 71% global coverage vs 81% for MCV1. For adolescents, 60% of all countries have adopted human papillomavirus vaccines in their vaccination schedule with a global coverage rate of only 12 percent in 2021. Approximately 65% of the countries recommend influenza vaccines for older adults, high-risk adults and pregnant women, and only 25% recommended pneumococcal vaccines for older adults. To achieve an integrated life course approach to vaccination, we reviewed the evidence, gaps, and strategies in four focus areas: generating evidence for disease burden and potential vaccine impact in older age groups; building awareness and shifting policy beyond early childhood; building integrated delivery approaches throughout the life course; and identifying missed opportunities for vaccination, implementing catch-up strategies, and monitoring vaccination throughout the life course. We identified needs, such as tailoring strategies to the local context, conducting research and advocacy to mobilize resources and build political will. Mustering sufficient financial support and demand for an integrated life course approach to vaccination, particularly in times of COVID-19, is both a challenge and an opportunity.
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Affiliation(s)
- A S Wallace
- Centers for Disease Control and Prevention, Atlanta, GA, United States.
| | - T K Ryman
- Bill and Melinda Gates Foundation, Seattle, WA, United States
| | - L Privor-Dumm
- Johns Hopkins Bloomberg School of Public Health, International Vaccine Access Center, Baltimore, MD, United States
| | - C Morgan
- Jhpiego, the Johns Hopkins University affiliate, Baltimore, MD, United States
| | - R Fields
- John Snow Inc., Arlington, VA, United States
| | - C Garcia
- Johns Hopkins Bloomberg School of Public Health, International Vaccine Access Center, Baltimore, MD, United States
| | - S V Sodha
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - A Lindstrand
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - L M Nic Lochlainn
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
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6
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Odero CO, Othero D, Were VO, Ouma C. Trends of non-vaccination, under-vaccination and missed opportunities for vaccination (2003-2014) amongst children 0-23 months in Kenya. PLOS GLOBAL PUBLIC HEALTH 2024; 4:e0002906. [PMID: 38319922 PMCID: PMC10846728 DOI: 10.1371/journal.pgph.0002906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 01/20/2024] [Indexed: 02/08/2024]
Abstract
Vaccines are effective and cost-effective. Non-vaccination, under-vaccination, and missed opportunities for vaccination (MOV), have contributed to incomplete vaccination coverage in Kenya. Analyzing their trends is essential for targeting interventions and improvement strategies. This study aimed to assess trends of non-vaccination, under-vaccination, and MOV among children aged 0-23 months in Kenya using data obtained from the Kenya Demographic and Health Surveys (KDHS) conducted in 2003, 2008/09, and 2014. A two-stage, multi-stage, and stratified sampling technique was used. Weighted analysis was conducted to ensure generalizability to the full population. Using the KDHS sample size estimation process, the sample size was estimated for each indicator, with varying standard error estimates, level of coverage and estimated response rates. Final sample size was 2380 (2003), 2237 (2008/09) and 7380 (2014). To determine the level of non-vaccination, under-vaccination and MOV among children aged 0-23 months, a weighted descriptive analysis was used to estimate their prevalence, with 95% confidence intervals (CI) for each year. MOV was defined using an algorithm as a binary variable. Data coding and recoding were done using Stata (version 14; College Station, TX: StataCorp LP). Trends in proportions of non-vaccination, under-vaccination and MOV were compared between 2003, 2008/09, and 2014 using the Cochrane-Armitage trend test. All results with P≤0.05 were considered statistically significant. Trends in proportion of non-vaccination among children aged 0-23 months in Kenya was 13.2%, 6.1% and 3.2% in 2003, 2008/09 and 2014, respectively (P = 0.0001). Trends in proportion of under-vaccination among children aged 0-23 months in Kenya was 54.3%, 50% and 51.3% in 2003, 2008/09 and 2014, respectively (P = 0.0109). The trends in proportion of children who experienced MOV was 22.7% in 2003, 31.9% in 2008/09 and 37.6% in 2014 (P = 0.0001). In the study duration, non-vaccination decreased by 10%, under-vaccination remained relatively stable, and MOV increased by ~15%. There is need for the Government and partners to implement initiatives that improve vaccine access and coverage, particularly in regions with low coverage rates, and to address missed opportunities for vaccination.
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Affiliation(s)
| | - Doreen Othero
- Department of Public Health, Maseno University, Kisumu, Kenya
| | - Vincent Omondi Were
- KEMRI Wellcome-Trust Research Program, Health Economics Research Unit, Kilifi, Kenya
| | - Collins Ouma
- Department of Biomedical Sciences and Technology, Maseno University, Kisumu, Kenya
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7
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Nnaji CA, Wiysonge CS, Cooper S, Mayeye A, Luphondo L, Mabuya T, Kalui N, Lesosky M, Ndwandwe D. Contextualising missed opportunities for children's vaccination: A theory-informed qualitative study in primary care settings in Cape Town, South Africa. Hum Vaccin Immunother 2023; 19:2162771. [PMID: 36601915 PMCID: PMC9980502 DOI: 10.1080/21645515.2022.2162771] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
This study aimed to explore the contextual factors that may be associated with missed opportunities for vaccination (MOV) from the perspectives of healthcare providers and caregivers attending primary healthcare facilities in the Cape Town Metro Health District, South Africa. The ultimate goal of the assessment was to help inform the design and implementation of a contextually appropriate quality improvement programme targeted at reducing MOV in primary healthcare settings. We used a theory-informed exploratory qualitative research design involving focus group discussions with caregivers of children aged 0-23 months; and in-depth interviews of facility staff. A thematic template analysis approach, integrating the theoretical domains framework (TDF) and the capability, opportunity and motivation model of behavior (COM-B) was used to code and analyze the data. Three focus group sessions were conducted, each consisting of 5-8 caregivers and five in-depth interviews involving facility staff. Capability factors comprised caregivers' knowledge, attitude and behavior toward children's immunization. Opportunity factors included the organization of immunization services, long waiting time, vaccine stock out, staff shortage and health workers' attitude, knowledge and capability to assess children's immunization status and needs. Motivation factors included optimism and beliefs about immunization, fear of vaccine-preventable diseases and immunization safety concerns. This study identified important caregiver-, provider- and health system-related factors, which influence immunization outcomes; offering useful contextual insights for informing quality improvement strategies for reducing MOV at primary healthcare level.
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Affiliation(s)
- Chukwudi A. Nnaji
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa,Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa,CONTACT Chukwudi A. Nnaji, Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, 1 Anzio Road, Observatory, Cape Town 7925, South Africa
| | - Charles S. Wiysonge
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa,Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa,Division of Epidemiology and Biostatistics, Department of Global Health, Stellenbosch University, Cape Town, South Africa,HIV and other Infectious Diseases Research Unit, South African Medical Research Council, Durban, South Africa
| | - Sara Cooper
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa,Division of Epidemiology and Biostatistics, Department of Global Health, Stellenbosch University, Cape Town, South Africa,Division of Social & Behavioural Sciences, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Asanda Mayeye
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Lucy Luphondo
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Thobile Mabuya
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Ntomboxolo Kalui
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Maia Lesosky
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa,Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Duduzile Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
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8
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Sowe A, Namatovu F, Cham B, Gustafsson PE. Missed opportunities for vaccination at point of care and their impact on coverage and urban-rural coverage inequity in the Gambia. Vaccine 2023; 41:7647-7654. [PMID: 37996292 DOI: 10.1016/j.vaccine.2023.11.041] [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: 09/06/2023] [Revised: 11/07/2023] [Accepted: 11/18/2023] [Indexed: 11/25/2023]
Abstract
INTRODUCTION Identifying actionable targets is crucial to improve overall and equity in vaccination coverage, and in line with the global Immunization Agenda 2030. Therefore, this study seeks to assess the prevalence of missed opportunities for simultaneous vaccination (MOSVs) and their impact on vaccination coverage and urban-rural inequity in The Gambia. METHODS We used data of children aged 12-23 months from The Gambia 2019/2020 demographic and health survey (weighted n = 1355) with seen vaccination cards. We analyzed: the frequency of MOSVs; percentage point coverage reduction attributable to MOSVs for 18 vaccine doses and full basic vaccination; and MOSVs' contribution to urban-rural coverage inequity through Blinder-Oaxaca decomposition. RESULTS Sixty percent of children experienced MOSVs, in both urban and rural areas, but urban MOSVs were more seldom corrected (35.9 % vs 45.3 %). All eighteen vaccine doses assessed could have achieved between one to eleven percentage points higher coverage if MOSVs had been avoided, with full basic vaccination gaining even more. While MOSV correction did not impact overall urban-rural coverage inequity, it did exacerbate (explained coefficient = -0.1007; P = 0.002) inequities among children who experienced MOSVs, explaining 95 % of the observed difference. CONCLUSION Our study highlights the prevalence and negative impact of MOSVs on overall vaccination coverage. Although MOSVs did not contribute significantly to the total urban-rural inequity in coverage, they have detrimental effects on vaccination coverage and urban-rural inequity among children who had experienced MOSVs. Addressing MOSVs, can enhance coverage and reduce the risk of under-vaccination, aligning with global initiatives.
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Affiliation(s)
- Alieu Sowe
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden; Expanded Program on Immunization, Ministry of Health, Banjul, the Gambia.
| | - Fredinah Namatovu
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
| | - Bai Cham
- Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Bakau, the Gambia; School of Public Health, Georgia State University, Atlanta, GA, USA
| | - Per E Gustafsson
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
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Ndwandwe D, Ndlovu M, Mayeye A, Luphondo N, Muvhulawa N, Ntamo Y, Dludla PV, Wiysonge CS. Trends in Vaccine Completeness in Children Aged 0-23 Months in Cape Town, South Africa. Vaccines (Basel) 2023; 11:1782. [PMID: 38140186 PMCID: PMC10747087 DOI: 10.3390/vaccines11121782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND We have previously determined that the occurrence of missed vaccination opportunities in children in Cape Town, South Africa, is shaped by both individual and contextual factors. These factors present valuable openings for enhancing quality and implementing broader strategies to enhance the delivery of routine Immunisation services. METHODS Here, we are further reporting regional-level data on the coverage and factors influencing vaccination completion within a similar study population, based on extensive data analysis from the 2016 South African Demographic and Health Survey. RESULTS AND DISCUSSION The study reveals commendable vaccination coverage for most vaccines within recommended schedules, with high rates of initial vaccinations at birth and during the primary vaccination schedule. However, there are notable areas for improvement, particularly in ensuring complete coverage for the second measles vaccine and the 18-month vaccine. Socio-demographic factors also play a role, with maternal education and caregiver awareness campaigns showing the potential to positively influence vaccination completeness. This study emphasises the importance of timely vaccinations during the early months of life and underscores the need for interventions to maintain coverage as children age. Specific sub-districts, such as Tygerberg, may require targeted efforts to enhance vaccination completeness. Additionally, assessing caregiver knowledge about child vaccination is deemed vital, as it can impact vaccination decisions and adherence. CONCLUSIONS The findings provide valuable insights for public health interventions in Cape Town, aimed at reducing the burden of vaccine-preventable diseases and ensuring the health of the region's youngest population.
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Affiliation(s)
- Duduzile Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
| | - Musawenkosi Ndlovu
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
| | - Asanda Mayeye
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
| | - Nomahlubi Luphondo
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
| | - Ndivhuwo Muvhulawa
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
- Department of Biochemistry, North-West University, Mafikeng Campus, Mmabatho 2735, South Africa
| | - Yonela Ntamo
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
| | - Phiwayinkosi V. Dludla
- Cochrane South Africa, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa; (M.N.); (A.M.); (N.L.); (N.M.); (Y.N.); (P.V.D.)
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, Empangeni 3886, South Africa
| | - Charles S. Wiysonge
- Vaccine Preventable Diseases Programme, Universal Health Coverage/Communicable and Non-Communicable Diseases Cluster, World Health Organization Regional Office for Africa, Brazzaville P.O. Box 06, Congo;
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10
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Dombou Zeufack AG, Noukeu Njinkui D, Whegang Youdom S, Ateudjieu J. Timeliness and missed opportunities for vaccination among children aged 0 to 23 months in Dschang health district, West region, Cameroon: A cross-sectional survey. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0001721. [PMID: 37314994 DOI: 10.1371/journal.pgph.0001721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 05/05/2023] [Indexed: 06/16/2023]
Abstract
Missed opportunities for vaccination (MOV) reflect quality of immunization service. The objective of this study was to assess vaccination timeliness, prevalence, and characteristics of MOVs among children aged 0-23 months, as well as knowledge, attitude and practice of health workers towards immunization. An exit interview method was used to select caregivers and health personnel. Selection took place in 26 health facilities within 14 health areas in the Dshcang Health district. Data were collected using two face-to-face questionnaires adapted from the World Health Organization (WHO) tools. We conducted an evaluation of all free vaccines in the Expanded Programme on Immunisation (EPI). We studied timeliness, assessed MOV, and knowledge, behaviour and attitude of health workers on immunization. Basic statistical tests were used to study the association between MOV and socio demographic characteristics. A total of 363 children aged 0 to 23 months were surveyed. A total of 88 (91.66%) of health personnel agreed to participate in our study. A total of 298 (82.1%) children had vaccination cards with dates, leading to 18% not completely vaccinated. Vaccination timeliness ranged from 20% to 77%. Overall MOV estimated was 23.83%, range from 0% to 16.4% among all vaccines. Among health workers, 70.45% (62/88) had insufficient knowledge on vaccination, 73.86% assessed the vaccination status of children during any routine visit and 74% ask parents to bring the child's vaccination record to any health facility visit. The study highlighted presence of MOV among children. Strategies for remedying this includes strengthening parents' knowledge, organizing refresher courses for health workers on vaccination, and systematically assessing children's vaccination status.
