Development of a survey to identify vaccine-hesitant parents: the parent attitudes about childhood vaccines survey

The community nurse's role on the promotion of papillomavirus vaccination among young students: A study protocol

Vaccination is the principal strategy for primary prevention of infection by Human Papilloma Virus (HPV), which causes different pathological conditions, up to cancer, in both males and females. However, to date, knowledge among adolescents and their parents about the HPV vaccine is still low. The aim of this quasi-experimental, multicenter study is to assess the effectiveness of a digital educational intervention, conducted by a multidisciplinary health-care team including a Community Nurse, to increase adolescents' HPV vaccination uptake, their knowledge, self-efficacy, feelings and involvement in HPV vaccine decision-making, and parents' vaccination hesitancy. The study will be carried out among a population of students (and their parents), aged between 11 and 13, at secondary schools in Italy. Validated questionnaires will be administered to both students and parents at baseline (T0) and 3 months after a digital educational intervention (T1). The findings may be useful in evaluating and deepening a methodology for designing and implementing educational interventions, embedded in the school setting, that could promote the achievement of outcomes within the broader process of youth's health promotion.

Development and validation of the Vaccine Barriers Assessment Tool for identifying drivers of under-vaccination in children under five years in Australia

Data on routine childhood vaccination coverage can only tell us who is under-vaccinated; it cannot explain why vaccine coverage is low. Collecting data on the reasons behind under-vaccination is necessary to implement cost-effective strategies that address key barriers and target interventions appropriately. However, no instruments that measure both vaccine acceptance and access factors among parents of children <5 y have been validated in high-income countries. This study aims to develop and validate the Vaccine Barriers Assessment Tool (VBAT) for Australia. We applied three phases of mixed methods data collection and analysis. In Phase 1, we developed a comprehensive list of 80 items reflecting all potential parental barriers to childhood vaccination, derived from published literature and behavioral theory. Through cognitive interviews (n = 28), we refined this list to 45 items. In Phase 2, we conducted a two-wave online survey to test the reliability and validity of these items in an Australian sample of parents (n = 532) with structural equation modeling, further refining the list to 35 items. In Phase 3, we conducted a final parent survey (n = 156), administering these items along with the Parent Attitudes toward Childhood Vaccination (PACV) scale for comparison. We reviewed participants' immunization register data to assess the predictive validity of the proposed models. The final 6-item short form and 15-item long form Vaccine Barriers Assessment Tool assess access, communal benefit, personal risk, equity, commitment, social norms, and trust in health-care workers. It is being applied for national surveillance in Australia and will be adapted for additional populations and vaccines.

Hesitancy toward Childhood and Influenza Vaccines: Experiences from Highly Educated Jordanian Parents

We aimed to examine vaccine hesitancy and knowledge towards influenza vaccines among Jordanian parents. Data were collected via an online questionnaire distributed between October 2023 and March 2024. They included sections on demographics, parental attitudes towards childhood vaccines (PACVs), and knowledge and practices towards influenza vaccines. Associations were examined using the chi-squared test. A binary logistic regression model was utilized to determine predictors of vaccine usage. A total of 3208 participants were included, of which 9.3% were vaccine hesitant per the PACV categorization. Fathers were more likely to be vaccine hesitant (OR: 1.40; 95CI: 1.07-1.85). Similarly, divorced parents (OR: 1.80; 95CI: 1.05-3.12) were significantly more vaccine hesitant compared to their married counterparts. Conversely, higher monthly income (OR: 0.66; 95CI: 0.48-0.92), working in healthcare settings (OR: 0.71; 95CI: 0.51-0.98), and adherence to national vaccination policies (OR: 0.07; 95CI: 0.04-0.13) were significantly associated with a lower likelihood of vaccine hesitancy. Multivariate analysis shows that a healthcare-related occupation (OR: 0.62; 95CI: 0.44-0.87), semi-compliance (OR: 0.37; 95CI: 0.22-0.64), full compliance (OR: 0.08; 95CI: 0.05-0.13) with national vaccine guidelines, and knowledge scores of influenza and vaccines (OR: 0.79; 95CI: 0.75-0.84) were the only independent factors influencing vaccine hesitancy. Finally, non-hesitant participants were significantly more likely to give the influenza vaccine to their children at the present or future time (OR: 2.07; 95CI: 1.53-2.80). Our findings highlight the complexity of vaccine hesitancy and underscore the importance of tailored interventions. Cultural, socioeconomic, and individual factors play significant roles in shaping attitudes toward vaccination. An understanding of the aforementioned among Jordanian parents provides insights for public health initiatives. Compliance with national vaccination guidelines and addressing concerns about vaccine safety are essential for improving childhood vaccination rates in Jordan.

