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1.
BMC Public Health ; 23(1): 912, 2023 05 19.
Artigo em Inglês | MEDLINE | ID: mdl-37208649

RESUMO

BACKGROUND: Vaccination remains the most effective means of reducing the burden of infectious disease among children. It is estimated to prevent between two to three million child deaths annually. However, despite being a successful intervention, basic vaccination coverage remains below the target. About 20 million infants are either under or not fully vaccinated, most of whom are in Sub-Saharan Africa region. In Kenya, the coverage is even lower at 83% than the global average of 86%. The objective of this study is to explore the factors that contribute to low demand or vaccine hesitancy for childhood and adolescent vaccines in Kenya. METHODS: The study used qualitative research design. Key Informant Interviews (KII) was used to obtain information from national and county-level key stakeholders. In-depth Interviews (IDI) was done to collect opinions of caregivers of children 0-23 months and adolescent girls eligible for immunization, and Human papillomavirus (HPV) vaccine respectively. The data was collected at the national level and counties such as Kilifi, Turkana, Nairobi and Kitui. The data was analyzed using thematic content approach. A total of 41 national and county-level immunization officials and caregivers formed the sample. RESULTS: Insufficient knowledge about vaccines, vaccine supply issues, frequent healthcare worker's industrial action, poverty, religious beliefs, inadequate vaccination campaigns, distance to vaccination centers, were identified as factors driving low demand or vaccine hesitancy against routine childhood immunization. While factors driving low uptake of the newly introduced HPV vaccine were reported to include misinformation about the vaccine, rumors that the vaccine is a form of female contraception, the suspicion that the vaccine is free and available only to girls, poor knowledge of cervical cancer and benefits of HPV vaccine. CONCLUSIONS: Rural community sensitization on both routine childhood immunization and HPV vaccine should be key activities post COVID-19 pandemic. Likewise, the use of mainstream and social media outreaches, and vaccine champions could help reduce vaccine hesitancy. The findings are invaluable for informing design of context-specific interventions by national and county-level immunization stakeholders. Further studies on the relationship between attitude towards new vaccines and connection to vaccine hesitancy is necessary.


Assuntos
COVID-19 , Infecções por Papillomavirus , Vacinas contra Papillomavirus , Neoplasias do Colo do Útero , Lactente , Criança , Humanos , Adolescente , Feminino , Quênia/epidemiologia , Pandemias , Vacinação , Infecções por Papillomavirus/prevenção & controle , Vacinas contra Papillomavirus/uso terapêutico , Neoplasias do Colo do Útero/prevenção & controle , Conhecimentos, Atitudes e Prática em Saúde
2.
BMC Med ; 20(1): 130, 2022 04 04.
Artigo em Inglês | MEDLINE | ID: mdl-35369871

RESUMO

BACKGROUND: Hundreds of millions of doses of coronavirus disease 2019 (COVID-19) vaccines have been administered globally, but progress on vaccination varies considerably between countries. We aimed to provide an overall picture of COVID-19 vaccination campaigns, including policy, coverage, and demand of COVID-19 vaccines. METHODS: We conducted a descriptive study of vaccination policy and doses administered data obtained from multiple public sources as of 8 February 2022. We used these data to develop coverage indicators and explore associations of vaccine coverage with socioeconomic and healthcare-related factors. We estimated vaccine demand as numbers of doses required to complete vaccination of countries' target populations according to their national immunization program policies. RESULTS: Messenger RNA and adenovirus vectored vaccines were the most commonly used COVID-19 vaccines in high-income countries, while adenovirus vectored vaccines were the most widely used vaccines worldwide (180 countries). One hundred ninety-two countries have authorized vaccines for the general public, with 40.1% (77/192) targeting individuals over 12 years and 32.3% (62/192) targeting those ≥ 5 years. Forty-eight and 151 countries have started additional-dose and booster-dose vaccination programs, respectively. Globally, there have been 162.1 doses administered per 100 individuals in target populations, with marked inter-region and inter-country heterogeneity. Completed vaccination series coverage ranged from 0.1% to more than 95.0% of country target populations, and numbers of doses administered per 100 individuals in target populations ranged from 0.2 to 308.6. Doses administered per 100 individuals in whole populations correlated with healthcare access and quality index (R2 = 0.59), socio-demographic index (R2 = 0.52), and gross domestic product per capita (R2 = 0.61). At least 6.4 billion doses will be required to complete interim vaccination programs-3.3 billion for primary immunization and 3.1 billion for additional/booster programs. Globally, 0.53 and 0.74 doses per individual in target populations are needed for primary immunization and additional/booster dose programs, respectively. CONCLUSIONS: There is wide country-level disparity and inequity in COVID-19 vaccines rollout, suggesting large gaps in immunity, especially in low-income countries.