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Affiliation(s)
- Arsène Gautler Dombou Zeufack
- Department of Public health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Diomede Noukeu Njinkui
- Department of Public health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Solange Whegang Youdom
- Department of Public health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Jérôme Ateudjieu
- Department of Public health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
- Division of Health Operations Research, Ministry of Public Health, Yaoundé, Cameroon
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11
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Siddiqi DA, Ali RF, Shah MT, Dharma VK, Khan AA, Roy T, Chandir S. Evaluation of a Mobile-Based Immunization Decision Support System for Scheduling Age-Appropriate Vaccine Schedules for Children Younger Than 2 Years in Pakistan and Bangladesh: Lessons From a Multisite, Mixed Methods Study. JMIR Pediatr Parent 2023; 6:e40269. [PMID: 36800221 PMCID: PMC9984999 DOI: 10.2196/40269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/22/2022] [Accepted: 12/25/2022] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Missed opportunities for vaccination (MOVs), that is, when children interact with the health system but fail to receive age-eligible vaccines, pose a crucial challenge for equitable and universal immunization coverage. Inaccurate interpretations of complex catch-up schedules by health workers contribute to MOVs. OBJECTIVE We assessed the feasibility of a mobile-based immunization decision support system (iDSS) to automatically construct age-appropriate vaccination schedules for children and to prevent MOVs. METHODS A sequential exploratory mixed methods study was conducted at 6 immunization centers in Pakistan and Bangladesh. An android-based iDSS that is packaged in the form of an application programming interface constructed age-appropriate immunization schedules for eligible children. The diagnostic accuracy of the iDSS was measured by comparing the schedules constructed by the iDSS with the gold standard of evaluation (World Health Organization-recommended Expanded Programme on Immunization schedule constructed by a vaccines expert). Preliminary estimates were collected on the number of MOVs among visiting children (caused by inaccurate vaccination scheduling by vaccinators) that could be reduced through iDSS by comparing the manual schedules constructed by vaccinators with the gold standard. Finally, the vaccinators' understanding, perceived usability, and acceptability of the iDSS were determined through interviews with key informants. RESULTS From July 5, 2019, to April 11, 2020, a total of 6241 immunization visits were recorded from 4613 eligible children. Data were collected for 17,961 immunization doses for all antigens. The iDSS correctly scheduled 99.8% (17,932/17,961) of all age-appropriate immunization doses compared with the gold standard. In comparison, vaccinators correctly scheduled 96.8% (17,378/17,961) of all immunization doses. A total of 3.2% (583/17,961) of all due doses (across antigens) were missed in age-eligible children by the vaccinators across both countries. Vaccinators reported positively on the usefulness of iDSS, as well as the understanding and benefits of the technology. CONCLUSIONS This study demonstrated the feasibility of a mobile-based iDSS to accurately construct age-appropriate vaccination schedules for children aged 0 to 23 months across multicountry and low- and middle-income country settings, and underscores its potential to increase immunization coverage and timeliness by eliminating MOVs.
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Affiliation(s)
| | | | | | | | | | - Tapash Roy
- IRD Global, Singapore, Singapore.,IRD Bangladesh, Dhaka, Bangladesh
| | - Subhash Chandir
- IRD Global, Singapore, Singapore.,IRD Pakistan, Karachi, Pakistan
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Kabir Sulaiman S, Isma'il Tsiga-Ahmed F, Sale Musa M, Kabir Sulaiman A, Muhammad Dayyab F, Ab Khan M, Idris Ahmad S, Abasi-Okot Akpan U, Ibrahim Usman U, Tjjani Bako A. Prevalence, determinants, and reasons for malaria vaccine hesitancy among caregivers of under-five children in Nigeria: Results from a nationwide cross-sectional survey. Vaccine 2023; 41:1503-1512. [PMID: 36725434 DOI: 10.1016/j.vaccine.2023.01.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 01/18/2023] [Accepted: 01/24/2023] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Malaria contributes to an enormous global burden of disease and mortality, especially in children. Approximately one in every four global cases and deaths from malaria occurs in Nigeria. This study aims to evaluate the prevalence and correlates of community hesitancy to the malaria vaccine, including the reasons for the hesitancy, following the approval of the RTS,S malaria vaccine by the World Health Organization (WHO). METHODS This was a nationwide cross-sectional online survey of Nigerian adults conducted from 20th October to 30th November 2021. Participants who replied 'no' or 'maybe' to a question assessing their willingness to accept the RTS,S malaria vaccine were considered "hesitant". We fit a multivariate logistic regression model to report the adjusted odds ratio (aOR) and 95 % confidence interval (CI) for the factors associated with vaccine hesitancy. FINDINGS Among 3377 total respondents (1961 [57.86 %] males; mean age [SD]: 30[9.1]), 1010 (29.91 %) were hesitant. Receiving information about the RTS,S malaria vaccine initially from healthcare workers (vs. the internet) (aOR:0.55; 95 % CI:0.35-0.87) was significantly associated with lower odds of hesitancy. Conversely, earning a high income of over NGN100, 000 (vs. < NGN 30,000) per month (aOR: 2.10, 95 % CI: 1.36-3.24), belonging to other religious groups (vs. Islam) (aOR:3.25, 95 % CI:1.18-8.98), and having a family size of more than ten (vs. < 5) (aOR:1.84; 95 % CI:1.08-3.13) were significantly associated with a higher odds of hesitancy. The main reasons for vaccine hesitancy included fear of vaccine adverse effects (34.95 %), availability of other malaria preventive measures (33.96 %) and not seeing the positive effect of the vaccine in others first (32.97 %). CONCLUSION The findings of this survey provide a valuable blueprint for the development of targeted interventions to facilitate caregiver acceptance of the RTS,S vaccine.
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Affiliation(s)
| | | | - Muhammad Sale Musa
- Department of Medicine, Yobe State University Teaching Hospital, Damaturu, Nigeria
| | | | | | - Moien Ab Khan
- Health and Wellness Research Group, Department of Family Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates; Primary Care, NHS North West London, London TW3 3EB, United Kingdom
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13
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Manandhar P, Wannemuehler K, Danovaro-Holliday MC, Nic Lochlainn L, Shendale S, Sodha SV. Use of catch-up vaccinations in the second year of life (2YL) platform to close immunity gaps: A secondary DHS analysis in Pakistan, Philippines, and South Africa. Vaccine 2023; 41:61-67. [PMID: 36396512 PMCID: PMC9662756 DOI: 10.1016/j.vaccine.2022.10.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/05/2022] [Accepted: 10/19/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Immunity gaps caused by COVID-19-related disruptions highlight the importance of catch-up vaccination. Number of countries offering vaccines in second year of life (2YL) has increased, but use of 2YL for catch-up vaccination has been variable. We assessed pre-pandemic use of 2YL for catch-up vaccination in three countries (Pakistan, the Philippines, and South Africa), based on existence of a 2YL platform (demonstrated by offering second dose of measles-containing vaccine (MCV2) in 2YL), proportion of card availability, and geographical variety. METHODS We conducted a secondary data analysis of immunization data from Demographic and Health Surveys (DHS) in Pakistan (2017-2018), the Philippines (2017), and South Africa (2016). We conducted time-to-event analyses for pentavalent vaccine (diphtheria-tetanus-pertussis-Hepatitis B-Haemophilus influenzae type b [Hib]) and MCV and calculated use of 2YL and MCV visits for catch-up vaccination. RESULTS Among 24-35-month-olds with documented dates, coverage of third dose of pentavalent vaccine increased in 2YL by 2%, 3%, and 1% in Pakistan, Philippines, and South Africa, respectively. MCV1 coverage increased in 2YL by 5% in Pakistan, 10% in the Philippines, and 3% in South Africa. In Pakistan, among 124 children eligible for catch-up vaccination of pentavalent vaccine at time of a documented MCV visit, 45% received a catch-up dose. In the Philippines, among 381 eligible children, 38% received a pentavalent dose during an MCV visit. In South Africa, 50 children were eligible for a pentavalent vaccine dose before their MCV1 visit, but only 20% received it; none with MCV2. CONCLUSION Small to modest vaccine coverage improvements occurred in all three countries through catch-up vaccination in 2YL but many missed opportunities for vaccination continue to occur. Using the 2YL platform can increase coverage and close immunity gaps, but immunization programmes need to change policies, practices, and monitor catch-up vaccination to maximize the potential.
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Affiliation(s)
- Porcia Manandhar
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Kathleen Wannemuehler
- Department of Biostatistics & Medical Informatics, University of Wisconsin - Madison, WI, USA
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Mengesha EW, Tessema GA, Assefa Y, Alene GD. Social capital and its role to improve maternal and child health services in Northwest Ethiopia: A qualitative study. PLoS One 2023; 18:e0284592. [PMID: 37083885 PMCID: PMC10120927 DOI: 10.1371/journal.pone.0284592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/04/2023] [Indexed: 04/22/2023] Open
Abstract
BACKGROUND Social capital is a set of shared values that allows individuals or groups receive emotional, instrumental or financial resources flow. In Ethiopia, despite people commonly involved in social networks, there is a dearth of evidence exploring whether membership in these networks enhances uptake of maternal and child health (MCH) services. This study aimed to explore perspectives of women, religious leaders and community health workers (CHWs) on social capital to improve uptake of MCH services in Northwest Ethiopia. METHODS We employed a qualitative study through in-depth interviews with key informants, and focus group discussions. A maximum variation purposive sampling technique was used to select 41 study participants (11 in-depth interviews and 4 FGDs comprising 7-8 participants). Data were transcribed verbatim and thematic analysis was employed using ATLAS.ti software. RESULTS Four overarching themes and 13 sub-themes of social capital were identified as factors that improve uptake of MCH services. The identified themes were social networking, social norms, community support, and community cohesion. Most women, CHWs and religious leaders participated in social networks. These social networks enabled CHWs to create awareness on MCH services. Women, religious leaders and CHWs perceived that existing social capital improves the uptake of MCH services. CONCLUSION The community has an indigenous culture of providing emotional, instrumental and social support to women through social networks. So, it would be useful to consider the social capital of family, neighborhood and community as a tool to improve utilization of MCH services. Therefore, policymakers should design people-centered health programs to engage existing social networks, and religious leaders for improving MCH services.
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Affiliation(s)
- Endalkachew Worku Mengesha
- Department of Reproductive Health and Population Studies, School of Public Health, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Gizachew A Tessema
- Curtin School of Population Health, Curtin University, Perth, WA, Australia
| | - Yibeltal Assefa
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - Getu Degu Alene
- Department of Epidemiology and Biostatistics, School of Public Health, College of Medicine & Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
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Blasioli E, Mansouri B, Tamvada SS, Hassini E. Vaccine Allocation and Distribution: A Review with a Focus on Quantitative Methodologies and Application to Equity, Hesitancy, and COVID-19 Pandemic. OPERATIONS RESEARCH FORUM 2023; 4:27. [PMCID: PMC10028329 DOI: 10.1007/s43069-023-00194-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
This review focuses on vaccine distribution and allocation in the context of the current COVID-19 pandemic. The implications discussed are in the areas of equity in vaccine distribution and allocation (at a national level as well as worldwide), vaccine hesitancy, game-theoretic modeling to guide decision-making and policy-making at a governmental level, distribution and allocation barriers (in particular in low-income countries), and operations research (OR) mathematical models to plan and execute vaccine distribution and allocation. To conduct this review, we adopt a novel methodology that consists of three phases. The first phase deploys a bibliometric analysis; the second phase concentrates on a network analysis; and the last phase proposes a refined literature review based on the results obtained by the previous two phases. The quantitative techniques utilized to conduct the first two phases allow describing the evolution of the research in this area and its potential ramifications in future. In conclusion, we underscore the significance of operations research (OR)/management science (MS) research in addressing numerous challenges and trade-offs connected to the current pandemic and its strategic impact in future research.
