Vaccine refusal - what we need to know

A qualitative assessment of influenza vaccine uptake among children in Kenya

Background

Influenza is a significant contributor to acute respiratory infections (ARI), and children < 5 years are at increased risk of severe influenza disease. In Kenya the influenza vaccine is not included in the Kenya Expanded Programme on Immunization (KEPI). To inform roll-out of a national influenza vaccination program, we implemented an influenza vaccine demonstration project in Nakuru and Mombasa counties in Kenya from 2019 to 2021 and set out to establish factors driving influenza vaccine acceptance and hesitancy among caregivers of children aged 6-23 months.

Methods

Using semi-structured questionnaires, we conducted eight focus group discussions among community members and twelve key informant interviews among healthcare workers to elicit both lay and expert opinions. Thematic analysis of the interviews was conducted using the World Health Organization's "3 Cs" model of vaccine hesitancy to determine reasons for acceptance or hesitancy of the influenza vaccine.

Results

The influenza vaccine was well received among community members and healthcare workers though concerns were raised. Vaccine hesitancy was fuelled by misconceptions about reasons for introducing the vaccine (confidence), perceptions that influenza was not a serious disease (complacency) and administrative fees required at some facilities (convenience). Despite the use of various advocacy, communication and social mobilisation strategies targeted at educating the community on the influenza disease and importance of vaccination, there remained a perception of inadequate reach of the sensitization among some community members. Contextual factors such as the COVID-19 pandemic affected uptake, and parents expressed concern over the growing number of vaccines recommended for children.

Conclusion

Despite lingering concerns, caregivers had their children vaccinated indicating that vaccine hesitancy exists, even among those who accepted the vaccine for their children. Efforts targeted at increasing confidence in and reducing misconceptions towards vaccines through effective communication strategies, are likely to lead to increased vaccine uptake.

[Brazilian Ministry of Health strategy to increase vaccination coverage at bordersEstrategia del Ministerio de Salud de Brasil para aumentar las tasas de cobertura de vacunación en las fronteras]

Objective

Evaluate the implementation of the Ministry of Health's "Action Plan: Border Vaccination Strategy - Agenda 2022" in the Brazil's 33 twin cities and evaluate the increase in the country's vaccination coverage (VC).

Methodology

Pre-post community clinical trial. Implementation of the strategy was analyzed, and pre- and post-intervention VC were compared in two stages: P1 (pre-intervention) and P2 (post-intervention). Based on statistical analyses of P1 and P2 coverage, calculations were made of municipal averages, standard deviation, and difference in VC between the two periods.

Results

Integration was observed between the primary health care (PHC), surveillance, immunization, and special indigenous health district (DSEI) teams, although there were difficulties, for example, in relation to migratory flows. While immigration flows present challenges in the areas of immunization, PHC, and DSEI, the difficulties are compounded by the polarization of these services, which hinders intersectoral integration. After carrying out the workshops, a total of 50 977 doses were administered in the general population in the 33 twin cities. There was an increase in vaccination coverage in children up to 1 year of age in the locations evaluated after the intervention, which may be relevant in terms of increasing VC in Brazil.

Conclusion

There was an increase in vaccination coverage in children up to 1 year of age in the locations evaluated after the intervention, helping to increase VC in Brazil.

Vaccine Hesitancy in Central Switzerland: Identifying and Characterizing Undervaccinated Children in a Pediatric Emergency Department

Vaccinations play an important role in the prevention of potentially fatal diseases. Vaccine hesitancy has become an important problem both in the public discourse and for public health. We aimed to identify and characterize this potentially unvaccinated or incompletely vaccinated group of children presenting to the pediatric emergency department (PED) of the tertiary children's hospital in central Switzerland, a region that has anecdotally been claimed as a hotspot for vaccine hesitancy. All patients presenting to the PED (N = 20,247) between September 2018 and September 2019 were screened for their vaccination status and categorized as incomplete, unvaccinated, or fully vaccinated in a retrospective cohort study. Some 2.6% (n = 526) visits to the PED were not or incompletely vaccinated according to age, or their vaccination status was unknown. Most of the children in the cohort were not critically ill, and the minority had to be hospitalized. Undervaccinated patients were overrepresented in rural areas. Of all cohort visits, 18 (3.4%) patients received opportunistic vaccination in the PED. No cases of vaccine-preventable diseases were observed. In summary, incompletely vaccinated and unvaccinated status was less frequent than initially expected. The PED may play a role in increasing vaccination coverage by providing opportunistic vaccinations.

COVID-19 Vaccine Uptake and Hesitancy in a Latino Agricultural Community

Amid the COVID-19 pandemic, vaccine hesitancy is believed to be among the top global health threats. U.S. Latinos have disproportionately been affected by the pandemic and have higher COVID-19 vaccine hesitancy. This study applied the Vaccine Hesitancy Determinants Matrix to understand COVID-19 vaccine hesitancy in a Latino agricultural community. Surveys were conducted with 180 adults from a Migrant Community Health Center to measure pandemic experiences and hesitancy factors across three categories: individual and group factors, vaccine/vaccination-specific factors, and contextual factors. Approximately 16% of participants reported having tested positive for COVID-19, 90% endorsed loss of income, and 47% reported their mental health was affected. Only 46% received a COVID-19 vaccine. Common individual vaccine hesitancy factors included worry about side effects, worry that vaccines cause infection, and concern that side effects would be worse than the virus. Vaccine/vaccination-specific factors included concern about how quickly COVID-19 vaccines were developed and concern about there being insufficient research on their effectiveness, potential risks, and side effects. Common contextual factors included religious beliefs and political mistrust. Logistic regression results indicated that subjects who tested positive for COVID-19, or had a coworker who tested positive were more likely to get vaccinated. The odds ratio of being vaccinated increased with age. Subjects who endorsed concern that vaccine side effects were worse than the virus were less likely to be vaccinated. Results highlight that there are health literacy gaps among Latino communities such as interpretation of vaccine efficacy and safety to gain a more accurate understanding of side effects.

Vaccination hesitation in children under five years of age: a scoping review

OBJECTIVES

to synthesize scientific evidence on vaccine hesitancy in children under five years of age and its associated factors.

METHODS

a scoping review, conducted according to the methodological structure proposed by the JBI. Searches were carried out in the Latin American and Caribbean Center on Health Sciences Information, Scientific Electronic Library Online and PubMed databases, including gray literature. Studies in English, Spanish and Portuguese were included, without temporal delimitation. Editorials, studies that did not address vaccine hesitancy in children under five years of age and were not aligned with the objective and research question were excluded. The sample consisted of 18 articles.

RESULTS

misinformation, concern about adverse effects, distrust about efficacy, affliction regarding administration simultaneously, and insecurity in relation to the laboratories were the reported reasons.

CONCLUSIONS

strategies are needed to combat the lack of information about immunobiological agents, as misinformation was the main factor in parents' vaccine hesitation.

Parental acceptability of vaccinating young children against influenza and COVID-19

INTRODUCTION

The struggle against influenza, and more recently against Coronavirus Disease 2019 (COVID-19), relies mostly on protective measures and vaccines. In France, COVID-19 vaccination campaigns include children over 5 years of age, whereas the influenza vaccine is reserved for children and infants older than 6 months with severe chronic disease. The final decision to vaccinate ultimately rests with the parents. This study aimed to explore the opinions of parents regarding COVID-19 and influenza vaccinations, and which factors are likely to influence their decision in order to improve prevention approaches, and thus obtain better vaccination coverage among children.