Assuntos
Vacinas contra COVID-19 , COVID-19 , COVID-19/epidemiologia , COVID-19/prevenção & controle , Humanos , Programas de Imunização , Políticas , Cobertura Vacinal
3.
BMC Med ; 20(1): 202, 2022 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-35705986

RESUMO

BACKGROUND: Despite large outbreaks in humans seeming improbable for a number of zoonotic pathogens, several pose a concern due to their epidemiological characteristics and evolutionary potential. To enable effective responses to these pathogens in the event that they undergo future emergence, the Coalition for Epidemic Preparedness Innovations is advancing the development of vaccines for several pathogens prioritized by the World Health Organization. A major challenge in this pursuit is anticipating demand for a vaccine stockpile to support outbreak response. METHODS: We developed a modeling framework for outbreak response for emerging zoonoses under three reactive vaccination strategies to assess sustainable vaccine manufacturing needs, vaccine stockpile requirements, and the potential impact of the outbreak response. This framework incorporates geographically variable zoonotic spillover rates, human-to-human transmission, and the implementation of reactive vaccination campaigns in response to disease outbreaks. As proof of concept, we applied the framework to four priority pathogens: Lassa virus, Nipah virus, MERS coronavirus, and Rift Valley virus. RESULTS: Annual vaccine regimen requirements for a population-wide strategy ranged from > 670,000 (95% prediction interval 0-3,630,000) regimens for Lassa virus to 1,190,000 (95% PrI 0-8,480,000) regimens for Rift Valley fever virus, while the regimens required for ring vaccination or targeting healthcare workers (HCWs) were several orders of magnitude lower (between 1/25 and 1/700) than those required by a population-wide strategy. For each pathogen and vaccination strategy, reactive vaccination typically prevented fewer than 10% of cases, because of their presently low R0 values. Targeting HCWs had a higher per-regimen impact than population-wide vaccination. CONCLUSIONS: Our framework provides a flexible methodology for estimating vaccine stockpile needs and the geographic distribution of demand under a range of outbreak response scenarios. Uncertainties in our model estimates highlight several knowledge gaps that need to be addressed to target vulnerable populations more accurately. These include surveillance gaps that mask the true geographic distribution of each pathogen, details of key routes of spillover from animal reservoirs to humans, and the role of human-to-human transmission outside of healthcare settings. In addition, our estimates are based on the current epidemiology of each pathogen, but pathogen evolution could alter vaccine stockpile requirements.


Assuntos
Epidemias , Coronavírus da Síndrome Respiratória do Oriente Médio , Vacinas , Animais , Surtos de Doenças/prevenção & controle , Epidemias/prevenção & controle , Humanos , Zoonoses/epidemiologia , Zoonoses/prevenção & controle
4.
Vaccines (Basel) ; 12(6)2024 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-38932346

RESUMO

Despite efforts to increase childhood vaccination coverage in the Democratic Republic of the Congo (DRC), approximately 20% of infants have not started their routine immunization schedule (zero-dose). The present study aims to evaluate the relative influence of geospatial access to health facilities and caregiver perceptions of vaccines on the vaccination status of children in rural DRC. Pooled data from two consecutive nationwide immunization surveys conducted in 2022 and 2023 were used. Geographic accessibility was assessed based on travel time from households to their nearest health facility using the AccessMod 5 model. Caregiver attitudes to vaccination were assessed using the survey question "How good do you think vaccines are for your child?" We used logistic regression to assess the relationship between geographic accessibility, caregiver attitudes toward vaccination, and their child's vaccination status. Geographic accessibility to health facilities was high in rural DRC, with 88% of the population living within an hour's walk to a health facility. Responding that vaccines are "Bad, Very Bad, or Don't Know" relative to "Very Good" for children was associated with a many-fold increased odds of a zero-dose status (ORs 69.3 [95%CI: 63.4-75.8]) compared to the odds for those living 60+ min from a health facility, relative to <5 min (1.3 [95%CI: 1.1-1.4]). Similar proportions of the population fell into these two at-risk categories. We did not find evidence of an interaction between caregiver attitude toward vaccination and travel time to care. While geographic access to health facilities is crucial, caregiver demand appears to be a more important driver in improving vaccination rates in rural DRC.