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Affiliation(s)
- Emanuele Blasioli
- grid.25073.330000 0004 1936 8227DeGroote School of Business, McMaster University, Hamilton, Canada
| | - Bahareh Mansouri
- grid.412362.00000 0004 1936 8219Sobey School of Business, Saint Mary’s University, Halifax, Canada
| | - Srinivas Subramanya Tamvada
- grid.29857.310000 0001 2097 4281Department of Industrial and Manufacturing Engineering, Pennsylvania State University, State College, PA, USA, PennsyIvania, USA
| | - Elkafi Hassini
- grid.25073.330000 0004 1936 8227DeGroote School of Business, McMaster University, Hamilton, Canada
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Makoae M, Tolla T, Mokomane Z, Mokhele T. Structural violence in South African primary healthcare facilities: insights from discussions with adolescents and young people seeking sexual and reproductive health needs. Int J Qual Stud Health Well-being 2022; 17:2056955. [PMID: 35341478 PMCID: PMC8959501 DOI: 10.1080/17482631.2022.2056955] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction. South Africa has an enabling legislative and policy framework that promotes the protection of adolescents and young people’s sexual and reproductive health and rights. Much of the literature in this field has identified discriminatory and hostile attitudes from healthcare workers as a major underlying factor to negative sexual and reproductive health outcomes for this age cohort. Not as well understood is the role of structural violence although this type of violence, through its structures of injustice and inequalities, is closely associated with stigma and discrimination. Data and sources. To contribute to closing this research gap, this paper draws on the findings of a larger qualitative study, specifically focus group discussions with young people aged 15–24 years. Results. The consequences of these attitudes within the structural violence framework are illuminated as are recommendations for enhancing access to sexual and reproductive health and services by adolescents and young people. Discussion and conclusion. Key among the latter is that young people’s sexual and reproductive health needs and wellbeing should be pursued through a multisectoral approach that encompasses stigma reduction interventions involving the young people, families, and communities collaborating with healthcare workers.
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Affiliation(s)
- Mokhantšo Makoae
- Developmental Capable and Ethical State, Human Sciences Research Council, Pretoria, South Africa
| | - Tsidiso Tolla
- Public Health and Family Medicine, University of Cape Town, Rondebosch, South Africa
| | - Zitha Mokomane
- Sociology Department, University of Pretoria, Pretoria, South Africa
| | - Tholang Mokhele
- Developmental Capable and Ethical State, Human Sciences Research Council, Pretoria, South Africa
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Andrade-Guerrero F, Tapia A, Andrade V, Vásconez-González J, Andrade-Guerrero J, Noroña-Calvachi C, Izquierdo-Condoy JS, Yeager J, Ortiz-Prado E. False Contraindications for Vaccinations Result in Sub-Optimal Vaccination Coverage in Quito, Ecuador: A Cross-Sectional Study. Vaccines (Basel) 2022; 11:vaccines11010060. [PMID: 36679905 PMCID: PMC9861379 DOI: 10.3390/vaccines11010060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/15/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Vaccination coverage in Ecuador has decreased since 2013, falling short of the World Health Organization's vaccination goal. There are several causes for this deficiency in coverage, one of these are lost vaccination opportunities, which are caused when a patient without contraindications postpones, or for other reasons fails to receive a recommended immunization. The objective of this study was to determine the state of knowledge regarding vaccination contraindications among the Metropolitan District of Quito health personnel to assess missed vaccination opportunities. Through this cross-sectional descriptive study, health personnel were surveyed online and asked 18 clinical scenarios which were created to evaluate their knowledge of the true contraindications of vaccination, and measure missed opportunities. A total of 273 surveys were collected; 74% belonged to the public health system, and the rest represented by private practitioners. Of those surveyed, 98.2% of health personnel had improperly denied vaccination at least once. We specifically found vaccinations were incorrectly denied more frequently in cases where the hypothetical patient presented mild or moderate fever cases. The use of corticosteroids, autoimmune diseases, and egg allergy were also incorrectly denied (89%, 71.4%, 72.9%, and 58.6%, respectively). Among the health personnel surveyed, there is an apparent lack of knowledge of the true contraindications of vaccination and differences in knowledge about contraindications according to personnel in charge of administering immunization to children. Our preliminary results suggest that lack of education related to side effects could be biasing medical professionals' decisions, causing them to unnecessarily delay or deny vaccinations, which likely contributes to explaining low overall vaccination coverage in Quito, the capital city of Ecuador.
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Affiliation(s)
- Felipe Andrade-Guerrero
- One Health Research Group, Faculty of Medicine, Universidad de las Américas, Quito 170137, Ecuador
| | - Adriana Tapia
- One Health Research Group, Faculty of Medicine, Universidad de las Américas, Quito 170137, Ecuador
| | - Vinicio Andrade
- Department of Pediatrics, Metropolitano Hospital, Quito 170137, Ecuador
| | - Jorge Vásconez-González
- One Health Research Group, Faculty of Medicine, Universidad de las Américas, Quito 170137, Ecuador
| | | | | | - Juan S. Izquierdo-Condoy
- One Health Research Group, Faculty of Medicine, Universidad de las Américas, Quito 170137, Ecuador
- Health Management and Research Area, Universidad Internacional Iberoamericana, Arecibo 00613, Puerto Rico
| | - Justin Yeager
- Grupo de Investigación en Medio Ambiente y Salud BIOMAS, Quito 170137, Ecuador
| | - Esteban Ortiz-Prado
- One Health Research Group, Faculty of Medicine, Universidad de las Américas, Quito 170137, Ecuador
- Correspondence:
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Sulaiman SK, Musa MS, Tsiga-Ahmed FI, Dayyab FM, Sulaiman AK, Bako AT. A systematic review and meta-analysis of the prevalence of caregiver acceptance of malaria vaccine for under-five children in low-income and middle-income countries (LMICs). PLoS One 2022; 17:e0278224. [PMID: 36455209 PMCID: PMC9715017 DOI: 10.1371/journal.pone.0278224] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 11/13/2022] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION Malaria is the second leading cause of death in children after diarrheal disease, with low- and middle-income countries (LMICs) accounting for over 9 in 10 incidence and deaths. Widespread acceptance and uptake of the RTS,S vaccine, recently approved by the world health organization (WHO), is projected to significantly reduce malaria incidence and deaths. Therefore, we conducted this systematic review and meta-analysis with the aim to determine the malaria vaccine acceptance rate and the factors associated with acceptance. METHODS We searched six databases including Google Scholar, PubMed, Cochrane, African Index Medicus, The Regional Office for Africa Library, and WHO Institutional Repository for Information Sharing (IRIS) to identify studies evaluating the malaria vaccine acceptance rate. This systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) guidelines. Studies were included if they were original articles published in the English language in peer-reviewed journals and assessed the prevalence of willingness to accept a free malaria vaccine, and not qualitative. The risk of publication bias was checked using both Beggar's funnel plot and Egger's test, while the I2 statistic was used to assess the heterogeneity of the included studies. Study quality was determined using the Newcastle-Ottawa scale. A meta-analysis was performed using a random effects model to evaluate the pooled prevalence of malaria vaccine acceptance. The protocol for this article was registered prospectively on the International Prospective Register for Systematic Reviews (PROSPERO), with ID number CRD42022334282). RESULTS Our analysis included 11 studies with a total sample size of 14, 666 participants. The aggregate malaria vaccine acceptance rate was 95.3% (95% CI:93.0%-97.2%). Among the general population, the acceptance rate was 96.3% (95% CI:92.0%-99.0%) and among mothers, it was 94.4% (95% CI:90.8%-97.2%). By country, Nigeria had the highest acceptance rate (97.6%, 95% CI:96.0%-98.8%), followed by Ghana (94.6%, 95% CI:93.8%-95.3%) and Tanzania (92.5%, 95% CI:84.4%-97.8%). Sociodemographic determinants of vaccine acceptance included place of residence, tribe, age, sex, occupation, and religion. Reasons for low acceptance included safety concerns, efficacy profile, vaccine's requirement for multiple injections, and poor level of awareness. CONCLUSION Future efforts should be focused on identifying factors that may improve the actual uptake of the RTS,S vaccine in malaria-endemic communities.
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Affiliation(s)
| | - Muhammad Sale Musa
- Department of Medicine, Yobe State University Teaching Hospital, Damaturu, Nigeria
| | - Fatimah Ismail Tsiga-Ahmed
- Department of Community Medicine, Bayero University Kano, Kano, Nigeria
- Aminu Kano Teaching Hospital, Kano, Nigeria
| | - Farouq Muhammad Dayyab
- Infectious Diseases Hospital, Kano, Nigeria
- Department of Medicine, Kwanar Dawaki Isolation Center Kano, Kano, Kano State, Nigeria
- Department of Medicine, King Hamad University Hospital, Muharraq, Bahrain
| | - Abdulwahab Kabir Sulaiman
- Department of Medicine, Kwanar Dawaki Isolation Center Kano, Kano, Kano State, Nigeria
- Murtala Muhammad Specialist Hospital, Kano, Nigeria
| | - Abdulaziz Tijjani Bako
- Center for Outcomes Research, Houston Methodist, Houston, Texas, United States of America
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Périères L, Séror V, Boyer S, Sokhna C, Peretti-Watel P. Reasons given for non-vaccination and under-vaccination of children and adolescents in sub-Saharan Africa: A systematic review. Hum Vaccin Immunother 2022; 18:2076524. [PMID: 35709342 PMCID: PMC9481092 DOI: 10.1080/21645515.2022.2076524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/07/2022] [Indexed: 12/03/2022] Open
Abstract
To achieve the full benefits of vaccination, it is key to understand the underlying causes of low vaccination by researching the barriers to vaccination at a local level. This systematic literature review aims to identify the reasons given by community members for the non-vaccination and under-vaccination of children and adolescents in sub-Saharan Africa. PubMed, Web of Science, PsycINFO, African Index Medicus, and African Journals Online databases were searched to identify articles published between 2010 and 2020. A total of 37 articles were included. As 17 studies did not report the reasons for non-vaccination and under-vaccination separately, we considered these two outcomes as "incomplete vaccination". The most common reasons for incomplete vaccination were related to caregiver's time constraints, lack of knowledge regarding vaccination, the unavailability of vaccines/personnel in healthcare facilities, missed opportunities for vaccination, caregiver's fear of minor side effects, poor access to vaccination services, and caregiver's vaccination beliefs.
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Affiliation(s)
| | - Valérie Séror
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Sylvie Boyer
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, Marseille, France
| | - Cheikh Sokhna
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Patrick Peretti-Watel
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
- ORS PACA, Observatoire régional de la santé Provence-Alpes-Côte d’Azur, Marseille, France
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Mahachi K, Kessels J, Boateng K, Jean Baptiste AE, Mitula P, Ekeman E, Nic Lochlainn L, Rosewell A, Sodha SV, Abela-Ridder B, Gabrielli AF. Zero- or missed-dose children in Nigeria: Contributing factors and interventions to overcome immunization service delivery challenges. Vaccine 2022; 40:5433-5444. [PMID: 35973864 PMCID: PMC9485449 DOI: 10.1016/j.vaccine.2022.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 06/11/2022] [Accepted: 07/24/2022] [Indexed: 11/28/2022]
Abstract
'Zero-dose' refers to a person who does not receive a single dose of any vaccine in the routine national immunization schedule, while 'missed dose' refers to a person who does not complete the schedule. These peopleremain vulnerable to vaccine-preventable diseases, and are often already disadvantaged due to poverty, conflict, and lack of access to basic health services. Globally, more 22.7 million children are estimated to be zero- or missed-dose, of which an estimated 3.1 million (∼14 %) reside in Nigeria.We conducted a scoping review tosynthesize recent literature on risk factors and interventions for zero- and missed-dosechildren in Nigeria. Our search identified 127 papers, including research into risk factors only (n = 66); interventions only (n = 34); both risk factors and interventions (n = 18); and publications that made recommendations only (n = 9). The most frequently reported factors influencing childhood vaccine uptake were maternal factors (n = 77), particularly maternal education (n = 22) and access to ante- and perinatal care (n = 19); heterogeneity between different types of communities - including location, region, wealth, religion, population composition, and other challenges (n = 50); access to vaccination, i.e., proximity of facilities with vaccines and vaccinators (n = 37); and awareness about immunization - including safety, efficacy, importance, and schedules (n = 18).Literature assessing implementation of interventions was more scattered, and heavily skewed towards vaccination campaigns and polio eradication efforts. Major evidence gaps exist in how to deliver effective and sustainable routine childhood immunization. Overall, further work is needed to operationalise the learnings from these studies, e.g. through applying findings to Nigeria's next review of vaccination plans, and using this summary as a basis for further investigation and specific recommendations on effective interventions.