METHODS AND SURVEY

In this trans-sectional multicenter survey, self-administered questionnaires were sent to parents of children attending 14 childcare institutions over a period of 2 months, December 2021-February 2022. The questionnaire consisted of three sections: the first collected general, social and professional data, the second addressed perceived parental acceptability regarding influenza and COVID-19 vaccinations in healthy children, while the last section explored the main sources of information consulted by the parents regarding vaccinations. Subject's characteristics were described using number and percentages, as they are all categorical variables. Description of answers regarding both influenza and COVID-19 sources of information data were performed. Characteristics of patients answers were described and compared according to intention of vaccine groups.

RESULTS

Among the 343 questionnaires collected, 41.7 % of respondents stated they were supportive of vaccination of their children against influenza and 37 % against COVID-19. Media (Internet, TV and radio) were the most cited sources of information. Incentive factors for both vaccination against influenza and COVID-19 were individual, and collective protection. Limiting factors were fear of side effect and Age of the child. Media was the sole source of information, concerning vaccination against influenza for 59 % non-graduates and 28 % of participants having a higher education level, and respectively 49 % and 19 % for vaccination against COVID-19. The acceptability rate was influenced by the level of education and the sources of information.

DISCUSSION AND CONCLUSION

About 40 % of the parents were supportive of children's vaccinations against COVID-19 and influenza respectively (37 % and 42 %) in order to protect the vulnerable people around them. The media influences the decision to vaccinate especially when the level of education is low.

A taxonomy of anti-vaccination arguments from a systematic literature review and text modelling

The proliferation of anti-vaccination arguments is a threat to the success of many immunization programmes. Effective rebuttal of contrarian arguments requires an approach that goes beyond addressing flaws in the arguments, by also considering the attitude roots-that is, the underlying psychological attributes driving a person's belief-of opposition to vaccines. Here, through a pre-registered systematic literature review of 152 scientific articles and thematic analysis of anti-vaccination arguments, we developed a hierarchical taxonomy that relates common arguments and themes to 11 attitude roots that explain why an individual might express opposition to vaccination. We further validated our taxonomy on coronavirus disease 2019 anti-vaccination misinformation, through a combination of human coding and machine learning using natural language processing algorithms. Overall, the taxonomy serves as a theoretical framework to link expressed opposition of vaccines to their underlying psychological processes. This enables future work to develop targeted rebuttals and other interventions that address the underlying motives of anti-vaccination arguments.

Temporal and spatial distribution of polio vaccine coverage in Brazil between 1997 and 2021

OBJECTIVE

To analyze the temporal and spatial distribution of polio vaccine coverage in Brazilian states.

METHODS

An ecological time series study was conducted using data from the National Immunization Program Information System. The analyzed period was from 1997 to 2021. Joinpoint software was used to calculate the annual percentage change and average annual percentage change through regressions. QGIS 3.10.7 software was used to construct thematic maps. GeoDa 1.20.0.10 software was used to estimate spatial autocorrelation using the Global Moran's Index and Local Moran's Index.

RESULTS

National vaccine coverage in 1997 was 89.27%, decreasing to 61.32% in 2021. The trend analysis indicated an average annual decrease of 1.5% in polio vaccine coverage in Brazil. Across the country, 17 states showed a statistically significant reduction in the average annual percentage change rate. The highest average reduction rates in vaccine coverage among Brazilian states were observed in Amapá (-3.7%; 95%CI -6.0; -1.4) and Pernambuco (-3.3%; 95%CI -4.0; -2.5). In the spatial analysis, in Moran Global, a positive autocorrelation was identified in the years 2012 to 2021 (p<0.02), with an index value of 0.361, which means that geographically close areas tended to have similar levels of vaccination coverage.

CONCLUSION

There was significant heterogeneity in coverage among states and a strong decrease trend in vaccination rates, which could facilitate the circulation of the poliovirus and pose a threat to the susceptible population.

Strategies for Working With Parents With Vaccination Hesitancy

The purpose of this article is to provide an overview of effective strategies for working with parents' vaccination hesitancy or refusal. An overview of historical and current trends in vaccination hesitancy and factors that contribute to and strategies for addressing vaccine hesitancy are discussed. This includes an emphasis on the critical role played by health care providers, as trusted advisors and a primary source of health care information, in encouraging vaccine acceptance. Legal and ethical implications are also considered. Vaccination hesitancy strategies are most effective if they are timely, multifaceted, and collaborative.

National Vaccine Coverage Survey 2020: methods and operational aspects

OBJECTIVE

The national vaccination coverage survey on full vaccination at 12 and 24 months of age was carried out to investigate drops in coverage as of 2016.

METHODS

A sample of 37,836 live births from the 2017 or 2018 cohorts living in capital cities, the Federal District, and 12 inner cities with 100 thousand inhabitants were followed for the first 24 months through vaccine record cards. Census tracts stratified according to socioeconomic levels had the same number of children included in each stratum. Coverage for each vaccine, full vaccination at 12 and 24 months and number of doses administered, valid and timely, were calculated. Family, maternal and child factors associated with coverage were surveyed. The reasons for not vaccinating analyzed were: medical contraindications, access difficulties, problems with the program, and vaccine hesitancy.

RESULTS

Preliminary results showed that less than 1% of children were not vaccinated, full coverage was less than 75% at all capitals and the Federal District, vaccines requiring more than one dose progressively lost coverage, and there were inequalities among socioeconomic strata, favorable to the highest level in some cities and to the lowest in others.

CONCLUSION

There was an actual reduction in full vaccination in all capitals and the Federal District for children born in 2017 and 2018, showing a deteriorating implementation of the National Immunization Program from 2017 to 2019. The survey did not measure the impacts of the COVID-19 pandemic, which may have further reduced vaccination coverage.

Spatial behavior of hepatitis A, MMR, and varicella vaccination coverage in the state of Minas Gerais, 2020

OBJECTIVE

To analyze the spatial behavior of hepatitis A, measles, mumps, and rubella (MMR), and varicella vaccination coverage in children and its relationship with socioeconomic determinants in the state of Minas Gerais.

METHODS

This ecological study investigated records of doses administered to children, extracted from the Immunization Information System of 853 municipalities in Minas Gerais, in 2020. We analyzed the vaccination coverage and socioeconomic factors. Spatial scan statistics were used to identify spatial clusters and measure the relative risk based on the vaccination coverage indicator and the Bivariate Moran Index, and thus detect socioeconomic factors correlated with the spatial distribution of vaccination. We used the cartographic base of the state and its municipalities and the ArcGIS and SPSS software programs.

RESULTS

Hepatitis A (89.0%), MMR (75.7%), and varicella (89.0%) showed low vaccination coverage. All vaccines analyzed had significant clusters. The clusters most likely to vaccinate their population were mainly located in the Central, Midwest, South Central, and Northwest regions, while the least likely were in the North, Northeast, and Triângulo do Sul regions. The municipal human development index, urbanization rate, and gross domestic product were spatially dependent on vaccination coverage.