"I Thought It Was Better to Be Safe Than Sorry": Factors Influencing Parental Decisions on HPV and Other Adolescent Vaccinations for Students with Intellectual Disability and/or Autism in New South Wales, Australia

The uptake of human papilloma virus (HPV) and other adolescent vaccinations in special schools for young people with disability is significantly lower than in mainstream settings. This study explored the factors believed to influence parental decision making regarding vaccine uptake for students with intellectual disability and/or on the autism spectrum attending special schools in New South Wales, Australia, from the perspective of all stakeholders involved in the program. Focus groups and interviews were conducted with 40 participants, including parents, school staff, and immunisation providers. The thematic analysis identified two themes: (1) appreciating diverse parental attitudes towards vaccination and (2) educating parents and managing vaccination questions and concerns. While most parents were described as pro-vaccination, others were anti-vaccination or vaccination-hesitant, articulating a marked protectiveness regarding their child's health. Reasons for vaccine hesitancy included beliefs that vaccines cause autism, concerns that the vaccination may be traumatic for the child, vaccination fatigue following COVID-19, and assumptions that children with disability will not be sexually active. Special school staff regarded the vaccination information pack as inadequate for families, and nurses described limited educational impact resulting from minimal direct communication with parents. More effective communication strategies are needed to address vaccine hesitancy among parents with children with disability.

Concerns about vaccines and vaccination behavior among Japanese budget travelers to India

BACKGROUND

Low vaccination coverage among travelers poses a critical challenge to global health security. Indeed, public concerns regarding vaccines can lead to vaccine reluctance and refusal, but evidence about the impacts of concerns regarding vaccines on the uptake of travel vaccinations remains sparse. We examined the associations between concerns about vaccines and vaccination behavior among travelers.

METHODS

Japanese travelers aged 18 years or older, who stayed at a guesthouse in New Delhi, India, were targeted (n = 153). We conducted cross-sectional surveys from August 23 to September 2, 2019, and from February 19 to March 5, 2020. We examined the associations of three concerns regarding vaccines (5-point scale)-serious side effects from vaccines, vaccine safety, and vaccine effectiveness-with the uptake of travel vaccinations.

RESULTS

In total, 60 participants (39.2 %) had been vaccinated for this or a past trip. After adjusting for all potential confounding variables, concerns about serious side effects from vaccines and vaccine safety were negatively associated with the uptake of travel vaccinations. The ORs (95 % CIs) for 1-point increases in concerns about serious side effects from vaccines and vaccine safety were 0.72 (0.52, 0.99) and 0.71 (0.52, 0.96), respectively. Sensitivity analyses did not change the results substantially.

CONCLUSIONS

Concerns about vaccine safety issues were negatively associated with the uptake of travel vaccinations among the participants, with no corresponding association observed for vaccine effectiveness. Addressing concerns about vaccine safety issues, rather than vaccine effectiveness may contribute to an increased uptake of travel vaccinations.

The affecting factors of COVID-19 vaccine hesitancy in parents of children with cancer: A cross-sectional Jordanian study

BACKGROUND AND OBJECTIVE

Children with cancer have higher mortality and morbidity rates than have been reported in general children patients infected by coronavirus infection 2019 (COVID-19). Thus, for children with cancer, COVID-19 vaccination is a priority. This study aims to investigate the factors influencing COVID-19 vaccine hesitancy in parents of children with cancer in Jordan.

METHODS

A cross-sectional study was conducted during the third quarter of 2022 at the King Hussein Cancer Center in Amman, Jordan. The study employed a self-administered questionnaire, incorporating COVID-specific questions. Participants included parents of children aged 18 years or younger undergoing treatment or monitoring at the center. A straightforward random sampling approach was used to recruit participants. Ethical approval and institutional permission were obtained, ensuring voluntary participation with the right to withdraw.