5.
Vaccine ; 42 Suppl 4: 125670, 2024 Oct 24.
Artigo em Inglês | MEDLINE | ID: mdl-39198045

RESUMO

BACKGROUND: Although healthcare personnel (HCP) are targeted for influenza vaccination they typically underutilize vaccines especially in low- and middle-income countries. We explored knowledge, attitudes, and practices of HCP about seasonal influenza vaccines (SIV) to identify factors associated with and modifiable barriers to SIV uptake. METHODS: We pooled individual-level data from cross-sectional surveys about SIV conducted among health workers in 12 low- and middle- income countries during 2018-2020 (i.e., Albania, Armenia, Cote d'Ivoire, Kenya, Kyrgyzstan, Lao PDR, Lebanon, Morocco, North Macedonia, Tunisia, Tajikistan, and Uganda). Eleven countries used a standard protocol and questionnaire based on the Health Belief Model to measure perceptions of susceptibility and severity of influenza disease, benefits of, barriers to, and motivators for vaccination. We analyzed attitudes and perceptions among HCP, including acceptance of vaccine for themselves and willingness to recommend vaccines to patients, grouped by the presence/absence of a national influenza vaccination program. Models were adjusted for geographic region. RESULTS: Our analysis included 10,281 HCP from 12 countries representing four of the six World Health Organization regions: African, Eastern Mediterranean, European, and Western Pacific. The sample was distributed across low income (LIC) (3,183, 31 %), lower-middle (LMIC) (4,744, 46 %), and upper-middle income (UMIC) (2,354, 23 %) countries. Half (50 %) of the countries included in the analysis reported SIV use among HCP in both the year of and the year preceding data collection while the remainder had no influenza vaccination program for HCP. Seventy-four percent (6,341) of HCP reported that they would be willing to be vaccinated if the vaccine was provided free of charge. HCP in LICs were willing to pay prices for SIV representing a higher percentage of their country's annual health expenditure per capita (6.26 % [interquartile range, IQR: 3.13-12.52]) compared to HCP in LMICs and UMICs. HCP in countries with no SIV program were also willing to pay a higher percentage for SIV (5.01 % [IQR: 2.24-8.34]) compared to HCP in countries with SIV programs.. Most (85 %) HCP in our analysis would recommend vaccines to their patients, and those who would accept vaccines for themselves were 3 times more likely to recommend vaccines to their patients (OR 3.1 [95 % CI 1·8, 5·2]). CONCLUSION: Increasing uptake of SIV among HCP can amplify positive impacts of vaccination by increasing the likelihood that HCP recommend vaccines to their patients. Successful strategies to achieve increased uptake of vaccines include clear guidance from health authorities, interventions based on behavior change models, and access to vaccine free-of-charge.


Assuntos
Países em Desenvolvimento , Conhecimentos, Atitudes e Prática em Saúde , Pessoal de Saúde , Vacinas contra Influenza , Influenza Humana , Humanos , Vacinas contra Influenza/administração & dosagem , Vacinas contra Influenza/imunologia , Influenza Humana/prevenção & controle , Pessoal de Saúde/psicologia , Pessoal de Saúde/estatística & dados numéricos , Estudos Transversais , Vacinação/estatística & dados numéricos , Vacinação/psicologia , Masculino , Feminino , Adulto , Inquéritos e Questionários , Atitude do Pessoal de Saúde , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Pessoa de Meia-Idade
6.
Vaccine ; 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38879408

RESUMO

Community engagement is vital to the development of people-centered, successful vaccination programs. The diverse Vaccination Acceptance Research Network (VARN) community brings together interdisciplinary professionals from across the immunization ecosystem who play a crucial role in vaccination acceptance, demand, and delivery. Over the course of the VARN2023 conference, researchers and practitioners alike shared ideas and experiences focused on strategies and approaches to building trust between communities and health systems to increase equity in vaccination. Health professionals and community members must have equal value in the design and delivery of community-centered immunization services, while key vaccination decision-makers must also consider community experiences, concerns, and expertise in program design and policymaking. Therefore, strategies for community engagement and cultivating trust with communities are crucial for the success of any immunization program. Furthermore, health workers need additional skills, support, and resources to effectively communicate complex information about immunization, including effective strategies for countering misinformation. This article summarizes three skills-building sessions offered at the VARN2023 conference, focused on human-centered design, motivational interviewing, and engaging with journalists to leverage the voices of communities. These sessions offered practical, evidence-based tools for use across geographic and social settings that can be used by practitioners, researchers, and other stakeholders to increase vaccination demand and uptake in their communities.

7.
Vaccines (Basel) ; 11(5)2023 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-37243052

RESUMO

India implemented the largest COVID-19 vaccination drive in the world, through which it vaccinated the majority of its population. Lessons from the Indian COVID-19 vaccination experience can be invaluable for other LMICs as well as for preparedness for future outbreaks. Our study is designed to explore the factors associated with COVID-19 vaccination coverage in India at the district level. We used data from COVID-19 vaccination in India combined with several other administrative data to create a unique data set that facilitated a spatio-temporal exploratory analysis by uncovering the factors associated with vaccination rates across different vaccination phases and districts. We found evidence that past reported infection rates were positively correlated with COVID-19 vaccination outcomes. Past cumulative COVID-19 deaths as a proportion of district populations were associated with lower COVID-19 vaccination, but the percentage of past reported infection was positively correlated with first-dose COVID-19 vaccination, which might indicate a positive role of higher awareness created by a higher reported infection rate. Districts that on average had a higher population burden per health centre were likely to have lower COVID-19 vaccination rates. Vaccination rates were lower in rural areas relative to urban areas, whereas the association with literacy rate was positive. Districts with a higher percentage of children with complete immunisation were associated with higher COVID-19 vaccination, whereas low vaccination was observed in districts that had higher percentages of wasted children. COVID-19 vaccination was lower among pregnant and lactating women. Higher vaccination was observed among populations with higher blood pressure and hypertension (which were a few of the co-morbidities associated with COVID-19 infection).