CONCLUSIONS

The spatial behavior of hepatitis A, MMR, and varicella vaccination coverage is heterogeneous and associated with socioeconomic factors. We emphasize that vaccination records require attention and should be continuously monitored to improve the quality of information used in services and research.

Yellow fever vaccine hesitancy and its relationship with contextual, individual, or group influences and vaccine-specific issues: a scoping review

Vaccine hesitancy is a phenomenon with the potential to reduce vaccination coverage rates, as observed with the yellow fever vaccine (YFV), leading to epidemics and the reintroduction of controlled immunopreventable diseases. This study, together with the scientific literature, aims to map the relationship among the lack of information, vaccine safety and adverse events, and vaccine hesitancy concerning YFV. A scoping review was conducted in the Virtual Health Library (VHL), National Library of Medicine (PubMed), SCOPUS, Embase, and Web of Science databases, using controlled (DeCS/MeSH) and uncontrolled descriptors. In this work, we selected eleven articles, published in English, Spanish, and Portuguese, with no time limits, which met the inclusion criteria. False information, inadequate knowledge about the immunizer, lack of time to take a vaccination, acceptance of the vaccine, vaccine safety, and fear of adverse events were related to vaccine hesitancy. This study reinforces the importance of access to adequate information, provides guidance on YFV safety and adverse events, and can aid in the development of public health strategies to mitigate hesitancy.

[The Reliability and Validity of the Korean Version of the 5C Psychological Antecedents of Vaccination Scale]

PURPOSE

This study aimed to valuate the reliability and validity of the Korean version of the 5C Psychological Antecedents of Vaccination (K-5C) scale.

METHODS

The English version of the 5C scale was translated into Korean, following the World Health Organization guidelines. Data were collected from 316 community-dwelling adults. Content validity was evaluated using the content validity index, while construct validity was evaluated through confirmatory factor analysis. Convergent validity was examined by assessing the correlation with vaccination attitude, and concurrent validity was evaluated by examining the association with coronavirus disease 2019 (COVID-19) vaccination status. Internal consistency and test-retest reliability were also evaluated.

RESULTS

Content validity results indicated an item-level content validity index ranging from .83 to 1, and scale-level content validity index, averaging method was .95. Confirmatory factor analysis supported the fit of the measurement model, comprising a five-factor structure with a 15-item questionnaire (RMSEA = .05, SRMR = .05, CFI = .97, TLI = .96). Convergent validity was acceptable with a significant correlation between each sub-scale of the 5C scale and vaccination attitude. In concurrent validity evaluation, confidence, constraints, and collective responsibility of the 5C scale were significant independent predictors of the current COVID-19 vaccination status. Cronbach's alpha for each subscale ranged from .78 to .88, and the intraclass correlation coefficient for each subscale ranged from .67 to .89.

CONCLUSION

The Korean version of the 5C scale is a valid and reliable tool to assess the psychological antecedents of vaccination among Korean adults.

Change in Rotavirus Vaccine Coverage in Brazil from before (2015-2019) through the COVID-19 Pandemic Period (2020-2021)

During the COVID-19 pandemic, a reduction in vaccination coverage of children and adolescents was observed in several countries. The aim of this study was to assess the impact of the pandemic, in the first two years, on human rotavirus vaccine (HRV) coverage in Brazil compared with previous years. The number of doses of HRV administered in the period from January 2015 to December 2021 and its annual vaccination coverage were analyzed. The vaccination coverage decreased to 77.3% in 2020 and to 70.4% in 2021, substantially lower than the minimum that would be expected (89.2%); the decline was more pronounced in the second year of the pandemic despite the fact that in this period, the circulation restrictions were already less tight. Of the five Brazilian macro-regions, the northeast had the largest decline, and the south had the smallest impact on coverage. At the municipal level, less than half of the Brazilian municipalities managed to achieve vaccination coverage above 90% in either pandemic year. Although there was already a downward trend in coverage in the pre-pandemic years, the present study shows that the values recorded in 2020 and 2021 were significantly lower. Monitoring of vaccination coverage in the coming years should be carried out continuously in order to avoid a possible resurgence of rotavirus-induced diarrhea.

The role of trust in COVID-19 vaccine hesitancy and acceptance among Black and White Americans

Mass vaccination has been identified as the easiest way to combat the deadly spread of the coronavirus (COVID-19) disease, yet many Americans are still hesitant to be vaccinated. To understand motivations behind why someone is vaccine hesitant, we conceptualized a theoretical model in which demographic variables are positively associated with four types of trust (i.e., trust in institutions, physicians, non-discrimination, and social media). These trust variables, in turn, are positively associated with the outcome variable of vaccine acceptance. A multi-group structural equation modeling analysis of survey data from 1008 U.S. adults suggested that trust in institutions and physicians were important for both White and Black Americans in whether they were vaccine accepting or hesitant, while trust in non-discrimination was important for Black Americans and trust in social media was important for White Americans. Implications of the findings and how they can inform future vaccine campaigns are discussed.

Understanding Primary Care Physician Vaccination Behaviour: A Systematic Review

BACKGROUND

Vaccine hesitancy decreases adult vaccination coverage and has been recognized by WHO as a major health threat. Primary care physicians (PCP) play a key role in vaccination by giving vaccine counselling to their patients. The aim of this systematic review is to identify the knowledge, beliefs, attitudes and barriers (KBAB) associated with own vaccination and patient recommendation in primary care physicians.

METHODS

MEDLINE/PubMed, EMBASE and Cochrane Library databases were used to search and identify relevant studies based on their title and abstract. In the next step, the full text of each previously selected article was read for eligibility. Articles were selected by two independent reviewers and data extraction was performed using tables. The following information was extracted: methodological characteristics, demographic factors, professional characteristics, and intrinsic or extrinsic factors influencing vaccination or recommendation.

RESULTS

Our search yielded 41 eligible papers, data-sources, previous practices, belief in the effectiveness or safety of the vaccine, perceived risk, and trust in health authorities were all shown to be related to own vaccination and patient recommendation.

CONCLUSION

Internet is the main source of information for PCP related to vaccine hesitancy. It is therefore essential to increase the presence and access to pro-vaccination content in this area. In addition, involving PCP in the establishment of vaccination recommendations could improve their credibility in the institutions. On the other hand, training in communication skills and establishing reminder systems could reflect higher vaccination coverage among their patients.

Monkeypox and Its Possible Sexual Transmission: Where Are We Now with Its Evidence?

Monkeypox is a rare disease but is increasing in incidence in different countries since the first case was diagnosed in the UK by the United Kingdom (UK) Health Security Agency on 6 May 2022. As of 9 August, almost 32,000 cases have been identified in 89 countries. In endemic areas, the monkeypox virus (MPXV) is commonly transmitted through zoonosis, while in non-endemic regions, it is spread through human-to-human transmission. Symptoms can include flu-like symptoms, rash, or sores on the hands, feet, genitalia, or anus. In addition, people who did not take the smallpox vaccine were more likely to be infected than others. The exact pathogenesis and mechanisms are still unclear; however, most identified cases are reported in men who have sex with other men (MSM). According to the CDC, transmission can happen with any sexual or non-sexual contact with the infected person. However, a recent pooled meta-analysis reported that sexual contact is involved in more than 91% of cases. Moreover, it is the first time that semen analysis for many patients has shown positive monkeypox virus DNA. Therefore, in this review, we will describe transmission methods for MPXV while focusing mainly on potential sexual transmission and associated sexually transmitted infections. We will also highlight the preventive measures that can limit the spread of the diseases in this regard.