RESULTS

A total of 409 participants, predominantly female, were enrolled in the study. Notably, most of the enrolled parents did not intend to have their children vaccinated either for seasonal flu or for COVID-19, 76.2% and 78.7%, respectively. The bulk of the parents were encouraged to vaccinate their child by the child's pediatrician (82.9%). Parents' age and their children's age were significantly influenced their willingness to vaccinate their children with the COVID-19 vaccine (p < .001), in which parents' age group 45-54 years and children's age group above 15 years old show the highest vaccination rate. Meanwhile, there was a significant association between children's vaccination with parents suffering from chronic disease (p < .001) and parents receiving the COVID-19 vaccine (p = .014). There are still some concerns regarding the COVID-19 vaccine's effectiveness, safety, and whether it is essential for their child.

CONCLUSION

A large proportion of parents in Jordan are hesitant about the COVID-19 vaccine when considering its administration to their children with cancer. This finding emphasizes the importance of communication and education to address vaccination hesitancy.

A World without Measles and Rubella: Addressing the Challenge of Vaccine Hesitancy

The worldwide elimination of measles and rubella is feasible, but not without overcoming the substantial challenge of vaccine hesitancy. This challenge is complicated by the spread of misinformation and disinformation fueled by rapidly progressing technologies and evolving forms of online communication. The recent COVID-19 pandemic has only added further complexity to this challenge. However, considerable progress has been made in understanding the scope of the problem and the complex factors that influence vaccine hesitancy. Our understanding of evidence-based strategies for addressing vaccine hesitancy has grown significantly, including evidence for effective communication and behavioral interventions. In this article, we review measles and rubella vaccines and vaccine hesitancy. We then provide an overview of evidence-based strategies for addressing vaccine hesitancy, including communication strategies and behavioral interventions. This article is relevant to healthcare professionals, health system leaders, public health professionals, policymakers, community leaders, and any individuals who have a role in addressing vaccine hesitancy in their communities. Finally, we review future directions and major areas of research need.

Parental knowledge and attitudes to infant immunization in the context of RSV: All about confidence?

BACKGROUND

Recently, the first RSV vaccines have been approved, but vaccine hesitancy still poses great challenges to immunization programs.

OBJECTIVE

To investigate this phenomenon in the context of the new RSV vaccines and an increased virus activity in 2022/23, we assessed parental knowledge and attitudes towards general childhood and RSV vaccines.

METHODS

Parents of infants from 0-36 months completed an online questionnaire on demographics, socio-economic status, mental well-being, knowledge on RSV and perceptions of disease, attitudes to general childhood and RSV vaccines. The survey was conducted from February-June 2023 in the region of Regensburg, Germany. We compared continuous or categorical data with two-sided t-tests or Chi-square tests, respectively. Linear and logistic regression models were used to adjust for confounders.

RESULTS

From 191 survey participants, 84 % had never refused any recommended vaccination and 91 % trusted their paediatrician's information. 11 % felt that children should have fewer vaccinations or rather get over the illness. Parents who were supportive or undecided about RSV vaccination were less likely to be vaccine hesitant in general (OR 0.03, p < 0.001; OR 0.13, p = 0.003). 58 % reported to have basic or good knowledge on RSV, correlating with a higher socioeconomic index (p = 0.049). 24 % were undecided about RSV immunization, while all parents rated its benefit high in the child's first year of life. Parents who refused RSV vaccination were less concerned about the infection compared to vaccine supporters (OR 0.44, p < 0.001). Parents with previously hospitalized (OR 3.88, p = 0.017) or preterm born children (OR 5.12, p = 0.026) were generally more concerned.

CONCLUSION

Many factors influence parental decision-making leading to three main groups of attitudes: vaccine acceptors, refusers and hesitant but accessible parents. They (24%) represent the "target group" to increase vaccine uptake. Information on the vaccine-preventable disease reduces vaccine hesitancy, underlining the importance of healthcare professionals who remain an important source of trust.

Vaccine hesitancy in adolescents regarding COVID-19 vaccination: A literature review

BACKGROUND

Previous reviews on the cause of vaccine hesitancy (VH) have not included vaccine hesitancy related to the COVID-19 vaccination in adolescents, which is necessary for minimizing disruptions to education and the maintenance of their overall well-being, health, and safety. This review aims to provide an overview of vaccine-hesitant perspectives on the COVID-19 vaccination in adolescents and the factors that influence them.

METHODS

This review followed the Systematic Reviews and Meta-Analysis for Literature Review (PRISMA). Searches were carried out in the PubMed, Science Direct, and Google Scholar databases. Following data extraction, a thematic analysis of vaccine hesitancy in adolescents regarding COVID-19 vaccines was conducted.