8.
SSM Popul Health ; 22: 101384, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37008807

RESUMO

Seasonal influenza vaccination rates remain low, and contribute to preventable influenza cases, hospitalizations, and deaths in the US. While numerous interventions have been implemented to increase vaccine uptake, there is a need to determine which interventions contribute most to vaccine willingness, particularly among age groups with vaccination rates that have plateaued at suboptimal levels. This study aimed to quantify the relative effect of multiple interventions on vaccine willingness to receive influenza vaccine in three age groups using a series of hypothetical situations with different behavioral interventions. We assessed the relative impact of four categories of interventions: source of vaccine messages, type of vaccination messages, vaccination incentives, and ease of vaccine access using a discrete choice experiment. Within each category, we investigated the role of four different attributes to measure their relative contribution to willingness to be vaccinated by removing one option from each of the intervention categories. Among the 1,763 Minnesota residents who volunteered for our study, participants expressed vaccine willingness in over 80% of the scenarios presented. Easy access to drop-in vaccination sites had the greatest impact on vaccine willingness in all age groups. Among the younger age group, small financial incentives also contributed to high vaccine willingness. Our results suggest that public health programs and vaccination campaigns may improve their chances of successfully increasing vaccine willingness if they offer interventions preferred by adults, including facilitating convenient access to vaccination and offering small monetary incentives, particularly for young adults.

9.
Front Public Health ; 11: 1138800, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37361144

RESUMO

Introduction: Vaccine demand creation requires understanding what is driving the uptake of the vaccine. 24 Qualitative research methods are paramount to gaining a localized understanding of behavioral 25 drivers and barriers to vaccine uptake, but they are often underutilized. Methods: This is a qualitative study that 26 used public comments on the Facebook and Twitter posts of the Finnish Institute for Health and 27 Welfare (THL) as data sources to identify behavioral drivers for COVID-19 vaccine uptake in 28 Finland. The participatory data analysis utilized thematic analysis and the Theoretical Domains 29 Framework (TDF). NVIVO was used to assist in the coding process. Results: The greatest number of FB and 30 Twitter comments were linked with six TDF domains: knowledge, environmental context and 31 resources, beliefs in consequences, beliefs in capabilities, social and professional role, and social 32 influences. The domains included 15 themes that were interlinked. The knowledge domain 33 overlapped with all other domains. Discussion: By using public discourse on Facebook and Twitter, and rapid 34 qualitative data analysis methods within a behavioral insight framework, this study adds to the 35 emerging knowledge about behavioral drivers of COVID-19 vaccines that can be used by public 36 health experts to enhance the uptake of vaccines during future pandemics and epidemics.


Assuntos
COVID-19 , Mídias Sociais , Vacinas , Humanos , Vacinas contra COVID-19 , Finlândia , COVID-19/prevenção & controle , Pesquisa Qualitativa
10.
BMC Proc ; 17(Suppl 7): 14, 2023 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-37438751

RESUMO

BACKGROUND: In 2021, twenty out of twenty-one countries in the Eastern and Southern Africa (ESA) region introduced COVID-19 vaccines. With variable willingness to uptake vaccines across countries, the aim of the present study was to better understand factors that impact behavioral and social drivers of vaccination (BeSD). Using the theory-based "increasing vaccination model", the drivers Thinking & Feeling, Social Processes, Motivation, and Practical Issues were adapted to the COVID-19 context and utilized in a cross-country assessment. METHODS: Data was collected on 27.240 health workers in Kenya, Malawi, Mozambique, South Africa and South Sudan. This was done by administering a survey of seven target questions via the UNICEF Internet of Good Things (IoGT) online platform between February and August 2021. RESULTS: Findings showed a gap between perceived importance and trust in vaccines: Most health workers thought Covid-19 vaccination was very important for their health, while less than 30% trusted it very much. The pro-vaccination social and work norm was not well established since almost 66% of all respondents would take the vaccine if recommended to them, but only 49% thought most adults would, and only 48% thought their co-workers would. Access was highlighted as a crucial barrier, with less than a quarter reporting that accessing vaccination services for themselves would be very easy. Women exhibited slightly lower scores than men across the board. When testing the associations between drivers in Kenya and South Africa, it appears that when target interventions are developed for specific age groups, social norms become the main drivers of intention to get vaccinated. CONCLUSIONS: The present study revealed various key relations with demographic variables that would help immunization programmes and implementing partners to develop targeted interventions. First, there is a serious gap between perceived importance of COVID-19 vaccines and how much trust people in them. Second, problems with access are still rather serious and solving this would strongly benefit those who demand a vaccine, Third, the role of social norms is the most important predictor of willingness when considering age differences.