Prevalence and Factors Affecting Willingness to Accept or Refuse Vaccination against COVID-19 among Healthcare Professionals in Southern Tunisia

BACKGROUND

The COVID-19 pandemic continues to spread throughout the world causing serious morbidity and mortality. Health care professionals (HCP) are on the front line in the face of this pandemic and are identified as priorities for COVID-19 vaccination. This study aimed to estimate the acceptability rate of the COVID-19 vaccination among HCP and to identify their predisposing factors. Methods: This was a cross-sectional study using an anonymous self-administered questionnaire including a randomized sample of HCP in Southern Tunisia, on March-April 2021. Results: Among 300 participants, the COVID-19 vaccine acceptability rate was 65.3%. Factors independently associated with vaccine acceptability were age groups <30 years [Adjusted Odds Ratio (AOR)=4.36; p = 0.002)], urbanity of residence (AOR = 3.44; p = 0.027), medical professional category (AOR = 2.69; p = 0.023) and caring for coronavirus infected patients (AOR = 2.32; p = 0.047). Belief that COVID-19 vaccination is important to work safely as a health care provider (AOR = 3.26; p = 0.013), should be available for all HCP (AOR = 17.98; p = 0.004) and has been quickly developed before it has been thoroughly vetted and tested for efficacy and safety (AOR = 5.88; p < 0.01) were independently associated with willingness to accept vaccine. Planning to get a COVID-19 vaccine for the next years and recommending it to the family were independent predictive factors of accepting COVID-19 vaccine ((AOR = 6.88; p < 0.001) and (AOR = 25.03; p < 0.001), respectively).Conclusion: The acceptance rate of vaccination against COVID-19 among Tunisian HCP is still low in South Tunisian hospitals. Socio-demographic, cultural and professional factors predisposing to the vaccination willingness were highlighted. Combating the vaccine hesitancy of HCP through enhancing sensibilization campaigns is essential to promote vaccination in general population.

Addressing vaccine hesitancy and resistance for COVID-19 vaccines

The COVID-19 vaccine rollout has had various degrees of success in different countries. Achieving high levels of vaccine coverage is key to responding to and mitigating the impact of the pandemic on health and aged care systems and the community. In many countries, vaccine hesitancy, resistance, and refusal are emerging as significant barriers to immunisation uptake and the relaxation of policies that limit everyday life. Vaccine hesitancy/ resistance/ refusal is complex and multi-faceted. Individuals and groups have diverse and often multiple reasons for delaying or refusing vaccination. These reasons include: social determinants of health, convenience, ease of availability and access, health literacy understandability and clarity of information, judgements around risk versus benefit, notions of collective versus individual responsibility, trust or mistrust of authority or healthcare, and personal or group beliefs, customs, or ideologies. Published evidence suggests that targeting and adapting interventions to particular population groups, contexts, and specific reasons for vaccine hesitancy/ resistance may enhance the effectiveness of interventions. While evidence regarding the effectiveness of interventions to address vaccine hesitancy and improve uptake is limited and generally unable to underpin any specific strategy, multi-pronged interventions are promising. In many settings, mandating vaccination, particularly for those working in health or high risk/ transmission industries, has been implemented or debated by Governments, decision-makers, and health authorities. While mandatory vaccination is effective for seasonal influenza uptake amongst healthcare workers, this evidence may not be appropriately transferred to the context of COVID-19. Financial or other incentives for addressing vaccine hesitancy may have limited effectiveness with much evidence for benefit appearing to have been translated across from other public/preventive health issues such as smoking cessation. Multicomponent, dialogue-based (i.e., communication) interventions are effective in addressing vaccine hesitancy/resistance. Multicomponent interventions that encompasses the following might be effective: (i) targeting specific groups such as unvaccinated/under-vaccinated groups or healthcare workers, (ii) increasing vaccine knowledge and awareness, (iii) enhanced access and convenience of vaccination, (iv) mandating vaccination or implementing sanctions against non-vaccination, (v) engaging religious and community leaders, (vi) embedding new vaccine knowledge and evidence in routine health practices and procedures, and (vii) addressing mistrust and improving trust in healthcare providers and institutions via genuine engagement and dialogue. It is universally important that healthcare professionals and representative groups, as often highly trusted sources of health guidance, should be closely involved in policymaker and health authority decisions regarding the establishment and implementation of vaccine recommendations and interventions to address vaccine hesitancy.

[Cross-cultural adaptation and validation for Brazilian Portuguese of the Parent Attitudes about the Childhood Vaccine (PACV) questionnaire]

Despite vaccine hesitancy being a recognized problem in Brazil, the extent of the problem is still a challenge. However, it is acknowledged that identifying parents who are hesitant about vaccines is a fundamental condition for the implementation of efficient health communication programs. Thus, the scope of this work was to carry out the cross-cultural adaptation and validation of the Parent Attitudes About Childhood Vaccine (PACV) questionnaire in Brazilian Portuguese. It is a cross-cultural adaptation study with the following steps: translation, synthesis, back-translation, quality assessment, expert committee, pre-test, reliability assessment and, finally, submission and approval. After carrying out these steps, it was observed that, in the evaluation of the Content Validity Index (CVI), no PACV question obtained CVI<0.80 in the dimensions of semantic, idiomatic, conceptual and cultural equivalence. In the global IVC, the Brazilian version of the PACV reached 0.91, indicating good interappraiser agreement and evidence of content-based validity. Cronbach's alpha for the instrument was 0.91. The PACV was adapted to Brazilian Portuguese, giving rise to the PAVC-Brasil version, which presented evidence of content-based validity, in addition to good internal consistency.

Factors related to parents’ adherence to childhood immunization

Background

Immunizations protect children from deadly infectious diseases. Yet, there is still insufficient understanding of the factors associated with parents’ non-adherence to immunizations in contexts outside of Western countries. The aim of this study is twofold: (a) to investigate non-adherence to immunizations for children aged 6 months to 6 years in Saudi Arabia based on the number of immunizations missing or delayed by more than one month; and (b) to examine the underlying factors that predict the extent of non-adherence based on the Health Belief Model framework.

Methods

A cross-sectional study was carried out in 22 randomly selected primary health care centers. Structured interviews were also conducted to collect data using the modified Health Belief Model questionnaire. Multiple regression analysis was used to assess the predictors of the extent of non-adherence.

Results

Based on data from 220 participants, 51.8% of parents did not adhere with childhood immunizations. There was no significant relationship between parents’ sociodemographic characteristics and the extent of their hesitancy about children’s immunizations. The linear combination of perception of infectious disease severity, perception of their children’s susceptibility, perception of immunization benefits, perception of fewer barriers to obtaining immunizations, cues to action related to immunizations, and self-efficacy predicted the extent of non-adherence to immunizations (F (11.220) = 2.595, p < 0.001) and explained 12% of its variance. Yet, only perceived children’s susceptibility, perceived barriers, and self-efficacy independently predicted parents’ non-adherence.