RESULTS

Seven articles were included. Nine areas were identified as factors influencing vaccine hesitancy, namely gender identity, parental roles, vaccine safety and effectiveness, perceptions of COVID-19 as a disease, medical professionals' recommendations, health behavior, vaccination experience, adolescent ignorance, and religious concerns. Our findings suggest that the scientific knowledge of vaccines and the size of clinical trials during their development reduce vaccine hesitancy.

CONCLUSION

Our findings build on those of previous research to suggest specific information that may help address vaccine hesitancy among adolescents.

Prevalence and Determinants of Routine Childhood Vaccination Hesitancy in Makkah, Saudi Arabia

BACKGROUND

Vaccines are among the most important inventions of the last century; they contribute significantly to preventing infectious diseases. In 2019, the World Health Organization (WHO) recognized vaccine hesitancy as one of the top ten threats. This study aimed to estimate the prevalence and determinants of routine childhood vaccine hesitancy among parents in Makkah City in 2023 using the Parent Attitude about Childhood Vaccine (PACV) survey.

METHODS

A cross-sectional study was conducted from October to December 2023 among parents of children aged six years or younger who attended primary healthcare centers (PHCC) in Makkah City using a stratified sampling technique. Data were collected using an electronic self-administered questionnaire, and the Arabic PACV Cronbach's alpha was 0.79.

RESULTS

A total of 246 parents participated in the study. Over half of the participants were males (56.5%), and the mean age was 36 ± 7.2. Parents who scored 50% or more were considered hesitant. The study identified approximately 3% of parents as hesitant. The only significant association toward hesitancy status was age; younger parents were less hesitant than older parents, P-value < 0.006. The other variables, such as gender, educational level, marital status, employment status, household income, number of children, and having a child with chronic disease, were not significantly associated with vaccine hesitation.

CONCLUSION

Though the overall parental hesitation rate is low, several questions received more hesitant responses than non-hesitant responses. Therefore, we recommend raising awareness through healthcare providers focusing on educating parents and correcting misconceptions about the safety and efficacy of vaccines.

Parental hesitancy toward children vaccination: a multi-country psychometric and predictive study

AIM

Understanding vaccine hesitancy, as a critical concern for public health, cannot occur without the use of validated measures applicable and relevant to the samples they are assessing. The current study aimed to validate the Vaccine Hesitancy Scale (VHS) and to investigate the predictors of children's vaccine hesitancy among parents from Australia, China, Iran, and Turkey. To ensure the high quality of the present observational study the STROBE checklist was utilized.

DESIGN

A cross-sectional study.

METHOD

In total, 6,073 parent participants completed the web-based survey between 8 August 2021 and 1 October 2021. The content and construct validity of the Vaccine Hesitancy Scale was assessed. Cronbach's alpha and McDonald's omega were used to assess the scale's internal consistency, composite reliability (C.R.) and maximal reliability (MaxR) were used to assess the construct reliability. Multiple linear regression was used to predict parental vaccine hesitancy from gender, social media activity, and perceived financial well-being.

RESULTS

The results found that the VHS had a two-factor structure (i.e., lack of confidence and risk) and a total of 9 items. The measure showed metric invariance across four very different countries/cultures, showed evidence of good reliability, and showed evidence of validity. As expected, analyses indicated that parental vaccine hesitancy was higher in people who identify as female, more affluent, and more active on social media.

CONCLUSIONS

The present research marks one of the first studies to evaluate vaccine hesitancy in multiple countries that demonstrated VHS validity and reliability. Findings from this study have implications for future research examining vaccine hesitancy and vaccine-preventable diseases and community health nurses.