11.
Vaccine X ; 14: 100341, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37519776

RESUMO

Introduction: Childhood vaccination is an effective intervention for lowering the burden of infectious disease. Vaccine coverage has increased globally, but vaccine hesitancy and refusal threatens these gains. The 5C psychological antecedents of vaccination ("5C") provides a validated measure of "vaccine hesitancy or confidence" to assess individual thoughts and behaviors behind vaccination. We investigated population-level factors that contributed to high and sustained vaccination coverage in Zambia, Nepal, and Senegal, and alignment with the 5Cs. Methods: Data was collected in the larger Exemplars in Vaccine Delivery study, from focus group discussions (FDGs) and key informant interviews (KIIs) at the national, regional, district, health facility, and community levels of health systems in Zambia, Nepal, and Senegal. We assessed the demand environment, as relayed by participants, and identified interventions reported as successful for demand generation, then retroactively aligned the interventions with the 5C constructs. Results: Demand was positively correlated with high confidence and collective responsibility. Psychological constraints sometimes impacted demand. Physical constraints created barriers in some communities, particularly difficult to access (i.e., mountainous). Occasionally, physical constraints did not affect vaccination behavior - parents believed the benefits of vaccination worth pursuing. Factors negatively correlated with demand and intent, complacency and calculation, had limited impact. Critical interventions were: targeted and tailored health education activities (media partnerships, school outreach); community engagement; community ownership; and community involvement (community health workers, leaders, religious figures). Conclusion: We found similar interventions used to generate demand, with strategies aligned with the 5C constructs. Categorizing interventions by drivers of demand may help strategic planning and the division of resources; decision makers may choose to implement our suggested interventions. Assessing the 5Cs allows decision-makers to operationalize demand generation into concrete interventions and policies, and determine the individual impact of these constructs on the population and focus efforts on interventions tailored to a specific need.

12.
JMIR Res Protoc ; 12: e44664, 2023 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-37071828

RESUMO

BACKGROUND: COVID-19 was characterized by the World Health Organization (WHO) as a pandemic in 2020. Papua New Guinea (PNG) has remained on high alert ever since, and its National Control Centre continues to coordinate national preparedness and response measures, guided by its Emergency Preparedness and Response Plan for COVID-19. As part of the WHO and the Global Alliance for Vaccines and Immunization's COVID-19 Vaccines Global Access (COVAX) program, PNG received several shipments of COVID-19 vaccine doses. A nationwide vaccine rollout for COVID-19 was initiated in PNG in May 2021. Despite the availability of vaccines and the capacity of health systems to vaccinate frontline workers and community members, including high-risk groups, there are still critical issues related to vaccine safety, confidence, and acceptance to ensure the effectiveness of the COVID-19 vaccination campaign. Evidence from studies on COVID-19 vaccine acceptance and demand in low- and middle-income countries (LMICs) suggests that sociocultural characteristics of the community and the behaviors of different vaccine stakeholders, including vaccine recipients, vaccine providers, and policymakers, determine the effectiveness of vaccination interventions or strategies. OBJECTIVE: This study will examine sociocultural determinants of anticipated acceptance of the COVID-19 vaccine in urban and rural areas of different regions in PNG and health care providers' views on vaccine acceptance. METHODS: The study design uses a mixed methods approach in PNG's coastal and highlands regions. The first research activity will use a qualitative methodology with an epistemological foundation based on constructivism. This design elicits and listens to community members' accounts of ways culture is a rich resource that provides meaning to the COVID-19 pandemic; the design also measures adherence to niupela pasin ("new normal" in Tok Pidgin) and vaccination acceptance. The second activity will be a cross-sectional survey to assess the distribution of features of vaccine acceptance, priorities, and practices. The third activity will be in-depth interviews of health care providers actively involved in either COVID-19 clinical management or public health-related pandemic control activities. RESULTS: The project proposal has been reviewed and approved by the Medical Research Advisory Committee of Papua New Guinea. Qualitative data collection started in December 2022, and the survey will begin in May 2023. The findings will be disseminated to the participating communities later this year, followed by publication. CONCLUSIONS: The proposed research on community views and experiences concerning sociocultural and behavioral features of acceptance of the vaccine will provide a better understanding of communication and education needs for vaccine action for COVID-19 control in PNG and other LMICs. The research also considers the influence of health care providers' and policy makers' roles in the awareness and use of the COVID-19 vaccine. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/44664.