Conclusion

Saudi Arabia’s high proportion of non-adherence to childhood immunizations should be addressed. For instance, a health education program could be developed to increase parents’ awareness that their children are susceptible to health risks. Paying a special attention to existing barriers in accessing and receiving the immunizations is crucial. In addition, building parents’ self-efficacy, which is confident in making healthy decisions, such as keeping their children’s immunizations up to date, is important.

Human Papillomavirus Vaccine Hesitancy Highly Evident among Caregivers of Girls Attending South African Private Schools

The viral spread of social media misinformation and disinformation regarding human papillomavirus (HPV) vaccination safety has resulted in widespread vaccine hesitancy and suboptimal HPV vaccination uptake. We previously reported that only 19.4% of age-eligible private school girls in South Africa in 2018 had received ≥1 HPV vaccine dose. Here, we report on reasons given by caregivers for why their daughters were unvaccinated. An online survey targeting caregivers of girls in grades 4–7 attending South African private schools was conducted. Caregivers of unvaccinated girls provided the most important reason for their daughter not being vaccinated by either selecting from a list of coded reasons or providing a free text reason. Free text reasons were analysed, coded and added to the list of coded reasons, which were categorised according to broad themes. Frequency distributions of reasons and categories were calculated. Most reasons were related to vaccine hesitancy (61.4%), followed by lack of access to the vaccine (21.3%) and lack of information (15.7%). HPV vaccination coverage among age-eligible girls can be improved by including private-sector schools in the South African HPV vaccination programme, training healthcare providers to advocate for HPV vaccination and extending HPV vaccination advocacy campaigns to include private-sector educators.

Impact of the COVID-19 pandemic on the vaccination of children 12 months of age and under: an ecological study

This study aimed to evaluate the impact of the COVID-19 pandemic on the vaccination numbers for immunization geared toward individuals under 12 months of age in Brazil. This study analyzed the numbers of the nationwide vaccination coverage of ten vaccines present in the calendar from the National Immunization Program (NIP) over the past eight years (2013-2020). This is an ecological study, and all data were taken from the NIP. In comparison to the previous years, 2020 recorded the lowest figures of vaccination coverage (VC) of the average of the group of studied vaccines - 79.07% - while in 2019, this same index was 84.44%, resulting in a drop of 11.10% between these two periods. Moreover, during the year of the pandemic, of the ten analyzed vaccines, nine recorded their lowest historical VC figures, all of which were at least 14 percentage points below the goals set by the Brazilian Ministry of Health (MS, in Portuguese). Although there had already been a tendency toward a decline in VC, for various reasons, the present study illustrates that the numbers recorded in 2020 were significantly lower, a phenomenon also reported in other countries. Therefore, although it is impossible to affirm that the COVID-19 pandemic and its distancing measures are the causes for the drop in the immunization numbers, it can be inferred that there is indeed an association.

Identificação de áreas de risco e fatores associados à epidemia de sarampo de 2019 no Estado de São Paulo, Brasil

O objetivo foi analisar a ocorrência de clusters e fatores associados ao ressurgimento de casos de sarampo da maior epidemia do período pós-eliminação, ocorrida no Estado de São Paulo, Brasil, em 2019. Fatores sociossanitários e assistenciais foram analisados por modelos de Poisson inflacionado de zero (ZIP) e ZIP com efeito espacial estruturado e não estruturado. A estatística de varredura SCAN foi usada para analisar a ocorrência de clusters de casos. Foram identificados clusters de casos de alto risco em municípios que compõem a região intermediária de São Paulo. No modelo ZIP, foram observadas como fatores de risco no nível municipal as variáveis chefes de domicílio menores de 18 anos (RR ajustado = 1,39; ICr95%: 1,27-1,53), desigualdade na distribuição de renda (RR ajustado = 36,67; ICr95%: 26,36-51,15), desocupação em maiores de 18 anos (RR ajustado = 1,10; ICr95%: 1,08-1,12) e iluminação pública inexistente (RR ajustado = 1,05; ICr95%: 1,04-1,05). Nos modelos ZIP com efeito espacial estruturado e não estruturado, foram identificados como fatores de risco os indicadores chefes de domicílio menores de 18 anos (RR ajustado = 1,36; ICr95%: 1,04-1,90) e desigualdade na distribuição dos rendimentos do trabalho (RR ajustado = 3,12; ICr95%: 1,02-9,48). Em ambos os modelos, a cobertura de agentes de saúde se apresentou como fator de proteção. Os achados reforçam a importância de intensificar as ações de vigilância de sarampo articuladas à Estratégia Saúde da Família, especialmente em áreas de maior vulnerabilidade social, para garantir coberturas vacinais equânimes e satisfatórias e reduzir o risco de reemergência da doença.

The Committed Objectivity of Science and the Importance of Scientific Knowledge in Ethical and Political Education

Despite advances in discussions about the nature of science, there is still a paucity of discussion on the ontological dimension of science in science education research that makes it difficult to defend its content and teaching. In this article, the reasons for trusting science and science education are analyzed through three arguments. The first is that both the belligerent obscurantism and fake news of the ultra-right and the postmodern relativism of sections of the leftwing are connected to objective movements from the capitalist socioeconomic reality. The reestablishment of trust in science and its teaching requires an effort to understand the contemporary social contradictions, problems, and challenges. The second argument is that scientific knowledge does not need to abdicate objectivity in order to ground ethical and political positions. The third argument is that the socialization of scientific knowledge through school education is a necessary, albeit insufficient, condition for the ethical-political education of younger generations. The article concludes by stating that it is necessary to overcome the choice between an education that is supposedly neutral in political and ideological terms and an education that rejects the socialization of scientific knowledge in the name of respecting the multiplicity of culturally rooted voices from within the different oppressed groups present in today's society.

Parental category B vaccine hesitancy and associated factors in China: an online cross-sectional survey

BACKGROUND

Vaccine hesitancy is one of the top ten health threats. We aimed to (1) assess parental Category B vaccines hesitancy and associated sociodemographic factors in China, and (2) explore the association between attitude toward vaccines and self-reported hesitant behavior.

METHODS

A cross-sectional study was performed through a web-based anonymous online questionnaire survey between 9 February and 7 April 2021. Chinese parents aged ≥ 18 years with one child aged < 6 years were included to assess vaccine hesitancy using the vaccine-hesitancy scale (VHS). Structural equation model was used to determine relationships between variables.

RESULTS

Of 2952 Chinese parents included in the analysis, 17.5% were highly hesitant in Category B vaccines. Parents who were younger, less educated, engaged in health-related occupations, and had been vaccinated against influenza in the past year were more hesitant when vaccinating their children (P < 0.001). VHS score accuracy to identify vaccine-hesitant behavior was acceptable, and the optimal cutoff was 37.50 (with 61.96% parental vaccine hesitancy). Parents who lack confidence or believe vaccines were risk were more likely to show vaccine hesitant behavior (P < 0.001).

CONCLUSIONS

In China, effective interventions need to be implemented to eliminate parental Category B vaccines hesitancy.