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Affiliation(s)
- Kurayi Mahachi
- College of Public Health, University of Iowa, Iowa City, Iowa, United States
| | | | - Kofi Boateng
- Nigeria Country Office, World Health Organization, Abuja, Nigeria
| | | | - Pamela Mitula
- Inter-Country Support Team, Regional Office for Africa, World Health Organization, Ouagadougou, Burkina Faso
| | - Ebru Ekeman
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - Laura Nic Lochlainn
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - Alexander Rosewell
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - Samir V Sodha
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - Bernadette Abela-Ridder
- Department of Control of Neglected Tropical Diseases (NTD), World Health Organization, Geneva, Switzerland
| | - Albis Francesco Gabrielli
- Department of Control of Neglected Tropical Diseases (NTD), World Health Organization, Geneva, Switzerland.
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Yelverton V, Hair NL, Ghosh SH, Mfinanga SG, Ngadaya E, Baumgartner JN, Ostermann J, Vasudevan L. Beyond coverage: Rural-urban disparities in the timeliness of childhood vaccinations in Tanzania. Vaccine 2022; 40:5483-5493. [PMID: 35961796 PMCID: PMC9954535 DOI: 10.1016/j.vaccine.2022.07.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/16/2022] [Accepted: 07/19/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Timely vaccination maximizes efficacy for preventing infectious diseases. In the absence of national vaccination registries, representative sample survey data hold vital information on vaccination coverage and timeliness. This study characterizes vaccination coverage and timeliness in Tanzania and provides an analytic template to inform contextually relevant interventions and evaluate immunization programs. METHODS Cross-sectional data on 6,092 children under age 3 from the 2015-16 Tanzania Demographic and Health Survey were used to examine coverage and timeliness for 14 vaccine doses recommended in the first year of life. The Kaplan-Meier method was used to model time to vaccination. Cox proportional hazard models were used to examine factors associated with timely vaccination. RESULTS Substantial rural-urban disparities in vaccination coverage and timeliness were observed for all vaccines. Across 14 recommended doses, documented coverage ranged from 52 % to 79 %. Median vaccination delays lasted up to 35 days; gaps were larger among rural than urban children and for later doses in vaccine series. Among rural children, median delays exceeded 35 days for the 3rd doses of the polio, pentavalent, and pneumococcal vaccines. Median delays among urban children were < 21 days for all doses. Among rural and urban children, lower maternal education and delivery at home were associated with increased risk of delayed vaccination. In rural settings, less household wealth and greater distance to a health facility were also associated with increased risk of delayed vaccination. DISCUSSION This study highlights persistent gaps in uptake and timeliness of childhood vaccinations in Tanzania and substantial rural-urban disparities. While the results provide an informative situation assessment and outline strategies for identifying unvaccinated children, a national electronic registry is critical for comprehensive assessments of the performance of vaccination programs. The timeliness measure employed in this study-the amount of time children are un- or undervaccinated-may serve as a sensitive performance metric for these programs.
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Affiliation(s)
- Valerie Yelverton
- Department of Health Services Policy & Management, University of South Carolina, 915 Greene Street, Columbia, SC 29208, USA
| | - Nicole L Hair
- Department of Health Services Policy & Management, University of South Carolina, 915 Greene Street, Columbia, SC 29208, USA
| | - Suvomita Happy Ghosh
- Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27710, USA
| | - Sayoki Godfrey Mfinanga
- Muhimbili Research Centre, National Institute for Medical Research, P.O. Box 65001, Dar-es-Salaam, Tanzania; Muhimbili University of Health and Allied Sciences, United Nations Rd, Dar es Salaam, Tanzania; The Nelson Mandela African Institution of Science and Technology (NM-AIST), Nelson Mandela Rd, Arusha, Tanzania; Alliance for Africa Research and Innovation (A4A), Dar es Salaam, Tanzania
| | - Esther Ngadaya
- Muhimbili Research Centre, National Institute for Medical Research, P.O. Box 65001, Dar-es-Salaam, Tanzania
| | - Joy Noel Baumgartner
- Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27710, USA; School of Social Work, University of North Carolina at Chapel Hill, Tate-Turner-Kuralt Building, 325 Pittsboro St, CB #3550, Chapel Hill, NC 27599, USA
| | - Jan Ostermann
- Department of Health Services Policy & Management, University of South Carolina, 915 Greene Street, Columbia, SC 29208, USA; Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27710, USA; South Carolina SmartState Center for Healthcare Quality, University of South Carolina, 915 Greene Street, Columbia, SC 29208, USA
| | - Lavanya Vasudevan
- Duke Global Health Institute, Duke University, 310 Trent Drive, Durham, NC 27710, USA; Department of Family Medicine and Community Health, 2200 W. Main Street, Suite 600, School of Medicine, Duke University, Durham, NC 27710, USA.
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22
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Jusril H, Rachmi CN, Amin MR, Dynes M, Sitohang V, Untung ASB, Damayanti R, Ariawan I, Pronyk PM. Factors affecting vaccination demand in Indonesia: a secondary analysis and multimethods national assessment. BMJ Open 2022; 12:e058570. [PMID: 35953251 PMCID: PMC9379477 DOI: 10.1136/bmjopen-2021-058570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Vaccine hesitancy remains a major barrier to immunisation coverage worldwide. We explored influence of hesitancy on coverage and factors contributing to vaccine uptake during a national measles-rubella (MR) campaign in Indonesia. DESIGN Secondary analyses of qualitative and quantitative data sets from existing cross-sectional studies conducted during and around the campaign. METHODS Quantitative data used in this assessment included daily coverage reports generated by health workers, district risk profiles that indicate precampaign immunisation programme performance, and reports of campaign cessation due to vaccine hesitancy. We used t-test and χ2 tests for associations. The qualitative assessment employed three parallel national and regional studies. Deductive thematic analysis examined factors for acceptance among caregivers, health providers and programme managers. RESULTS Coverage data were reported from 6462 health facilities across 395 districts from 1 August to 31 December 2018. The average district coverage was 73%, with wide variation between districts (2%-100%). One-third of districts fell below 70% coverage thresholds. Sixty-two of 395 (16%) districts paused the campaign due to hesitancy. Coverage among districts that never paused campaign activities due to hesitancy was significantly higher than rates for districts ever-pausing the campaign (81% vs 42%; p<0.001). Precampaign adequacy of district immunisation programmes did not explain coverage gaps (p=0.210). Qualitative analysis identified acceptance enablers including using digital health monitoring and feedback systems, increasing caregiver knowledge and awareness, making immunisation social norm, effective cross-sectoral collaboration, conducive service environment and positive experiences for mothers and children. Barriers included misinformation diffusion on social media, halal-haram issues, lack of healthcare provider knowledge, negative family influences and traditions, previous poor experiences and misinformation on adverse events. CONCLUSION Barriers to vaccine uptake contributed to coverage gaps during national MR campaign in Indonesia. A range of supply-related and demand-related strategies were identified to address hesitancy contributors. Advancing a portfolio of tailored multilevel interventions will be critical to enhance vaccine acceptance.
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Affiliation(s)
- Hafizah Jusril
- Research, Reconstra Utama Integra, Jakarta, DKI Jakarta, Indonesia
- Biostatistics, Universitas Indonesia, Depok, Jawa Barat, Indonesia
| | | | | | - Michelle Dynes
- UNICEF East Asia Pacific Regional Office, Bangkok, Thailand
| | - Vensya Sitohang
- Ministry of Health of the Republic of Indonesia, Jakarta, Jakarta, Indonesia
| | | | - Rita Damayanti
- Center for Health Research, Universitas Indonesia, Depok, Jawa Barat, Indonesia
| | - Iwan Ariawan
- Research, Reconstra Utama Integra, Jakarta, DKI Jakarta, Indonesia
- Biostatistics, Universitas Indonesia, Depok, Jawa Barat, Indonesia
- Center for Health Research, Universitas Indonesia, Depok, Jawa Barat, Indonesia
| | - Paul M Pronyk
- The SingHealth Duke-NUS Global Health Institute, Singapore
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23
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Why are missed opportunities for immunisation and immunisation defaulting among children indistinguishable? Ann Med Surg (Lond) 2022; 80:104268. [PMID: 35968228 PMCID: PMC9363972 DOI: 10.1016/j.amsu.2022.104268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 07/20/2022] [Indexed: 11/20/2022] Open
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24
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Borras-Bermejo B, Panunzi I, Bachy C, Gil-Cuesta J. Missed opportunities for vaccination (MOV) in children up to 5 years old in 19 Médecins Sans Frontières-supported health facilities: a cross-sectional survey in six low-resource countries. BMJ Open 2022; 12:e059900. [PMID: 35882455 PMCID: PMC9330337 DOI: 10.1136/bmjopen-2021-059900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To describe missed opportunities for vaccination (MOV) among children visiting Médecins Sans Frontières (MSF)-supported facilities, their related factors, and to identify reasons for non-vaccination. DESIGN Cross-sectional surveys conducted between 2011 and 2015. SETTING AND PARTICIPANTS Children up to 59 months of age visiting 19 MSF-supported facilities (15 primary healthcare centres and four hospitals) in Afghanistan, Democratic Republic of the Congo, Mauritania, Niger, Pakistan and South Sudan. Only children whose caregivers presented their vaccination card were included. OUTCOME MEASURES We describe MOV prevalence and reasons for no vaccination. We also assess the association of MOV with age, type of facility and reason for visit. RESULTS Among 5055 children's caregivers interviewed, 2738 presented a vaccination card of whom 62.8% were eligible for vaccination, and of those, 64.6% had an MOV. Presence of MOV was more likely in children visiting a hospital or a health facility for a reason other than vaccination. MOV occurrence was significantly higher among children aged 12-23 months (84.4%) and 24-59 months (88.3%) compared with children below 12 months (56.2%, p≤0.001). Main reasons reported by caregivers for MOV were lack of vaccines (40.3%), reason unknown (31.2%) and not being informed (17.6%). CONCLUSIONS Avoiding MOV should remain a priority in low-resource settings, in line with the new 'Immunization Agenda 2030'. Children beyond their second year of life are particularly vulnerable for MOV. We strongly recommend assessment of eligibility for vaccination as routine healthcare practice regardless of the reason for the visit by screening vaccination card. Strengthening implementation of 'Second year of life' visits and catch-up activities are proposed strategies to reduce MOV.
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Affiliation(s)
- Blanca Borras-Bermejo
- Servei de Medicina Preventiva i Epidemiologia, Vall d'Hebron Hospital Universitari, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Isabella Panunzi
- Medical Department, Operational Centre Brussels, Médecins Sans Frontières, Brussels, Belgium
| | - Catherine Bachy
- Medical Department, Operational Centre Brussels, Médecins Sans Frontières, Brussels, Belgium
| | - Julita Gil-Cuesta
- Luxembourg Operational Research Unit, Operational Centre Brussels, Médecins Sans Frontières, Brussels, Belgium
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25
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Missed Opportunities for Vaccination and Associated Factors among Children Attending Primary Health Care Facilities in Cape Town, South Africa: A Pre-Intervention Multilevel Analysis. Vaccines (Basel) 2022; 10:vaccines10050785. [PMID: 35632542 PMCID: PMC9144782 DOI: 10.3390/vaccines10050785] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/04/2022] [Accepted: 05/12/2022] [Indexed: 11/16/2022] Open
Abstract
Despite the substantial efforts at ensuring universal access to routine immunisation services among children in South Africa, major gaps in immunisation coverage remain. This study assessed the magnitude of missed opportunities for vaccination (MOV) and associated factors among children aged 0–23 months attending primary health care (PHC) facilities in Cape Town. We used multilevel binomial logistic regression models to explore individual and contextual factors associated with MOV, with children aged 0–23 months at Level 1, nested within PHC facilities (Level 2). A total of 674 children and their caregivers were enrolled. MOV prevalence was 14.1%, ranging from 9.1% to 18.9% across sub-districts. Dose-specific MOV prevalence was highest for the second dose of measles vaccine (9.5%) and lowest for the first dose of rotavirus vaccine (0.6%). The likelihood of a child experiencing MOV was significantly associated with caregivers’ low level of education (Odds ratio (OR) = 3.53, 95% credible interval (CrI): 1.13–11.03), recent receipt of immunisation messages (OR = 0.46, 95%CrI: 0.25–0.87), shared immunisation decision making by both parents (OR = 0.21, 95%CrI: 0.07–0.62) and health facility staff number (OR = 0.18, 95%CrI: 0.06–0.61). The burden of MOV among children in Cape Town is influenced by individual and contextual factors, which provide important opportunities for quality improvement and broader strategies to improve routine immunisation service delivery.