13.
Pan Afr Med J ; 40(Suppl 1): 10, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-36157555

RESUMO

Introduction: This rapid qualitative assessment aimed to understand factors associated with persistent low vaccination demand and uptake, and recommendations to improve health facility-based childhood immunization services in Sokoto State, Nigeria. Methods: In 2017, 20 focus group discussions and 16 in-depth interviews were conducted with administrative personnel, healthcare workers, caregivers, and community influencers across three local government areas in Sokoto state, Northwest Nigeria. Participants were purposefully selected to capture a range of perspectives regarding access to health services, campaign- and facility-based immunizations, confidence in immunizations, and recommendations to improve childhood immunization uptake. Results: One hundred and ninety-three individuals participated in the assessment. Commonly reported barriers to receiving childhood immunizations include: inadequacy of health services to meet community needs, preference for campaign vs. facility-based immunizations, the negative influence of rumors and misinformation, and opposition to vaccines among male heads of households. Recommendations to improve uptake of childhood immunizations include: improving immunization service delivery in health facilities, involving community leaders in building demand for immunization, and providing access to free health services and non-cash incentives. Conclusion: Rapid assessment results highlight community, facility, and administrative barriers associated with low demand for and uptake of health facility-based childhood immunizations and offer recommendations to improve immunization services in Sokoto state, Nigeria. Findings demonstrate the persistence of service and supply side barriers such as infrastructure and personnel issues, but also highlight the influence of behavioral factors such as low prioritization of receiving childhood immunizations, misinformation, and gender dynamics on whether communities accept or seek out immunization services.


Assuntos
Vacinação , Vacinas , Instalações de Saúde , Humanos , Imunização , Programas de Imunização , Masculino , Nigéria
14.
Hum Vaccin Immunother ; 17(7): 2001-2007, 2021 07 03.
Artigo em Inglês | MEDLINE | ID: mdl-33534626

RESUMO

Since 2014, the World Health Organization (WHO) member states have been annually reporting vaccine hesitancy reasons, using the WHO/UNICEF Joint Reporting Form (JRF). The Vaccine Hesitancy Matrix (VHM), developed by a WHO strategic advisory group of experts, can serve as an important tool to categorize vaccine hesitancy reasons reported in the JRF. We aimed to describe the reasons for vaccine hesitancy reported globally from 2014 to 2017 to ascertain trends over time and understand the comparability of using the VHM to classify hesitancy reasons from 2014 to 2016 based on previously published literature. We conducted a quantitative content analysis to code and categorize vaccine hesitancy reasons reported in the JRF from 2014 to 2017. Vaccine hesitancy trends were consistent from 2014 to 2017, where vaccine hesitancy reasons were mainly related to "individual and group level influences" (59%) followed by "contextual influences" (25%), and "vaccine- or vaccination-specific issues" (16%). Comparability of our approach to categorize vaccine hesitancy to the previously published JRF data showed that results were mostly but not entirely consistent. Major differences in categorizing vaccine hesitancy were noted between two specific reasons - "experience with past vaccination" (under "individual and group influences") and "risk/benefit- scientific evidence" (under "vaccine and vaccination-specific issues"); this was usually due to lack of clear definitions in some sub-categories and generic responses reported in the JRF. The JRF hesitancy module may benefit from modifications to improve the data quality. Understanding global vaccine hesitancy is crucial and JRF can serve as an important tool, especially with the potential introduction of a COVID-19 vaccine.


Assuntos
COVID-19 , Vacinas , Vacinas contra COVID-19 , Humanos , SARS-CoV-2 , Nações Unidas , Vacinação , Organização Mundial da Saúde
15.
J Infect Dev Ctries ; 15(10): 1388-1395, 2021 10 31.
Artigo em Inglês | MEDLINE | ID: mdl-34780360

RESUMO

INTRODUCTION: Immunization, as a process of fighting against the COVID-19, has gained important research appeal, but very limited endeavor has been paid for vaccine behavioral studies in underdeveloped and developing countries. This study explores the vaccine demand, hesitancy, and nationalism as well as vaccine acceptance and domestic vaccine preference among young adults in Bangladesh. METHODOLOGY: This quantitative study followed the snowball sampling technique and collected responses from 1,018 individuals from various social media platforms. The analysis covered both descriptive and inferential statistics including chi-square, F-statistic, and logistic regression. RESULTS: The findings of the fully-adjusted regression model suggest that the individuals who had more vaccine demand were 3.29 times (95% confidence interval = 2.39-4.54; p < 0.001) higher to accept vaccine compared to those who had no vaccine demand. Conversely, vaccine hesitancy was negatively associated with vaccine acceptance. Here, the odds ratio was found 0.70 (95% confidence interval = 0.62-0.80; p < 0.001), which means that those who had higher vaccine hesitancy were about 30% less likely to accept vaccines than those who had no hesitancy. In addition, the persons who had vaccine nationalism were 1.75 times (95% confidence interval = 1.62-1.88; p < 0.001) more prone to prefer domestic vaccine. CONCLUSIONS: This study suggests that policymakers may take initiatives for making people aware and knowledgeable about the severity and vulnerability to specific health threats. In this concern, perception and efficacy-increasing programs may take part in increasing protection motivation behaviors like vaccine acceptance and (domestic) vaccine preference.