Reasons for nonadherence to vaccination for influenza among older people in Brazil

This study aimed to estimate the prevalence of non-vaccination and the reasons for nonadherence to the influenza vaccine among older Brazilians according to sociodemographic characteristics. A cross-sectional study was conducted with data from older people (≥ 60 years of age; n = 23,815) who participated in the 2013 National Health Survey. Frequencies of non-vaccination and the main reasons for nonadherence were calculated with respective 95% confidence intervals. The prevalence of non-vaccination was 26.9% (approximately 7,106,730 older people). The reason rarely gets the flu was the most cited among the men (28.2%), the 60-to-69-year-old age group (29.6%), individuals with higher education (41.9%), and those with health insurance (32.3%). Fear of a reaction was the most cited reason in the northeastern region (25.4%), among women (29.3%), longer-lived individuals (≥70 years; 28.7%), and those who did not know how to read/write (26.7%). A total of 12.1% reported not believing in the vaccine's protection, and 5.5% did not know that it was necessary to take vaccine. The proportions of the main reasons for non-vaccination varied by sociodemographic characteristics. This study's findings highlight the need to increase older people's knowledge regarding influenza and influenza vaccines. Healthcare providers should be encouraged to counsel older people-especially those in subgroups with lower adherence, such as residents in the Northeast region, those aged 60-69 years, those who do not know how to read/write, those without a spouse/companion, and those without health insurance-regarding the different aspects of the vaccine and formally indicate it for groups at risk.

Sociodemographic and Psychological Predictors of Intention to Receive a COVID-19 Vaccine in Elderly Peruvians

The implementation of a vaccine against COVID-19 is one of the most important health strategies to mitigate the spread of the disease. The objective of this study was to estimate the prevalence of the intention to be vaccinated against COVID-19 and its predictors in older Peruvian adults. This is a cross-sectional study, where information was collected through an online survey regarding vaccination intention of the participants, as well as sociodemographic and psychological variables. A multiple regression analysis was applied to identify predictors of intention to be vaccinated against COVID-19. We evaluated 245 participants, who had a mean age of 72.74 years old (SD = 6.66). 65.5% of these older adults expressed a high likelihood of accepting vaccination, while 20.9% expressed a low likelihood of accepting vaccination, and 13.6% were hesitant. Eleven predictors were identified that explained 66.69% of the intention to vaccinate against COVID-19. This identified place of residence, perceived likelihood of contracting COVID-19, severity of previous infection with COVID-19, fear of the disease, previous refusal of a vaccine, concerns about vaccine sales and speculation, and trust toward vaccines against COVID-19, as the main predictors. Our results show that confidence in vaccines and previous vaccine refusal are relevant predictors of intention to vaccinate against COVID-19 in older adults; these findings may be useful to guide the development of campaigns for the immunization of this vulnerable group in the current pandemic.

Physicians' opinions on the necessity of COVID-19 vaccination in patients with epilepsy

The aim of the current study was to investigate the opinions of neurologists and psychiatrists in Iran on the necessity of COVID-19 vaccination in patients with epilepsy (PWE). These data can help policy makers understand the concerns of these healthcare professionals. This was a survey study. On September 1st, 2020 we sent a questionnaire (using Google-forms) to all neurologists and psychiatrists in Iran via WhatsApp. The survey included three general questions (age, sex, and discipline) and six COVID-specific questions. In total, 202 physicians participated in this study (116 neurologists and 86 psychiatrists). Of the participants, 27% believed that PWE are at increased risk of contracting COVID-19. The majority (74%) of the participants would confidently recommend COVID-19 vaccine to their patients. However, only 49% of the physicians would recommend such a vaccine to all patients; others would consider it in special populations only. The overwhelming majority (91%) of the participants would recommend COVID-19 vaccine only when a reliable vaccine becomes available. Many physicians would trust a vaccine that is approved by the World Health Organization (WHO) (46%) or a vaccine that is approved by the Food and Drug Administration (FDA-USA) (34%). Physicians have concerns on the issue of the necessity of (a future) COVID-19 vaccine in PWE. The most important concern is the reliability of a vaccine and in this regard, two health agencies, the WHO and the FDA, are the most trusted organizations to approve a vaccine against COVID-19.

Vaccine fake news: an analysis under the World Health Organization's 3Cs model

OBJECTIVE

To analyze fake news about immunobiologicals using as reference vaccine hesitancy in the World Health Organization's 3Cs model (confidence, complacency and convenience).

METHOD

This is an exploratory qualitative research that used content analysis to analyze fake news on three national news-checking sites.

RESULTS

Twenty fake news related to immunobiologicals were analyzed, with 55% published in 2018 and 63% related to yellow fever vaccine. From analysis of results, two empirical categories have emerged: Immunobiologicals have a potential risk of death/sequel; Immunobiologicals are ineffective.

CONCLUSION

Fake news have the potential to produce vaccine hesitancy based on the 3Cs model. Therefore, it is necessary to rethink communicative health practices that do not underestimate the asymmetries and inequities that characterize the unequal Brazilian society. Considering that nursing is the largest workforce in immunization rooms, there is a need for professionals' engagement as an active vehicle of truthful information in immunobiologicals for the population.

A global bibliometric analysis of research productivity on vaccine hesitancy from 1974 to 2019

Vaccine hesitancy is a phenomenon where individuals delay or refuse to take some or all vaccines. The objective of this study was to conduct a global bibliometric analysis of research productivity and identify country level indicators that could be associated with publications on vaccine hesitancy. We searched PubMed and Web of Science for publications from 1974 to 2019, and selected articles focused on behavioral and social aspects of vaccination. Data on country-level indicators were obtained from the World Bank. We used Spearman’s correlation and zero-inflated negative-binomial regression models to ascertain the association between country level indicators and the number of publications. We identified 4314 articles, with 1099 eligible for inclusion. The United States of America (461 publications, 41.9%), Canada (84 publications, 7.6%) and the United Kingdom (68 publications, 6.2%) had the highest number of publications. Although various country indicators had significant correlations with vaccine hesitancy publications, only gross domestic product (GDP) and gross national income (GNI) per capita were independent positive predictors of the number of publications. When the number of publications were standardized by GDP, the Gambia, Somalia and Malawi ranked highest in decreasing order. The United States, Canada and United Kingdom ranked highest (in that order) when standardized by current health expenditure. Overall, high-income countries were more productive in vaccine hesitancy research than low-and-middle-income countries. There is a need for more investment in research on vaccine hesitancy in low-and-middle-income countries.

Factors Associated with Willingness to be Vaccinated Against COVID-19 in a Large Convenience Sample

Willingness and reasons to be vaccinated against COVID-19 were examined among 26,324 respondents who completed a survey on willingness and questions related to Confidence in vaccine safety, Complacency about the disease, Convenience of vaccination, tendency to Calculate risks versus benefits, and Concern for protecting others. Willingness to be vaccinated differed by age (p < 0.001), by race and ethnicity (p < 0.001) and by level of education (p < 0.001). Willingness generally increased with age and education. Asians were most willing to be vaccinated, followed by non-Hispanic Whites, Hispanics, and non-Hispanic Blacks (p < 0.001). Occupational groups differed in willingness (p < 0.001). Retired and students were more willing than all others (p < 0.001) followed by disabled or unemployed, healthcare workers, and educators. First Responders were least willing to be vaccinated (p < 0.001) followed by construction, maintenance and landscaping, homemakers, housekeeping, cleaning and janitorial workers, and retail and food service. The strongest predictor of willingness was confidence with the safety of the vaccine (r = 0.723, p < 0.001), followed by concern with protecting others by being vaccinated (r = 0.574, p < 0.001), and believing COVID-19 was serious enough to merit vaccination (r = 0.478, p < 0.00). Using multiple regression, confidence in safety was the strongest predictor for all groups. Protecting others was strongest for 13 of 15 demographic groups and 8 of 11 occupational groups. College educated, non-Hispanic Whites, first responders, construction, maintenance and landscape workers, housekeeping, cleaning and janitorial workers all gave greater weight to complacency about the disease. These results can help in designing programs to combat vaccine hesitancy.