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26
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Kulkarni S, Sengeh P, Eboh V, Jalloh MB, Conteh L, Sesay T, Ibrahim N, Manneh PO, Kaiser R, Jinnai Y, Wallace AS, Prybylski D, Jalloh MF. Role of Information Sources in Vaccination Uptake: Insights From a Cross-Sectional Household Survey in Sierra Leone, 2019. GLOBAL HEALTH: SCIENCE AND PRACTICE 2022; 10:GHSP-D-21-00237. [PMID: 35294376 PMCID: PMC8885335 DOI: 10.9745/ghsp-d-21-00237] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022]
Abstract
Our findings suggest that health workers and faith leaders are important sources of information to deliver vaccination messages, given their strong association with vaccination confidence and uptake. In this context, vaccination promotion efforts that integrate faith leaders and health workers may help increase vaccination uptake. Introduction: There is limited understanding of the potential impact of information sources on vaccination attitudes and behaviors in low-income countries. We examined how exposure to immunization information sources may be associated with vaccination uptake in Sierra Leone. Methods: In 2019, a household survey was conducted using multistage cluster sampling to randomly select 621 caregivers of children aged 12–23 months in 4 districts in Sierra Leone. We measured exposure to various sources of immunization information and 2 outcomes: (1) vaccination confidence using an aggregate score (from 12 Likert items, informed by previously validated scale) that was dichotomized into a binary variable; (2) uptake of the third dose of diphtheria-pertussis-tetanus-hepatitis B-Haemophilus influenzae type-b-pentavalent vaccine (penta-3) based on card record or through caregiver recall when card was unavailable. Associations between information sources and the outcomes were examined using modified Poisson regression with robust variance estimator. Results: Weighted estimate for penta-3 uptake was 81% (75.2%–85.5%). The likelihood of uptake of penta-3 was significantly greater when caregiver received information from health facilities (adjusted prevalence ratio [aPR]=1.26, 95% confidence interval [CI]=1.1, 1.5), faith leaders (aPR=1.16, 95% CI=1.1, 1.3), and community health workers (aPR=1.13, 95% CI=1.003, 1.3). Exposure to greater number of information sources was associated with high penta-3 uptake (aPR=1.05, 95% CI=1.02, 1.1). Discussion: Immunization information received during health facility visits and through engagement with religious leaders may enhance vaccination uptake. Assessments to understand context-specific information dynamics should be prioritized in optimizing immunization outcomes.
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Affiliation(s)
- Shibani Kulkarni
- Global Immunization Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA.
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | | | - Victor Eboh
- Global Immunization Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | | | - Lansana Conteh
- Sierra Leone Ministry of Health and Sanitation, Freetown, Sierra Leone
| | - Tom Sesay
- Sierra Leone Ministry of Health and Sanitation, Freetown, Sierra Leone
| | | | | | - Reinhard Kaiser
- U.S. Centers for Disease Control and Prevention, Freetown, Sierra Leone
| | - Yuka Jinnai
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | - Aaron S Wallace
- Global Immunization Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Dimitri Prybylski
- Global Immunization Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Mohamed F Jalloh
- Global Immunization Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
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27
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Bobo FT, Asante A, Woldie M, Dawson A, Hayen A. Child vaccination in sub-Saharan Africa: Increasing coverage addresses inequalities. Vaccine 2022; 40:141-150. [PMID: 34794824 DOI: 10.1016/j.vaccine.2021.11.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 10/28/2021] [Accepted: 11/02/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Vaccines have substantially contributed to reducing morbidity and mortality among children, but inequality in coverage continues to persist. In this study, we aimed to examine inequalities in child vaccination coverage in sub-Saharan Africa. METHODS We analysed Demographic and Health Survey data in 25 sub-Saharan African countries. We defined full vaccination coverage as a child who received one dose of bacille Calmette-Guérin vaccine (BCG), three doses of diphtheria, pertussis, and tetanus vaccine (DTP 3), three oral polio vaccine doses (OPV 3), and one dose of measles vaccine. We used the concentration index (CCI) to measure wealth-related inequality in full vaccination, incomplete vaccination, and zero-dose children within and between countries. We fitted a multilevel regression model to identify predictors of inequality in receipts of full vaccination. RESULTS Overall, 56.5% (95% CI: 55.7% to 57.3%) of children received full vaccination, 35.1% (34.4% to 35.7%) had incomplete vaccination, while 8.4% (95% CI: 8.0% to 8.8%) of children remained unvaccinated. Full vaccination coverage across the 25 sub-Saharan African countries ranged from 24% in Guinea to 93% in Rwanda. We found pro-rich inequality in full vaccination coverage in 23 countries, except for Gambia and Namibia, where we found pro-poor vaccination coverage. Countries with lower vaccination coverage had higher inequalities suggesting pro-rich coverage, while inequality in unvaccinated children was disproportionately concentrated among disadvantaged subgroups. Four or more antenatal care contracts, childbirth at health facility, improved maternal education, higher household wealth, and frequently listening to the radio increased vaccine uptake. CONCLUSIONS Continued efforts to improve access to vaccination services are required in sub-Saharan Africa. Improving vaccination coverage and reducing inequalities requires enhancing access to quality services that are accessible, affordable, and acceptable to all. Vaccination programs should target critical social determinants of health and address barriers to better maternal health-seeking behaviour.
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Affiliation(s)
- Firew Tekle Bobo
- School of Public Health, Faculty of Health, University of Technology Sydney, Sydney, Australia; Department of Public Health, Institute of Health Sciences, Wollega University, Nekmete, Ethiopia.
| | - Augustine Asante
- School of Population Health, University of New South Wales, Sydney, Australia
| | - Mirkuzie Woldie
- Department of Health Policy and Management, Jimma University, Jimma, Ethiopia; Fenot Project of Harvard T.H. Chan School of Public Health, Addis Ababa, Ethiopia
| | - Angela Dawson
- School of Public Health, Faculty of Health, University of Technology Sydney, Sydney, Australia
| | - Andrew Hayen
- School of Public Health, Faculty of Health, University of Technology Sydney, Sydney, Australia
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28
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Xu L, Li N, Zhang L, Ma R, Fang T, Liu Z, Zhan S. Febrile Seizures and Measles-Containing Vaccines in China: A Self-Controlled Case Series Study. Vaccines (Basel) 2021; 9:vaccines9101073. [PMID: 34696181 PMCID: PMC8541362 DOI: 10.3390/vaccines9101073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 01/25/2023] Open
Abstract
Little is known about the risk of febrile seizures (FS) after vaccination with measles-containing vaccines (MCVs) in middle- and low-income countries. This self-controlled case series study aimed to evaluate the risk of FSs in Chinese children using data from the Ningbo Regional Health Information Platform. The observation period was 0-12 and 13-24 months of age for the MR and MMR vaccines, respectively. The relative incidences (RIs) within 0-6 days, 7-13 days, 14-27 days, and 28-42 days after vaccination with MCVs were estimated. The remaining observation period was the control period. The RIs within 0-6 days, 7-13 days, 14-27 days, and 28-42 days after MR vaccination were 1.11 [95% confidence interval (CI) 0.33 to 3.70], 0.80 (95% CI 0.23 to 2.86), 1.67 (95% CI 0.81 to 3.42), and 1.02 (95% CI 0.49 to 2.14), respectively. The corresponding RIs after MMR vaccination were 0.99 (95% CI 0.56 to 1.75), 1.17 (95% CI 0.68 to 2.01), 0.87 (95% CI 0.54 to 1.39), and 0.85 (95% CI 0.54 to 1.34), respectively. This study suggests that China's vaccination schedule for MCVs, as suggested by the World Health Organization (WHO) for countries with a high risk of measles mortality and ongoing transmission, does not increase the risk of FSs.
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Affiliation(s)
- Lu Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China; (L.X.); (Z.L.)
| | - Ning Li
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China; (N.L.); (L.Z.); (R.M.); (T.F.)
| | - Liang Zhang
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China; (N.L.); (L.Z.); (R.M.); (T.F.)
| | - Rui Ma
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China; (N.L.); (L.Z.); (R.M.); (T.F.)
| | - Ting Fang
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China; (N.L.); (L.Z.); (R.M.); (T.F.)
| | - Zhike Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China; (L.X.); (Z.L.)
| | - Siyan Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China; (L.X.); (Z.L.)
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
- Center for Intelligent Public Health, Institute for Artificial Intelligence, Peking University, Beijing 100191, China
- Correspondence:
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29
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Rhoda DA, Prier ML, Clary CB, Trimner MK, Velandia-Gonzalez M, Danovaro-Holliday MC, Cutts FT. Using Household Surveys to Assess Missed Opportunities for Simultaneous Vaccination: Longitudinal Examples from Colombia and Nigeria. Vaccines (Basel) 2021; 9:vaccines9070795. [PMID: 34358211 PMCID: PMC8310031 DOI: 10.3390/vaccines9070795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 11/18/2022] Open
Abstract
One important strategy to increase vaccination coverage is to minimize missed opportunities for vaccination. Missed opportunities for simultaneous vaccination (MOSV) occur when a child receives one or more vaccines but not all those for which they are eligible at a given visit. Household surveys that record children’s vaccination dates can be used to quantify occurrence of MOSVs and their impact on achievable vaccination coverage. We recently automated some MOSV analyses in the World Health Organization’s freely available software: Vaccination Coverage Quality Indicators (VCQI) making it straightforward to study MOSVs for any Demographic & Health Survey (DHS), Multi-Indicator Cluster Survey (MICS), or Expanded Programme on Immunization (EPI) survey. This paper uses VCQI to analyze MOSVs for basic vaccine doses among children aged 12–23 months in four rounds of DHS in Colombia (1995, 2000, 2005, and 2010) and five rounds of DHS in Nigeria (1999, 2003, 2008, 2013, and 2018). Outcomes include percent of vaccination visits MOSVs occurred, percent of children who experienced MOSVs, percent of MOSVs that remained uncorrected (that is, the missed vaccine had still not been received at the time of the survey), and the distribution of time-to-correction for children who received the MOSV dose at a later visit.
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Affiliation(s)
- Dale A. Rhoda
- Biostat Global Consulting, Worthington, OH 43085, USA; (M.L.P.); (C.B.C.); (M.K.T.)
- Correspondence:
| | - Mary L. Prier
- Biostat Global Consulting, Worthington, OH 43085, USA; (M.L.P.); (C.B.C.); (M.K.T.)
| | - Caitlin B. Clary
- Biostat Global Consulting, Worthington, OH 43085, USA; (M.L.P.); (C.B.C.); (M.K.T.)
| | - Mary Kay Trimner
- Biostat Global Consulting, Worthington, OH 43085, USA; (M.L.P.); (C.B.C.); (M.K.T.)
| | - Martha Velandia-Gonzalez
- Comprehensive Family Immunization Unit, Pan American Health Organization, Washington, DC 20037, USA;
| | | | - Felicity T. Cutts
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK;
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30
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COVID-19 and the Gaping Wounds of South Africa's Suboptimal Immunisation Coverage: An Implementation Research Imperative for Assessing and Addressing Missed Opportunities for Vaccination. Vaccines (Basel) 2021; 9:vaccines9070691. [PMID: 34201684 PMCID: PMC8310047 DOI: 10.3390/vaccines9070691] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 11/17/2022] Open
Abstract
Despite South Africa's substantial investments in and efforts at ensuring universal access to immunisation services, progress has stalled and remains suboptimal across provinces and districts. An additional challenge is posed by the ongoing coronavirus disease 2019 (COVID-19) pandemic, which has disrupted immunisation services globally, including in South Africa. While there is growing evidence that missed opportunities for vaccination (MOV) are a major contributor to suboptimal immunisation progress globally, not much is known about the burden and determinants of MOV in the South African context. Herein, we make a case for assessing MOV as a strategy to address current immunisation coverage gaps while mitigating the adverse impacts of the COVID-19 pandemic on immunisation services. We illustrate a practical implementation research approach to assessing the burden of MOV among children in primary care settings; for understanding the factors associated with MOV; and for designing, implementing, and evaluating context-appropriate quality improvement interventions for addressing missed opportunities. Such efforts are vital for building health system resilience and maintaining immunisation programme capacity to optimally deliver essential health services such as routine childhood immunisation, even during pandemics.
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31
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Adetokunboh O, Iwu-Jaja CJ, Nnaji CA, Ndwandwe D. Missed opportunities for vaccination in Africa. Curr Opin Immunol 2021; 71:55-61. [PMID: 34087523 DOI: 10.1016/j.coi.2021.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/30/2021] [Accepted: 05/07/2021] [Indexed: 11/17/2022]
Abstract
The purpose of this review is to assess the extent of missed opportunities for vaccination (MOV) in Africa, determine the associated factors, and provide recommendations that countries could adopt in reducing MOV. Two databases were searched for multinational studies and systematic reviews reporting MOV and involving African countries. A total of 288 records were identified and 12 studies included for synthesis. The prevalence ranged from 47.0% to 62.1%, with a weighted mean of 27.3%. This review highlighted caregiver utilization, health service delivery, and healthcare worker' factors associated with MOV. Understanding the extent of MOV in Africa presents an opportunity for multiple approaches to resolve the differential factors that contribute to MOV, and to bridge the gap in vaccination coverage in the continent.
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Affiliation(s)
- Olatunji Adetokunboh
- Department of Science and Innovation-National Research Foundation (DSI-NRF), Centre of Excellence in Epidemiological Modelling and Analysis, Stellenbosch University, Stellenbosch, South Africa; Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Chukwudi A Nnaji
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa; School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Duduzile Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa.