Assuntos
Atitude Frente a Saúde , Vacinas contra COVID-19/administração & dosagem , Conhecimentos, Atitudes e Prática em Saúde , Motivação , Aceitação pelo Paciente de Cuidados de Saúde , Vacinação/psicologia , Adolescente , Bangladesh , Estudos Transversais , Feminino , Humanos , Masculino , População Rural/estatística & dados numéricos , SARS-CoV-2/patogenicidade , Inquéritos e Questionários , População Urbana/estatística & dados numéricos , Recusa de Vacinação/psicologia , Adulto Jovem
16.
Expert Rev Vaccines ; 20(5): 601-610, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33792476

RESUMO

OBJECTIVES: Seasonal influenza vaccine coverage remains low in China due to possible influenza vaccine hesitancy (IVH) and practical issues. We sought to investigate IVH and its determinants among children's guardians and the elderly for a better understanding of the situation and for future intervention. METHODS: We performed two cross-sectional studies to identify the profiles and determinants of IVH using stratified cluster random sampling in an eastern China province in 2019. RESULTS: Of the 1564 guardians and 522 elders, 43.2% (95%CI: 40.4-46.0%) of guardians and 33.5% of elders (95%CI: 29.5-37.6%) had IVH. 'From rural area' (odds ratio: 1.36), 'don't know government recommendation for flu vaccination' (1.39), 'don't know flu vaccine is vaccinated annually' (1.93), and 'family members (0.22), friends and neighbors had positive attitude toward flu vaccine' (0.58) were related factors of the guardians' IVH. 'Aged 70-79 years' (0.46), 'had flu before' (0.35) and 'once had been vaccinated' (0.42) were related to the elderly's IVH. CONCLUSION: Poor awareness of influenza and vaccination, relatives' negative/positive attitude, lack of government recommendations, anxiety about vaccine quality, and practical issues such as short supply are related to IVH in China. Precision education aimed at hesitancy in wider groups is anticipated to increase vaccine confidence and coverage in influenza-vulnerable groups.


Assuntos
Vacinas contra Influenza , Influenza Humana , Idoso , Criança , China/epidemiologia , Estudos Transversais , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Influenza Humana/prevenção & controle , Estações do Ano , Vacinação , Hesitação Vacinal
17.
Vaccines (Basel) ; 9(11)2021 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-34835162

RESUMO

BACKGROUND: Vaccines are among the most effective and cost-efficient public health interventions for promoting child health. However, uptake is considerably affected by vaccine hesitancy. An example is Malawi, with a decline in second vaccine doses and the highest cervical cancer incidence and mortality rate in Sub-Saharan Africa. Understanding vaccine hesitancy is especially important when new vaccines are introduced. This study explores factors contributing to vaccine hesitancy for routine childhood immunization and the human papillomavirus vaccine in Malawi. METHODS: The study used a cross-sectional survey design targeting caregivers of children under five years old and adolescent girls. The sample population was derived using three inclusion criteria: one district with low vaccine uptake (Dowa), one district with high vaccine uptake (Salima), and one district where human papillomavirus vaccine was piloted earlier (Zomba). A convenience sample of one primary and one secondary health facility was selected within each district, and participants were systematically included (n = 600). The measures were based on 5C scale for measuring vaccine hesitancy. Multiple regression analyses were performed to explore vaccination intention predictors. RESULTS: Confidence in vaccine safety was the strongest predictor of routine childhood immunization, followed by constraints due to everyday stress. Caregivers had lower confidence in vaccine safety and efficacy when they believed rumors and misinformation and were unemployed. Confidence was higher for those who had more trust in healthcare workers. Age, gender, religion, education, employment, belief in rumors, and trust in healthcare workers were considered predictors of vaccination intention. A husband's positive attitude (approval) increased childhood vaccination intention. For human papillomavirus, vaccination intentions were higher for those with lower education, more trust in healthcare workers, lower complacency, and a lower tendency toward calculating the benefits and risks of vaccination. Knowledge of human papillomavirus did not increase vaccination intention, but the need to attain a husband's approval did. Being a young adult and unemployed increased belief in rumors, while trust in healthcare workers reduced the belief. CONCLUSIONS: This study provides good insights into the drivers of vaccine hesitancy across different contexts in Malawi. However, further studies are necessary to understand low risk perception among elderly people and the declining trend in second vaccine doses.

18.
Hum Vaccin Immunother ; 17(4): 1211-1222, 2021 04 03.
Artigo em Inglês | MEDLINE | ID: mdl-32966146

RESUMO

The World Health Organization (WHO) recommends antenatal influenza vaccination (AIV) for pregnant women at any stage of pregnancy. This study assessed fundamental aspects of AIV acceptance and demand among key stakeholders in urban Pune, India. Semi-structured interviews for rapid ethnographic assessment of AIV-related awareness, priorities, and practices were used to study clinicians and their communities of practice. A qualitative survey was conducted among 16 private clinicians providing antenatal care (ANC) in slum and middle-class areas of Pune. Following the survey, clinicians were informed about authoritative AIV recommendations. A qualitative community survey was also conducted with 60 women aged 20-35 years and 30 spouses from the same slum and middle-class practice areas of the ANC providers. Subsequently, a second clinician survey was conducted to assess changes in clinicians' awareness, priority, and vaccination practice. After this interview, clinicians were informed of community survey findings. Most community respondents were unaware of AIV, in contrast with well-known and widely used antenatal tetanus vaccination. They expressed confidence in vaccines and trust in the clinicians. Clinicians' advice was reportedly the most important determinant of community vaccine acceptance. Clinicians were confident of the safety of AIV and they anticipated patients' acceptance if recommended. The second clinician interview showed increased awareness of AIV policy, but clinicians were more skeptical about the severity of maternal influenza in their practice. Our findings indicate community acceptance though not demand for AIV. We recommend five essential elements for vaccination program strategies to improve coverage with AIV and other ANC vaccines.