Access to Vaccination Information and Confidence/Hesitancy Towards Childhood Vaccination: A Cross-Sectional Survey in China

Access to vaccination information could influence public attitudes towards vaccination. This study investigated the number and types of vaccination-related information sources, and estimated their associations with vaccine confidence and hesitancy in China. In January 2019, we conducted a cross-sectional survey in China, and 2122 caregivers with children <6 years completed self-administered questionnaires. Logistic regressions were used to assess associations between caregivers’ primary information sources and vaccine confidence/hesitancy. A majority (72%) of caregivers had multiple sources of vaccination-related information. The proportions of caregivers reporting professional sources, media, and peers as primary information sources were 81%, 63%, and 26%. Internal migrants were less likely to get information from professional sources; more educated and wealthier caregivers reported more information sources and were more likely to get information from media and peers. Caregivers who reported professional information sources had significantly higher odds of being confident about the safety of vaccines and lower odds of being hesitant toward vaccination than those who did not. Caregivers who reported the media as a primary information source had significantly higher odds of being hesitant toward vaccination than those who did not. To address vaccine hesitancy, it is essential to promote universal access to professional vaccination-related information sources, and to use the media to disseminate evidence-based information and clarify misinformation. Health communication should target internal migrants, and more educated and wealthier caregivers.

Covid-19, the anti-vaccine movement and immunization challenges in Brazil

AIMS: The COVID-19 pandemic suddenly and significantly increased hospitalizations for pneumonia with systemic inflammatory disease. Since its appearance, COVID-19 has affected more than 200 countries, with more than 90 million cases and almost 2 million deaths. So far, there is no quality evidence regarding the specific pharmacological therapy for COVID-19; most treatments usually involve off-label use of existing drugs and have unproven efficacy. The global effort converges on the development of a vaccine; however, the greatest challenge is to achieve collective immunization in the face of increasing vaccination hesitancy.METHODS: This study investigated the impact of vaccine hesitancy movements on the goal of COVID-19 immunization in Brazil. An integrative bibliographic review was performed with an electronic search on PubMed and SciELO that yielded 13.535 articles. Inclusion and exclusion criteria were applied which included 29 interventional and descriptive studies.RESULTS: The results of the 29 studies revealed that the most frequent reasons for hesitation is skepticism about the true interests of the industry and politicians, the lack of trust in research, and inaccurate information on social media.CONCLUSION: The main factors that lead the population not to believe in vaccines were the real interests of industry and politicians, lack of confidence in research, and the amount of false information that circulates massively on social media and because of that it is possible that Brazil will face some challenges in achieving collective immunity due to the anti-vaccine movement.

Control and prevention of infectious diseases from a One Health perspective

The ongoing COVID-19 pandemic has caught the attention of the global community and rekindled the debate about our ability to prevent and manage outbreaks, epidemics, and pandemics. Many alternatives are suggested to address these urgent issues. Some of them are quite interesting, but with little practical application in the short or medium term. To realistically control infectious diseases, human, animal, and environmental factors need to be considered together, based on the One Health perspective. In this article, we highlight the most effective initiatives for the control and prevention of infectious diseases: vaccination; environmental sanitation; vector control; social programs that encourage a reduction in the population growth; control of urbanization; safe sex stimulation; testing; treatment of sexually and vertically transmitted infections; promotion of personal hygiene practices; food safety and proper nutrition; reduction of the human contact with wildlife and livestock; reduction of social inequalities; infectious disease surveillance; and biodiversity preservation. Subsequently, this article highlights the impacts of human genetics on susceptibility to infections and disease progression, using the SARS-CoV-2 infection as a study model. Finally, actions focused on mitigation of outbreaks and epidemics and the importance of conservation of ecosystems and translational ecology as public health strategies are also discussed.

Knowledge and Attitudes on Vaccination in Southern Romanians: A Cross-Sectional Questionnaire

Vaccines are fundamental instruments upon which all modern medicine is hinged. This has recently come into the light because of the COVID-19 pandemic caused by SARS-CoV-2. We aimed to assess the knowledge and attitudes of the public regarding vaccination. To this end, a questionnaire, which was disseminated to the general population between 2017 and 2019, was used. We evaluated the responses from 1647 individuals (61% female, with a median age of 37 years, mostly from urban settings). Most respondents (85%) had children and were in favor of vaccination. Our study underlines the role that family physicians have in the education and information of citizens. A small, but considerable, number of respondents (108, 7.84% of those with children) had not vaccinated their children according to the national vaccination scheme. Deterrents were considered to be lack of information and fear of side effects. However, 167 of our respondents (12.12% out of 1377 respondents with children) said that their child experienced adverse events—most of which were mild local reactions. Alternatives to vaccination were proposed by some. In this study, we highlight the attitudes of respondents and multiple gaps in general knowledge, both of which may need to be addressed, especially in light of the current pandemic situation and past failed campaigns.

A review of vaccine effects on women in light of the COVID-19 pandemic

The pandemic situation triggered by the spread of COVID-19 has caused great harm worldwide. More than six million people have been infected, and more than 360,000 of them have died. This is the worst catastrophe suffered by mankind in recent history. In the face of this severe disaster, people all over the world are frightened of the prospect of facing an outbreak or an annual recurrence. However, the development of a vaccine will help control the impact of COVID-19. Women in particular have been more seriously affected by the pandemic. Since the pressure and physical load they suffer are often greater than what men endure, women are more threatened by COVID-19. Though women have a poorer quality of life and work and face worse economic conditions, they also tend to have better physiological immunity than men, which can ease the effect of COVID-19. The early development of a vaccine against COVID-19 is an important issue that must take into consideration women's better immune response to the virus along with the technique of hormone regulation. Relevant research has been conducted on female-specific vaccines in the past, and women's issues were considered during those clinical trials to ensure that complications and antibody responses were positive and effective in women. National policies should also propose good strategies for women to be vaccinated. This could improve consciousness, give women a better vaccination experience, enhance their willingness to vaccinate, and protect them from COVID-19 infection.