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32
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Deb A, Mohanty S, Ou W, Rajagopalan S, Johnson KD. Pneumococcal vaccination coverage among adults aged 19 to 64 years with immuno-compromising conditions, cerebrospinal fluid (CSF) leaks, or cochlear implants in the US. Expert Rev Vaccines 2021; 20:331-345. [PMID: 33724134 DOI: 10.1080/14760584.2021.1898377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background: Adults with immuno-compromising conditions, CSF leaks, or cochlear implants are at increased risk for pneumococcal disease (high-risk patients), yet pneumococcal vaccination rates in the US for this group are low.Methods: A retrospective cohort analysis was conducted from 2010 to 2018 using the Truven Health MarketScan database to estimate pneumococcal vaccination coverage among adults aged 19 to 64 years newly diagnosed with high-risk conditions, and to assess factors associated with receiving the recommended pneumococcal vaccines.Results: The study sample included 2,497,799 adults aged 19 to 64 years old with newly diagnosed high-risk conditions. Most of the study cohort had seven or more annual physician office (52%) and pharmacy (56%) visits. The proportion of high-risk adults who received at least one pneumococcal vaccination increased from 5.4% after 1 year of follow-up to 14.2% after 6 years of follow-up. Compared to those who received no pneumococcal vaccination, high-risk adults who received any pneumococcal vaccination were more likely to be older, female, enrolled in an HMO, had more healthcare encounters, and were treated by a primary care provider.Conclusion: Despite numerous healthcare encounters annually, very few high-risk adults received pneumococcal vaccines, highlighting the need for implementing targeted interventions to increase vaccine uptake in this vulnerable population.
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Affiliation(s)
- Arijita Deb
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, USA
| | - Salini Mohanty
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, USA
| | - Wanmei Ou
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, USA
| | | | - Kelly D Johnson
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, USA
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Albaugh N, Mathew J, Choudhary R, Sitaraman S, Tomar A, Bajwa IK, Dhaliwal B, Shet A. Determining the burden of missed opportunities for vaccination among children admitted in healthcare facilities in India: a cross-sectional study. BMJ Open 2021; 11:e046464. [PMID: 33741673 PMCID: PMC7986782 DOI: 10.1136/bmjopen-2020-046464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES Children accessing healthcare systems represent a vulnerable population with risk factors for poor health outcomes, including vaccine-preventable diseases. We aimed to quantify missed vaccination opportunities among hospitalised children in India, and identify vaccination barriers perceived by caregivers and healthcare providers. DESIGN Cross-sectional study. SETTING Two public-sector tertiary-care hospitals in northern India, during November 2018 and March 2019. PARTICIPANTS We tracked 263 hospitalised children aged 1-59 months through hospital discharge, to assess vaccination status, and document catch-up vaccinations given during the hospital stay. We interviewed caregivers and healthcare providers to assess their perceptions on vaccination. OUTCOMES Proportion of hospitalised children considered under-vaccinated for their age; proportion of missed opportunities for vaccination among under-vaccinated children who were eligible for vaccination; and vaccine coverage by antigen. RESULTS We found that 65.4% (172/263) of hospitalised children were under-vaccinated for their age when they presented to the hospital. Among under-vaccinated children, 61.0% were less than 4 months old, and 55.6% reported prior contact with a health facility for a sick visit. The proportion of under-vaccinated children in hospitals were higher compared with the general population as indicated by regional vaccination coverage data. Among under-vaccinated children who were tracked till discharge, 98.1% (158/161) remained incompletely vaccinated at discharge and were considered 'missed opportunities for vaccination'. Perceived vaccination contraindications that are not part of established contraindications included in national and international guidelines was the most common reason for healthcare providers not to vaccinate children during hospital stay. Among caregivers of under-vaccinated children, 90.1% reported being comfortable having their children vaccinated while they were sick, if recommended by the healthcare provider. CONCLUSION This pilot study confirmed that hospitalised sick children had substantial missed vaccination opportunities. Addressing these opportunities through concerted actions involving caregivers, healthcare providers and healthcare systems can improve overall vaccination coverage.
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Affiliation(s)
- Nicholas Albaugh
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Joseph Mathew
- Pediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, Chandigarh, India
| | - Richa Choudhary
- Pediatrics, Sawai Man Singh Medical College and Hospital, Jaipur, Rajasthan, India
| | - Sadasivan Sitaraman
- Pediatrics, Sawai Man Singh Medical College and Hospital, Jaipur, Rajasthan, India
| | - Anjali Tomar
- Pediatrics, Sawai Man Singh Medical College and Hospital, Jaipur, Rajasthan, India
| | - Ishumeet Kaur Bajwa
- Pediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, Chandigarh, India
| | - Baldeep Dhaliwal
- International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Anita Shet
- International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
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Wagai JN, Rhoda D, Prier M, Trimmer MK, Clary CB, Oteri J, Okposen B, Adeniran A, Danovaro-Holliday C, Cutts F. Implementing WHO guidance on conducting and analysing vaccination coverage cluster surveys: Two examples from Nigeria. PLoS One 2021; 16:e0247415. [PMID: 33635913 PMCID: PMC7909665 DOI: 10.1371/journal.pone.0247415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 02/08/2021] [Indexed: 11/18/2022] Open
Abstract
In 2015, the World Health Organization substantially revised its guidance for vaccination coverage cluster surveys (revisions were finalized in 2018) and has since developed a set of accompanying resources, including definitions for standardized coverage indicators and software (named the Vaccination Coverage Quality Indicators—VCQI) to calculate them.–The current WHO vaccination coverage survey manual was used to design and conduct two nationally representative vaccination coverage surveys in Nigeria–one to assess routine immunization and one to measure post-measles campaign coverage. The primary analysis for both surveys was conducted using VCQI. In this paper, we describe those surveys and highlight some of the analyses that are facilitated by the new resources. In addition to calculating coverage of each vaccine-dose by age group, VCQI analyses provide insight into several indicators of program quality such as crude coverage versus valid doses, vaccination timeliness, missed opportunities for simultaneous vaccination, and, where relevant, vaccination campaign coverage stratified by several parameters, including the number of previous doses received. The VCQI software furnishes several helpful ways to visualize survey results. We show that routine coverage of all vaccines is far below targets in Nigeria and especially low in northeast and northwest zones, which also have highest rates of dropout and missed opportunities for vaccination. Coverage in the 2017 measles campaign was higher and showed less geospatial variation than routine coverage. Nonetheless, substantial improvement in both routine program performance and campaign implementation will be needed to achieve disease control goals.
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Affiliation(s)
| | - Dale Rhoda
- Biostat Global Consulting, Worthington, OH, United States of America
| | - Mary Prier
- Biostat Global Consulting, Worthington, OH, United States of America
| | - Mary Kay Trimmer
- Biostat Global Consulting, Worthington, OH, United States of America
| | - Caitlin B. Clary
- Biostat Global Consulting, Worthington, OH, United States of America
| | - Joseph Oteri
- National Primary Health Care Development Agency, Abuja, Nigeria
| | - Bassey Okposen
- National Primary Health Care Development Agency, Abuja, Nigeria
| | | | | | - Felicity Cutts
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
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Abstract
The current situation, heavily influenced by the ongoing pandemic, puts vaccines back into the spotlight. However, the conventional and traditional vaccines present disadvantages, particularly related to immunogenicity, stability, and storage of the final product. Often, such products require the maintenance of a “cold chain,” impacting the costs, the availability, and the distribution of vaccines. Here, after a recall of the mode of action of vaccines and the types of vaccines currently available, we analyze the past, present, and future of vaccine formulation. The past focuses on conventional formulations, the present discusses the use of nanoparticles for vaccine delivery and as adjuvants, while the future presents microneedle patches as alternative formulation and administration route. Finally, we compare the advantages and disadvantages of injectable solutions, nanovaccines, and microneedles in terms of efficacy, stability, and patient-friendly design. Different approaches to vaccine formulation development, the conventional vaccine formulations from the past, the current development of lipid nanoparticles as vaccines, and the near future microneedles formulations are discussed in this review. ![]()
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Kainga HW, Ssendagire S, Ssanyu JN, Nabukeera S, Namuhani N, Mangen FW. Proportion of children aged 9-59 months reached by the 2017 measles supplementary immunization activity among the children with or without history of measles vaccination in Lilongwe district, Malawi. PLoS One 2021; 16:e0243137. [PMID: 33428640 PMCID: PMC7799760 DOI: 10.1371/journal.pone.0243137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 11/16/2020] [Indexed: 11/19/2022] Open
Abstract
Background The measles Supplementary Immunization Activity (SIA) was implemented in June, 2017 to close immunity gaps by providing an additional opportunity to vaccinate children aged between 9 months and up to 14 years in Lilongwe District, Malawi. This study was conducted to determine the proportion of eligible children that were reached by the 2017 measles SIA among those children with or without history of measles vaccination, and possible reasons for non-vaccination. Methods A cross-sectional survey using mixed methods was conducted. Caretakers of children who were eligible for the 2017 measles SIA were sampled from 19 households from each of the 25 clusters (villages) that were randomly selected in Lilongwe District. A child was taken to have been vaccinated if the caretaker was able to explain when and where the child was vaccinated. Eight Key Informant Interviews (KIIs) were conducted with planners and health care workers who were involved in the implementation of the 2017 measles SIA. Modified Poisson regression was used to examine the association between non-vaccination and child, caretaker and household related factors. A thematic analysis of transcripts from KIIs was also conducted to explore health system factors associated with non-vaccination of eligible children in this study. Results A total of 476 children and their caretakers were surveyed. The median age of the children was 52.0 months. Overall, 41.2% [95% CI 36.8–45.7] of the children included in the study were not vaccinated during the SIA. Only 59.6% of children with previous measles doses received SIA dose; while 77% of those without previous measles vaccination were reached by the SIA. Low birth order, vaccination history under routine services, low level of education among caretakers, unemployment of the household head, younger household head, provision of insufficient information by health authorities about the SIA were significantly associated with non-vaccination among eligible children during the 2017 measles SIA. Qualitative findings revealed strong beliefs against vaccinations, wrong perceptions about the SIA (from caretakers’ perspectives), poor delivery of health education, logistical and human resource challenges as possible reasons for non-vaccination. Conclusion Many children (41%) were left unvaccinated during the SIA and several factors were found to be associated with this finding. The Lilongwe District Health Team should endeavor to optimize routine immunization program; and community mobilization should be intensified as part of SIA activities.
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Affiliation(s)
| | | | | | - Sarah Nabukeera
- Makerere University School of Public Health–Uganda, Kampala, Uganda
| | - Noel Namuhani
- Makerere University School of Public Health–Uganda, Kampala, Uganda
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Portnoy A, Resch SC, Suharlim C, Brenzel L, Menzies NA. What We Do Not Know About the Costs of Immunization Programs in Low- and Middle-Income Countries. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2021; 24:67-69. [PMID: 33431155 PMCID: PMC7813212 DOI: 10.1016/j.jval.2020.08.2097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 05/22/2023]
Abstract
• For many countries, there are limited data on the costs of running immunization services, and even less on the costs of increasing immunization coverage. • When considering different approaches for scaling up coverage, countries and funders need to understand the marginal change in coverage produced, costs of introduction, and how cost and coverage effects change depending on programmatic context. • Costing studies would benefit from improved, systematic reporting and leveraging ongoing program evaluation efforts to collect costing data. Long-term investments in the health system may allow for routine data collection and improved efficiency for budgeting and planning.
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Affiliation(s)
- Allison Portnoy
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Stephen C Resch
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Christian Suharlim
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Management Sciences for Health, Boston, MA, USA
| | | | - Nicolas A Menzies
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
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Muluneh F, Wubetu M, Abate A. Missed Opportunity for Routine Immunization and Its Associated Factors in Gozamen District Health Centers, Northwestern Ethiopia. Glob Pediatr Health 2020; 7:2333794X20981306. [PMID: 33426181 PMCID: PMC7756038 DOI: 10.1177/2333794x20981306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/10/2020] [Accepted: 11/16/2020] [Indexed: 11/16/2022] Open
Abstract
Background. Vaccine- preventable diseases constitute a major cause of morbidity and mortality in children under-5 years of age in Ethiopia and other developing countries. There are limited studies conducted on this aspect in Ethiopia especially in Gozamen district. Objectives. To assess missed opportunity for routine immunization and its associated factors among children aged <24 months in Gozamen district health centers. Methods. Institutional based cross-sectional study exit interview was conducted on 422 mothers with under 2 years old children. Data was collected using the standard World Health Organization's missed opportunity tool. Vaccines examined in this study were BCG, OPV0, OPV1, PCV1, rota 1, penta valant 1, OPV2, PCV2, rota2, pentavalant 2, OPV3, PCV3, IPV, pentavalant 3, and measles vaccine. The vaccination status of the children was assessed by a structured questionnaire based on vaccination cards or mothers/caregiver verbal responses. Binary and multivariable logistic regression analysis were used to identify factors associated with missed opportunities for routine immunization among children aged <24 months. Result. The prevalence of missed opportunity for this study was 74.9% ; major vaccines with high missed opportunity were OPV0 (67.8), BCG (17.3%), and Measles (14%). Home delivery, lack of vaccination center near the village, unable to attend formal education and younger age (0-12 months) were independently associated with missed opportunity for routine immunization. Conclusion. The prevalence of missed opportunities for routine immunization in Gozamen district health centers was high. Health centers should give routine immunization services regularly.