Assuntos
Vacinas contra Influenza , Influenza Humana , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Índia , Aceitação pelo Paciente de Cuidados de Saúde , Gravidez , Cuidado Pré-Natal , Vacinação
19.
Vaccine ; 36(31): 4687-4692, 2018 07 25.
Artigo em Inglês | MEDLINE | ID: mdl-29945834

RESUMO

INTRODUCTION: Due to regular vaccine preventable disease outbreaks and sub-optimal immunisation uptake in the London borough of Hackney, home to the largest Charedi Orthodox Jewish community in Europe, it was decided, in consultation with the community, to implement the WHO Tailoring Immunization Programmes approach (TIP). DESIGN: The WHO Tailoring Immunization Programmes (TIP) approach was used. TIP provides a framework based on behavioural insights methodology to identify populations susceptible to vaccine preventable diseases, diagnose supply and demand side barriers and enablers to vaccination and recommend evidence-informed responses to improve vaccination coverage. RESULTS: The results of the formative research and behavioural analysis challenged the assumption that a cultural or religious anti-vaccination sentiment existed within the community. Critical issues related to access to and convenience of immunisation services. Service providers in the area have challenges due to having to deliver immunisation services to the large numbers of children without additional resource. Where mothers were choosing to delay or refuse vaccinations their reasons were broadly similar to the wider population. The behavioural analysis identified potential categorisation of subgroups within the community enabling a more tailored approach to addressing concerns and meeting parents' needs. CONCLUSION: The TIP approach was an effective way of investigating factors linked to sub-optimal immunisation within the Charedi community. The use of behavioural insights enabled the categorisation of subgroups so that more targeted interventions could be developed. The comprehensive stakeholder engagement which is a key pillar of the TIP approach ensured a deeper understanding of the barriers and enablers to vaccination as well as increasing the level of ownership in the community. TIP should be considered as a useful approach to identify main facilitators and barriers to vaccination in communities with suboptimal immunisation uptake.


Assuntos
Esquemas de Imunização , Aceitação pelo Paciente de Cuidados de Saúde , Cobertura Vacinal , Vacinação/psicologia , Vacinas/administração & dosagem , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Judeus , Londres , Masculino , Pais , Inquéritos e Questionários
20.
Vaccine ; 36(11): 1509-1515, 2018 03 07.
Artigo em Inglês | MEDLINE | ID: mdl-29287678

RESUMO

INTRODUCTION: The WHO Regional Office for Europe developed the Guide to tailoring immunization programmes (TIP), offering countries a process through which to diagnose barriers and motivators to vaccination in susceptible low vaccination coverage and design tailored interventions. A review of TIP implementation was conducted in the European Region. MATERIAL AND METHODS: The review was conducted during June to December 2016 by an external review committee and was based on visits in Bulgaria, Lithuania, Sweden and the United Kingdom that had conducted a TIP project; review of national and regional TIP documents and an online survey of the Member States in the WHO European Region that had not conducted a TIP project. A review committee workshop was held to formulate conclusions and recommendations. RESULTS: The review found the most commonly cited strengths of the TIP approach to be the social science research as well as the interdisciplinary approach and community engagement, enhancing the ability of programmes to "listen" and learn, to gain an understanding of community and individual perspectives. National immunization managers in the Region are generally aware that TIP exists and that there is strong demand for the type of research it addresses. Further work is needed to assist countries move towards implementable strategies based on the TIP findings, supported by an emphasis on enhanced local ownership; integrated diagnostic and intervention design; and follow-up meetings, advocacy and incentives for decision-makers to implement and invest in strategies. CONCLUSIONS: Understanding the perspectives of susceptible and low-coverage populations is crucial to improving immunization programmes. TIP provides a framework that facilitated this in four countries. In the future, the purpose of TIP should go beyond identification of susceptible groups and diagnosis of challenges and ensure a stronger focus on the design of strategies and appropriate and effective interventions to ensure long-term change.


Assuntos
Programas de Imunização , Vigilância em Saúde Pública , Vacinação , Organização Mundial da Saúde , Comitês Consultivos , Necessidades e Demandas de Serviços de Saúde , Humanos , Programas de Imunização/organização & administração , Programas de Imunização/estatística & dados numéricos , Internet , Inquéritos e Questionários , Vacinação/métodos , Vacinação/estatística & dados numéricos , Cobertura Vacinal , Vacinas
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