[Areas with declining vaccination coverage for BCG, poliomyelitis, and MMR in Brazil (2006-2016): maps of regional heterogeneity]

Immunization is known to be one of the most successful and cost-effective health interventions, resulting in the eradication and control of various diseases in the world. However, Brazil has experienced a worrisome drop in vaccination coverage, associated with the resurgence of various previously controlled or eradicated diseases. This study thus conducted a situational diagnosis weighing Brazil's different regions and time trends in vaccination coverage in order to identify areas with reduction in vaccination coverage for BCG, poliomyelitis, and MMR. This ecological study collected data on the number of children up to one year of age who had been vaccinated with these three vaccines from 2006 to 2016, according to municipality (county). Data were obtained from the Brazilian Health Informatics Department. A spatial scan was performed, analyzing spatial variations in the time trends for vaccination coverage. Downward trends were seen in the number of immunizations in Brazil, with reductions of 0.9%, 1.3%, and 2.7% per year for BCG, poliomyelitis, and MMR, respectively. Significant decreases were also seen in all five major geographic regions with time trends in the reduction of vaccination coverage. The study evidenced an important reduction in vaccination coverage in recent years, with major heterogeneity between municipalities. Thus, focused attention and strategic planning in keeping with each local area's characteristics are necessary to address both the reduction of vaccination coverage and the resurgence of vaccine-preventable diseases in Brazil.

Current tools available for investigating vaccine hesitancy: a scoping review protocol

INTRODUCTION

Vaccine hesitancy, defined as the delay in acceptance or refusal of vaccination despite availability of vaccination services is responsible in part for suboptimal levels of vaccination coverage worldwide. The WHO recommends that countries incorporate plans to measure and address vaccine hesitancy into their immunisation programmes. This requires that governments and health institutions be able to detect concerns about vaccination in the population and monitor changes in vaccination behaviours. To do this effectively, tools to detect and measure vaccine hesitancy are required. The purpose of this scoping review is to give a broad overview of currently available vaccine hesitancy measuring tools and present a summary of their nature, similarities and differences.

METHODS AND ANALYSIS

The review will be conducted using the framework for scoping review proffered by Arksey and O'Malley. It will comply with the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews' guidelines. The broader research question of this review is: what vaccine hesitancy measuring tools are currently available?Search strategies will be developed using controlled vocabulary and selected keywords. PubMed, Web of Science, Scopus and reference lists of relevant publications will be searched. Titles and abstracts will be independently screened by two authors and data from full-text articles meeting the inclusion criteria will be extracted independently by two authors using a pretested data charting form. Discrepancies will be resolved by discussion and consensus. Results will be presented using descriptive statistics such as percentages, tables, charts and flow diagrams as appropriate. Narrative analysis will be used to summarise the findings of the review.

ETHICS AND DISSEMINATION

Ethics approval is not required for the review. It will be submitted as part of a doctoral thesis, presented at conferences and published in a peer-reviewed journal.

TRIAL REGISTRATION NUMBER

https://osf.io/x8fjk/.

Resurgence of Vaccine-Preventable Diseases in Venezuela as a Regional Public Health Threat in the Americas

Venezuela's tumbling economy and authoritarian rule have precipitated an unprecedented humanitarian crisis. Hyperinflation rates now exceed 45,000%, and Venezuela's health system is in free fall. The country is experiencing a massive exodus of biomedical scientists and qualified healthcare professionals. Reemergence of arthropod-borne and vaccine-preventable diseases has sparked serious epidemics that also affect neighboring countries. In this article, we discuss the ongoing epidemics of measles and diphtheria in Venezuela and their disproportionate impact on indigenous populations. We also discuss the potential for reemergence of poliomyelitis and conclude that action to halt the spread of vaccine-preventable diseases within Venezuela is a matter of urgency for the country and the region. We further provide specific recommendations for addressing this crisis.

Vaccine non-receipt and refusal in Ethiopia: The expanded program on immunization coverage survey, 2012

INTRODUCTION

Rates of full childhood immunization in Ethiopia are well below the WHO global goal of 90% coverage by 2020. This study explores associations between sociodemographic characteristics and healthcare services utilization with experiences of not receiving a vaccine in Ethiopia.

METHODS

This analysis uses data from Ethiopia's 2012 Expanded Program on Immunization Coverage Survey. The relationships between explanatory variables, including sociodemographic and healthcare utilization factors, and various reasons a child was not vaccinated were assessed with Rao-Scott chi-square tests. Multivariable logistic regression analyses examined significant predictors of these experiences.

RESULTS

The sample includes the caregivers of 2,722 children. Experiences of not receiving a vaccine were characterized overall and by type of experience: whether a caregiver ever refused vaccination for their child (2.9%), ever decided to not take their child to a health center for vaccination (3.6%), and ever went to a health facility for vaccination but child was not vaccinated (12.0%). Region of residence, possession of a vaccination card, and the setting of the child's last routine vaccination were predictors of not receiving a vaccine. Caregivers reported negative perceptions of vaccines were among their reasons for refusing a vaccine or declining to take their child to a health facility for vaccination.

CONCLUSION

Prior experiences with health facilities, such as where a child received their last routine vaccine, play a key role in future vaccination. Vaccine receipt at an outreach event is associated with not bringing a child to a health facility for vaccination, which may indicate an unwillingness to visit or difficulty accessing health centers. Further, negative perceptions of vaccines may result in vaccine refusal or delay. Findings of this study provide public health officials with a better understanding of factors related to vaccination experiences and can inform development of interventions that will improve childhood vaccination rates in Ethiopia.

Factors influencing refusing of flu vaccination among pregnant women in Italy: Healthcare workers' role

BACKGROUND

Pregnant women are at increased risk of influenza complications. Influenza vaccine provides them a substantial protection.

OBJECTIVE

The aim of this study was to investigate determinants associated with non-adherence to influenza vaccine recommendations in pregnant women in Italy.

METHODS

A cross-sectional study has been carried out among pregnant women attending their follow-up visit in some mother and child services in a Region of Italy from October 2016 to January 2017. The study protocol was approved by the local research Ethics. A self-administered close-ended questionnaire has been administered to the pregnant women. Differences in background, socio-demographic characteristics, knowledge and attitudes towards flu vaccine were tested in vaccinated and unvaccinated women. Multivariate analysis was performed to control for confounding factors.

RESULTS

Three hundred and sixty-six women answered the survey (97% response rate) and 96.1% (348) declared of being unvaccinated against influenza during the 2016-2017 influenza season. Frequent reasons for refusing vaccination were drugs objection and concerns about vaccines' effects. According to the refusal attitude, influenza knowledge was low in the group. Moreover, analysis showed that low adherence to vaccination is associated to lacking promotion of vaccination to pregnant women carried out by healthcare workers (P < 0.005).

CONCLUSIONS

Healthcare workers have a key role in assisting women during the gestational period, so their active involvement in vaccination promotion is essential. It is necessary to improve health care workers' knowledge about vaccine relevance in protecting pregnancy and their communication skills to properly inform pregnant women.

What is the importance of vaccine hesitancy in the drop of vaccination coverage in Brazil?

The successful Programa Nacional de Imunizações do Brasil (Brazilian National Immunization Program) has been experiencing a major challenge with regard to vaccination coverage for children, which has been dropping. Several aspects are related, but certainly vaccine hesitancy has been strengthening itself as one of the main concerns of Brazilian public administrators and researchers. Vaccine hesitancy is the delay in acceptance or refusal despite having the recommended vaccines available in health services, being a phenomenon that varies over time, over location and over types of vaccines. Hesitant individuals are between the two poles of total acceptance and refusal of vaccination. Vaccine hesitancy is nothing new in European and North-American countries, and even in Brazil, it has been studied even if under another name. The drop of vaccination coverage observed from 2016 on reiterates the relevance of the theme, which must be better understood through scientific research.