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Affiliation(s)
| | - Muluken Wubetu
- Department of Pharmacy, college of health sciences, Debre Markos University, Debre Markos, Amhara, Ethiopia
| | - Abebe Abate
- Department of Pharmacy, college of health sciences, Debre Markos University, Debre Markos, Amhara, Ethiopia
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Chen Y, Lv H, Liang H, Wang Y, Hu Y. Can vaccination coverage be improved through reducing the missed opportunities for immunization? Results from the evaluation in Zhejiang province, east China. Hum Vaccin Immunother 2020; 17:1483-1489. [PMID: 33180567 DOI: 10.1080/21645515.2020.1829316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND To evaluate the missed opportunities for vaccination (MOV) in Zhejiang province by using the global methodology from World Health Organization (WHO). METHODS Based on the WHO Planning Guide to Reduce Missed Opportunities for Vaccination (MOV) and Methodology for the Assessment of MOV, 33 health facilities from 11 cities in Zhejiang province were selected. For each health facility, exit investigations for 20 caregivers of children aged 0-23 months and knowledge, attitudes, and practices (KAP) surveys for 10 health workers was implemented. A MOV was determined based on the child's age on the date of investigation, eligibility for various vaccines. The prevalence of MOV was calculated and the risk factors of MOV were explored. RESULTS There were 660 completed exit investigations of caregivers of children aged 0-23 months and 330 health worker KAP investigations. Of the 658 children with documented vaccination records, 12.6% were still under-vaccinated. Among these under-vaccinated children, 54.2% still had a MOV. Children's age and their previous vaccination behavior, as well as caregivers' relationship to children and education level had a significant impact on the incidence of MOV. CONCLUSION The high proportions of visits with MOV in Zhejiang province suggested that interventions to reduce MOV in health service settings may be a potential quick win for improving coverage and equity. National immunization programs should explore the tailored efforts to improve health worker practices by making better use of existing health service contacts.
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Affiliation(s)
- Yaping Chen
- Zhejiang Center for Disease Control and Prevention, Institute of Immunization and Prevention, Hangzhou, China
| | - Huakun Lv
- Zhejiang Center for Disease Control and Prevention, Institute of Immunization and Prevention, Hangzhou, China
| | - Hu Liang
- Zhejiang Center for Disease Control and Prevention, Institute of Immunization and Prevention, Hangzhou, China
| | - Ying Wang
- Zhejiang Center for Disease Control and Prevention, Institute of Immunization and Prevention, Hangzhou, China
| | - Yu Hu
- Zhejiang Center for Disease Control and Prevention, Institute of Immunization and Prevention, Hangzhou, China
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Ndwandwe D, Ngcobo NJ, Adamu AA, Nnaji C, Mashunye T, Leufak AM, Cooper S, Uthman OA, Wiysonge CS. Country-Level Assessment of Missed Opportunities for Vaccination in South Africa: Protocol for Multilevel Analysis. JMIR Res Protoc 2020; 9:e16672. [PMID: 32985990 PMCID: PMC7551109 DOI: 10.2196/16672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 04/04/2020] [Accepted: 04/21/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Vaccination is one of the greatest public health interventions of all time. Vaccination coverage in South Africa has shown a steady improvement in reaching the national target. However, while there is progress nationally, there are districts within the country that are below the set target for vaccination coverage. One of the main drivers of suboptimal vaccination coverage is thought to be missed opportunities for vaccination. OBJECTIVE This study aims to understand the magnitude and determinants of missed opportunities for vaccination in South Africa. METHODS The 2016 South African Demographic and Health Survey will be used to conduct multilevel regression analyses to determine individual and contextual factors associated with missed opportunities for vaccination in South Africa. The perspectives of parents attending health care facilities in South Africa will be explored through exit interviews and focus group discussions. Similarly, perspectives of the health care providers will be sought to understand enablers and barriers to vaccination coverage at the facility level. Insights to such factors will aid in designing tailor-made interventions to improve vaccination coverage in South Africa. RESULTS Ethical review submission is planned for October 2020. Data collection is expected to be underway in January 2021. CONCLUSIONS The extent of missed opportunities in South Africa coupled with the associated factors presents an opportunity for efforts to increase uptake in districts where vaccination coverage is below the national target. Population-level data such as those from the 2016 South African Demographic Health Survey will provide an idea of the magnitude of missed opportunities for vaccination in South Africa at the national and subnational levels. The findings of the study will inform national and subnational policy implementation on vaccinations and help to find context-specific interventions to improve vaccination coverage. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/16672.
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Affiliation(s)
- Duduzile Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Ntombenhle J Ngcobo
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Abdu A Adamu
- Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Chukwudi Nnaji
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa.,School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Thandiwe Mashunye
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Arlette M Leufak
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Sara Cooper
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa.,School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Olalekan A Uthman
- Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.,Warwick-Centre for Applied Health Research and Delivery, Division of Health Sciences, University of Warwick Medical School, Coventry, United Kingdom
| | - Charles S Wiysonge
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa.,Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.,School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
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Agrawal A, Kolhapure S, Di Pasquale A, Rai J, Mathur A. Vaccine Hesitancy as a Challenge or Vaccine Confidence as an Opportunity for Childhood Immunisation in India. Infect Dis Ther 2020; 9:421-432. [PMID: 32447713 PMCID: PMC7452967 DOI: 10.1007/s40121-020-00302-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 01/12/2023] Open
Abstract
Vaccines have contributed substantially to decreasing the morbidity and mortality rates of many infectious diseases worldwide. Despite this achievement, an increasing number of parents have adopted hesitant behaviours towards vaccines, delaying or even refusing their administration to children. This has implications not only on individuals but also society in the form of outbreaks for e.g. measles, chicken pox, hepatitis A, etc. A review of the literature was conducted to identify the determinants of vaccine hesitancy (VH) as well as vaccine confidence and link them to challenges and opportunities associated with vaccination in India, safety concerns, doubts about the need for vaccines against uncommon diseases and suspicions towards new vaccines were identified as major vaccine-specific factors of VH. Lack of awareness and limited access to vaccination sites were often reported by hesitant parents. Lastly, socio-economic level, educational level and cultural specificities were contextual factors of VH in India. Controversies and rumours around some vaccines (e.g., human papillomavirus) have profoundly impacted the perception of the risks and benefits of vaccination. Challenges posed by traditions and cultural behaviours, geographical specificities, socio-demographic disparities, the healthcare system and vaccine-specific features are highlighted, and opportunities to improve confidence are identified. To overcome VH and promote vaccination, emphasis should be on improving communication, educating the new generation and creating awareness among the society. Tailoring immunisation programmes as per the needs of specific geographical areas or communities is also important to improve vaccine confidence. Fig. 1 Plain language summary.
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Affiliation(s)
| | | | | | - Jayant Rai
- Medical Affairs Department, GSK, Lucknow, India
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Li AJ, Tabu C, Shendale S, Sergon K, Okoth PO, Mugoya IK, Machekanyanga Z, Onuekwusi IU, Sanderson C, Ogbuanu IU. Assessment of missed opportunities for vaccination in Kenyan health facilities, 2016. PLoS One 2020; 15:e0237913. [PMID: 32817630 PMCID: PMC7440639 DOI: 10.1371/journal.pone.0237913] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 08/05/2020] [Indexed: 11/20/2022] Open
Abstract
Background In November 2016, the Kenya National Vaccines and Immunization Programme conducted an assessment of missed opportunities for vaccination (MOV) using the World Health Organization (WHO) MOV methodology. A MOV includes any contact with health services during which an eligible individual does not receive all the vaccine doses for which he or she is eligible. Methods The MOV assessment in Kenya was conducted in 10 geographically diverse counties, comprising exit interviews with caregivers and knowledge, attitudes, and practices (KAP) surveys with health workers. On the survey dates, which covered a 4-day period in November 2016, all health workers and caregivers visiting the selected health facilities with children <24 months of age were eligible to participate. Health facilities (n = 4 per county) were purposively selected by size, location, ownership, and performance. We calculated the proportion of MOV among children eligible for vaccination and with documented vaccination histories (i.e., from a home-based record or health facility register), and stratified MOV by age and reason for visit. Timeliness of vaccine doses was also calculated. Results We conducted 677 age-eligible children exit interviews and 376 health worker KAP surveys. Of the 558 children with documented vaccination histories, 33% were visiting the health facility for a vaccination visit and 67% were for other reasons. A MOV was seen in 75% (244/324) of children eligible for vaccination with documented vaccination histories, with 57% (186/324) receiving no vaccinations. This included 55% of children visiting for a vaccination visit and 93% visiting for non-vaccination visits. Timeliness for multi-dose vaccine series doses decreased with subsequent doses. Among health workers, 25% (74/291) were unable to correctly identify the national vaccination schedule for vaccines administered during the first year of life. Among health workers who reported administering vaccines as part of their daily work, 39% (55/142) reported that they did not always have the materials they needed for patients seeking immunization services, such as vaccines, syringes, and vaccination recording documents. Conclusions The MOV assessment in Kenya highlighted areas of improvement that could reduce MOV. The results suggest several interventions including standardizing health worker practices, implementing an orientation package for all health workers, and developing a stock management module to reduce stock-outs of vaccines and vaccination-related supplies. To improve vaccination coverage and equity in all counties in Kenya, interventions to reduce MOV should be considered as part of an overall immunization service improvement plan.
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Affiliation(s)
- Anyie J. Li
- ASPPH/CDC Allan Rosenfield Global Health Fellowship and PHI/CDC Global Health Fellowship, Atlanta, GA, United States of America
- Global Immunization Division, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
- * E-mail:
| | - Collins Tabu
- National Vaccines and Immunization Program, Ministry of Health Kenya, Nairobi, Kenya
| | - Stephanie Shendale
- Department of Immunization, Vaccines and Biologicals, World Health Organization, Headquarters, Geneva, Switzerland
| | - Kibet Sergon
- World Health Organization Kenya, Country Office, Nairobi, Kenya
| | | | | | - Zorodzai Machekanyanga
- Inter-Country Support Team (IST)–East and Southern Africa, World Health Organization, Harare, Zimbabwe
| | | | - Colin Sanderson
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Ikechukwu Udo Ogbuanu
- Global Immunization Division, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
- Department of Immunization, Vaccines and Biologicals, World Health Organization, Headquarters, Geneva, Switzerland
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Zameer M, Phillips-White N, Folorunso O, Belt R, Setayesh H, Asghar N, Chandio A. Promoting equity in immunization coverage through supply chain design in Pakistan. Gates Open Res 2020; 4:31. [PMID: 33709056 PMCID: PMC7926263 DOI: 10.12688/gatesopenres.13121.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2020] [Indexed: 11/20/2022] Open
Abstract
To improve equity in immunization coverage, potent immunization products must be available in the communities in which low coverage rates persist. Most supply side investments are focused on replacing or establishing new health facilities to improve access to immunization. However, supply chain design must be improved to ensure that potent vaccines are available at all facilities to promote immunization equity. We used the supply chain design process in Pakistan as an opportunity to conceptualize how supply chains could impact equity outcomes. This paper outlines our approach and key considerations for assessing supply chain design as a contributing factor in achieving equitable delivery of immunization services. We conducted a supply chain analysis based on sub-national supply chain and immunization coverage at district level. Supply chain metrics included cold chain coverage and distances between vaccination sites and storage locations. Immunization coverage metrics included the third-dose diphtheria- tetanus-pertussis (DTP3) vaccination rate and the disparity in DTP3 coverage between urban and rural areas. All metrics were analyzed at the district level. Despite data limitations, triangulation across these metrics provided useful insights into the potential contributions of supply chain to equitable program performance at the district level within each province. Overall, our analysis identified supply chain gaps, highlighted supply chain contributions to program performance and informed future health system investments to prioritize children unreached by immunization services.
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Affiliation(s)
| | | | | | - Rachel Belt
- Gavi, the Vaccine Alliance, Geneva, Switzerland
| | | | - Naeem Asghar
- Expanded Program for Immunization (EPI), Federal Ministry of Health, Islamabad, Pakistan
| | - Arshad Chandio
- Expanded Program for Immunization (EPI), Federal Ministry of Health, Islamabad, Pakistan
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A clinical update on vaccines: focus on determinants of under-immunization and special considerations for adolescents. Curr Opin Pediatr 2020; 32:328-335. [PMID: 32068599 DOI: 10.1097/mop.0000000000000881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW The current article reviews recent literature related to pediatric and adolescent vaccination, specifically focusing on social determinants of under-immunization, expanding adolescent immunization rates, and new recommendations surrounding the meningococcal serotype B vaccine (MenB). RECENT FINDINGS Vaccine refusals and vaccine-preventable diseases have been rising in some parts of the world, and appear to be linked to household factors, such as a family's socioeconomic status. Adolescents have lower immunization rates than younger children. Newer vaccines targeted at adolescents, such as the MenB vaccine, have yet to be widely accepted by pediatric providers, parents, and patients. SUMMARY Pediatric healthcare providers should attempt to increase local immunization rates by vaccinating children at all eligible office visits and utilizing electronic health record decision-support tools. Although the number of families who choose not to vaccinate their children may be rising, providers can be innovative (e.g. incorporate digital vaccine reminder systems) and increase their familiarity with new vaccine recommendations to continue to prevent serious vaccine-preventable diseases.
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Hasan MZ, Dean LT, Kennedy CE, Ahuja A, Rao KD, Gupta S. Social capital and utilization of immunization service: A multilevel analysis in rural Uttar Pradesh, India. SSM Popul Health 2020; 10:100545. [PMID: 32405528 PMCID: PMC7211897 DOI: 10.1016/j.ssmph.2020.100545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 11/25/2022] Open
Abstract
The National Health Policy (2017) of India advocates Universal Health Coverage through inclusive growth, decentralization, and rebuilding a cohesive community through a participatory process. To achieve this goal, understanding social organization, and community relationships - defined as social capital - is critical. This study aimed to explore the influence of individual and community-level social capital on a critical health system performance indicator, three-doses of diphtheria-pertussis-tetanus (DPT3) immunization among 12-59 month children, in rural Uttar Pradesh (UP), India. The analysis is based on a cross-sectional survey from two districts of UP, which included 2239 children 12-59 months of age (level 1) from 1749 households (level 2) nested within 346 communities (level 3). We used multilevel confirmatory factor analysis to generate standardized factor scores of social capital constructs (Organizational Participation, Social Support, Trust and Social Cohesion) of the household heads and mothers both at individual and community level, which were then used in the multilevel logistic regressions to explore the independent and contextual effect of social capital on a child's DPT3 immunization status. The result showed only community-level Social Cohesion of the mothers was associated with a child's DPT3 immunization status (Adjusted odds ratio = 1.25, 95% confidence interval = 1.12-1.54; p = 0.04). Beyond its independent effect on utilization of immunization service, the collective Social Cohesion of the mothers significantly modified the relationship of child age, mother's knowledge of immunization, community wealth, and communities' contact with frontline workers with immunization status of the child. With a strong theoretical underpinning, the result substantially contributes to understanding the individual and contextual predictors of immunization service utilization and further advancing the literature of social capital in India. This study can serve as a starting point to catalyze social capital within the health interventions for achieving wellbeing and the collective development of society.
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Affiliation(s)
- Md Zabir Hasan
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Lorraine T. Dean
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Caitlin E. Kennedy
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Akshay Ahuja
- School of Public Policy at Central European University, Budapest, Hungary
| | - Krishna D. Rao
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Shivam Gupta
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Johri M, Rodgers L, Chandra D, Abou-Rizk C, Nash E, Mathur AK. Implementation fidelity of village health and nutrition days in Hardoi District, Uttar Pradesh, India: a cross-sectional survey. BMC Health Serv Res 2019; 19:756. [PMID: 31655588 PMCID: PMC6815402 DOI: 10.1186/s12913-019-4625-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 10/10/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Village Health and Nutrition Days (VHNDs) are a cornerstone of the Government of India's strategy to provide first-contact primary health care to rural areas. Recent government programmes such as the Janani Suraksha Yojana (JSY) and Mission Indradhanush (MI) have catalysed important changes impacting VHNDs. To learn how VHNDs are currently being delivered, we assessed the fidelity of services provided as compared to government norms in a priority district of Uttar Pradesh. METHODS We fielded a cross-sectional study of VHNDs to provide a snapshot of health services functioning. Process evaluation data were collected via administrative sources, non-participant observation using a standardised form, and structured questionnaires. Questionnaires were designed using a framework to assess implementation fidelity. Key respondents were VHND participants, front-line workers involved in VHND delivery, and VHND non-participants (pregnant women due for antenatal care or children due for vaccination as per administrative records). Results were summarised as counts, frequencies, and proportions. RESULTS In the 30 villages randomly selected for inclusion, 36 VHNDs were scheduled but four (11.1%) were cancelled and one VHND was not surveyed. Vaccination and antenatal care were offered at 96.8% (30/31) and child weighing at 83.9% (26/31) of VHNDs. Other normed services were infrequently provided or completely absent. Health education and promotion were particularly weak; institutional delivery was the only topic discussed in a majority of VHNDs. The true proportion of any serious problem impeding vaccine delivery was 47.2% (17/36), comprising 4 VHND cancellations and 13 VHNDs experiencing vaccine shortages. Of the 13 incidents of vaccine shortage, 11 related to an unexpected global shortage of injectable polio vaccine (IPV). Over the 31 VHNDs, 37.8% (171 of the 452 scheduled beneficiaries) did not participate. Analysis of missed opportunities for vaccination highlighted inaccuracies in beneficiary identification and tracking and demand side-factors. CONCLUSIONS The transformative potential of VHNDs to improve population health is only partially being met. A core subset of high-priority services for antenatal care, institutional delivery, and vaccination associated with high-priority government programmes (JSY, MI) is now being provided quite successfully. Other basic health promotion and prevention services are largely not provided, constituting a critical missed opportunity.
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Affiliation(s)
- Mira Johri
- University of Montreal Hospital Research Centre (CRCHUM), Tour Saint-Antoine, Porte S03-910, 850, rue St-Denis, Montréal, (Québec) H2X 0A9 Canada
- Department of Health Management, Evaluation and Policy, School of Public Health, University of Montreal, Montréal, Québec Canada
| | - Louis Rodgers
- Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Montréal, Québec Canada
| | | | - Cybil Abou-Rizk
- Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Montréal, Québec Canada
| | - Eleanor Nash
- Faculty of Arts and Sciences, University of Montreal, Montréal, Québec Canada
| | - Alok K. Mathur
- Indian Institute of Health Management Research University, Jaipur, India
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Munk C, Portnoy A, Suharlim C, Clarke-Deelder E, Brenzel L, Resch SC, Menzies NA. Systematic review of the costs and effectiveness of interventions to increase infant vaccination coverage in low- and middle-income countries. BMC Health Serv Res 2019; 19:741. [PMID: 31640687 PMCID: PMC6806517 DOI: 10.1186/s12913-019-4468-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 08/27/2019] [Indexed: 11/17/2022] Open
Abstract
Background In recent years, several large studies have assessed the costs of national infant immunization programs, and the results of these studies are used to support planning and budgeting in low- and middle-income countries. However, few studies have addressed the costs and cost-effectiveness of interventions to improve immunization coverage, despite this being a major focus of policy attention. Without this information, countries and international stakeholders have little objective evidence on the efficiency of competing interventions for improving coverage. Methods We conducted a systematic literature review on the costs and cost-effectiveness of interventions to improve immunization coverage in low- and middle-income countries, including both published and unpublished reports. We evaluated the quality of included studies and extracted data on costs and incremental coverage. Where possible, we calculated incremental cost-effectiveness ratios (ICERs) to describe the efficiency of each intervention in increasing coverage. Results A total of 14 out of 41 full text articles reviewed met criteria for inclusion in the final review. Interventions for increasing immunization coverage included demand generation, modified delivery approaches, cash transfer programs, health systems strengthening, and novel technology usage. We observed substantial heterogeneity in costing methods and incompleteness of cost and coverage reporting. Most studies reported increases in coverage following the interventions, with coverage increasing by an average of 23 percentage points post-intervention across studies. ICERs ranged from $0.66 to $161.95 per child vaccinated in 2017 USD. We did not conduct a meta-analysis given the small number of estimates and variety of interventions included. Conclusions There is little quantitative evidence on the costs and cost-effectiveness of interventions for improving immunization coverage, despite this being a major objective for national immunization programs. Efforts to improve the level of costing evidence—such as by integrating cost analysis within implementation studies and trials of immunization scale up—could allow programs to better allocate resources for coverage improvement. Greater adoption of standardized cost reporting methods would also enable the synthesis and use of cost data. Electronic supplementary material The online version of this article (10.1186/s12913-019-4468-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cristina Munk
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Allison Portnoy
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA. .,Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Christian Suharlim
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Emma Clarke-Deelder
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | | | - Stephen C Resch
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Nicolas A Menzies
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Al-Salihi LG, Aakef IR, Al-Shuwaili SJ, Zaki Hadi WM. Primary Health-Care Staff Barriers to Immunization. Indian J Community Med 2019; 44:256-260. [PMID: 31602115 PMCID: PMC6776938 DOI: 10.4103/ijcm.ijcm_14_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Missed opportunities for immunization (MOI) is considered as the most important preventable reason for underimmunization. Health-care workers stand beyond more than half the children's missed opportunities due to gaps in their knowledge, attitudes, and practices (KAP) regarding immunization. Objectives This study assessed immunization staff at primary health-care centers in Baghdad/Al-Karkh for KAP that may lead to MOI. Materials and Methods KAP survey was conducted on field immunization service providers at primary health-care centers in Baghdad/Al-Karkh. Barriers are considered to present whenever scores found <80 in any of KAP. Data were collected using a self-administered structured questionnaire analyzed by SPSS 24. Results Among 217 respondent health professionals, 69 (31.8%) were physicians and 148 (68.2%) were nurses. The studied sample got mean scores for KAP of 84.7 ± 11.4, 71.1 ± 22.7, and 74.8 ± 20.3, respectively. Physicians had higher mean knowledge score compared to nurses (P < 0.05). Both physicians and nurses got mean scores below 80 for both attitudes and practices. Conclusion Attitudes and practices in both physicians and nurses need to be improved to avoid MOI.
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Affiliation(s)
- Layth Ghazi Al-Salihi
- Department of Communicable Disease Control, Directorate of Public Health, Ministry of Health, Baghdad, Iraq
| | - Ihab Raqeeb Aakef
- Department of Communicable Disease Control, Directorate of Public Health, Ministry of Health, Baghdad, Iraq
| | - Saeb Jasim Al-Shuwaili
- Manager of Public Health Section, Medical City Directorate, Ministry of Health, Baghdad, Iraq
| | - Wafaa Mohammed Zaki Hadi
- Manager of Infection Control Unit, Baghdad Teaching Hospital, Medical City Directorate, Ministry of Health, Baghdad, Iraq
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Choudhary M, Perry HB, Solomon R. Effectiveness of a Census-Based Management Information System for Guiding Polio Eradication and Routine Immunization Activities: Evidence from the CORE Group Polio Project in Uttar Pradesh, India. Am J Trop Med Hyg 2019; 101:33-44. [PMID: 31760973 PMCID: PMC6776090 DOI: 10.4269/ajtmh.18-0935] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 05/07/2019] [Indexed: 11/16/2022] Open
Abstract
Census-based management information systems (CB-MISs) bring strength and power to public health programs by providing current information about everyone in the population covered by the program. Such a system has been developed by the CORE Group Polio Project (CGPP) in India. This article assesses the effectiveness of the CGPP CB-MIS in the management of social and behavioral change interventions. It also assesses the feasibility of the CB-MIS for vital events registration. We describe the procedures of the CB-MIS and measure the outcomes of the CGPP by observing the trends of vaccination coverage in CGPP catchment areas over time. We also compute vital statistics from births and deaths registered through the CGPP CB-MIS and compare them with the estimates from the Civil Registration System of India using statistics from India's Sample Registration System in Uttar Pradesh as the "gold standard." The CB-MIS has helped the CGPP to manage its social and behavior change communication interventions effectively, and it has contributed to the increase in polio vaccine coverage facilitated by the CGPP. We also estimate that the CGPP's CB-MIS has registered 86% of births and 98% of infant deaths, a much higher level of registration than has been achieved by the Civil Registration System for the entire state of Uttar Pradesh. The CB-MIS has helped to make it possible for community-based health workers to make behavioral diagnoses of barriers to immunization and to overcome them. The CB-MIS also provides a robust platform for community-based health workers to register vital events.
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Affiliation(s)
| | - Henry B. Perry
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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False Vaccine Contraindications Among Healthcare Providers in Europe: A Short Survey Among Members of The European Society of Pediatric Infectious Diseases. Pediatr Infect Dis J 2019; 38:974-976. [PMID: 31261366 DOI: 10.1097/inf.0000000000002401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Some healthcare providers hold or delay vaccination because of false vaccine contraindications. This study suggests that in 21.4% of scenarios (877/4096) physicians would postpone or contraindicate the vaccination, and 24.2% (237/978) of scenarios would be vaccinated despite the existence of a true contraindication or reason for delay. Addressing false contraindications may result in increasing vaccination uptake in Europe.
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