Digital health literacy, vaccine information sources, and vaccine acceptance among parents in Ontario: Quantitative findings from a mixed methods study

Parents make important vaccination decisions for their children and many variables affect parents' decisions to accept or decline vaccines. Parents are tasked with locating, understanding, and applying information to inform health decisions often using online resources; however, the digital health literacy levels of parents are unknown. The purpose of this study was to investigate parents' digital health literacy levels, their sources for vaccine information, and analyze how demographics, digital health literacy, health literacy, parental attitudes and vaccine beliefs, trust, and vaccine information sources predict vaccine acceptance. Quantitative findings of a mixed methods study that examined parental vaccine decision making across the continuum of vaccine hesitant to vaccine accepting is reported. An online survey of parents of young children living in Ontario, Canada was conducted in 2022. Multiple linear regression determined predictors of vaccine acceptance. 219 participants completed the survey and on average reported adequate digital health literacy skill. Healthcare providers were reported as the most commonly used source of vaccine information. Two models were retained that predicted vaccine acceptance, both models predicted about 50% of the variability in vaccine acceptance. Model A identified that trust predicted parent vaccine acceptance and model B identified that digital health literacy, and the vaccine information sources healthcare providers, family and friends, and alternate healthcare providers predicted vaccine acceptance. Family and friends and alternate healthcare providers negatively predicted vaccine acceptance. Most parents in our study had high levels of digital health literacy. Opportunities exist for further research and policy change focused on trust at a systemic public health level. While clinical level implications included the importance of healthcare providers as a vaccine information source and adequate digital health literacy to facilitate parental vaccine decision making. Continued efforts to develop awareness on the importance of digital health literacy among the public and healthcare providers is needed, including further research on the digital health literacy levels of Canadians.

A feasibility study assessing knowledge, vaccine hesitancy, and completion rates of free HPV vaccination in low-income uninsured adults

Background

Human Papillomavirus (HPV) vaccination rates remain low in the U.S., particularly among minorities and low-income, uninsured patients. We report preliminary data on a pilot study program providing education and free HPV vaccination at a clinic serving low-income uninsured adults.

Methods

From October 2020 through October 2022, we assessed HPV vaccination knowledge, awareness, and prevalence of hesitancy towards receiving the vaccine among low-income uninsured patients age 18-45. The Parents Attitudes about Childhood Vaccines (PACV) survey was modified and used to evaluate vaccine hesitancy. An educational video on HPV was shown to patients declining vaccination.

Results

43 patients were enrolled. 69.8% had heard of the HPV vaccine and 85.7% were non-hesitant based on PACV scores of 0-49. Black participants had a statistically significant higher PACV score (more hesitant) than White participants. Familiarity with the HPV vaccine correlated with lower PACV scores. Only 27% completed all three HPV vaccine doses.

Discussion

The availability of an education program together with free HPV vaccination are not sufficient to achieve adequate vaccination rates in low-income, uninsured adults. Innovative, culturally sensitive education and supportive interventions, in addition to access to free HPV vaccination, are warranted in order to improve vaccination rates in this underserved population.

Social and Structural Determinants of Health Associated with COVID-19 Vaccine Hesitancy among Older Adults in the United States

State-level COVID-19 vaccination rates among older adults have been uneven in the United States. Due to the immunocompromised nature of older adults, vaccine hesitancy increases the risk of morbidity and mortality. This study aims to determine the association between the social determinants of health, the structural determinants of health, and COVID-19 vaccine hesitancy among older adults in the United States. Secondary data from the Health and Retirement Study (HRS) dataset were used. A descriptive analysis and multinomial multivariable logistic regression were performed to examine the association of the independent variables-gender, age, race, immigration status, marital status, broadband internet access, social security income, Medicare coverage, education, and frequency of religious service-with the dependent variable, vaccine hesitancy. Compared to the respondents with no vaccine hesitancy and without the specific predictor, the respondents who reported religious attendance at least once/week were more likely to be "somewhat hesitant", divorced respondents had higher odds of being "somewhat hesitant", and older adults aged 65-74 years were more likely to be "very hesitant" or "somewhat hesitant" about the COVID-19 vaccine. Compared to the respondents with no vaccine hesitancy and without the specific predictor, females had higher odds of being "very hesitant", "somewhat hesitant", or a "little hesitant", and African Americans were more likely to be "very hesitant", "somewhat hesitant", or a "little hesitant" about the COVID-19 vaccine. Addressing these factors may limit the barriers to vaccine uptake reported among older adults and improve herd immunity among the immunocompromised population.

Despite mandated primary series, health care personnel still hesitant about COVID-19 vaccine and immunizing children

IMPORTANCE

Healthcare personnel (HCP) are important messengers for promoting vaccines, for both adults and children. Our investigation describes perceptions of fully vaccinated HCP about COVID-19 vaccine for themselves and primary series for their children.

OBJECTIVE

To determine associations between sociodemographic, employment characteristics and perceptions of COVID-19 vaccines among HCP overall and the subset of HCP with children, who were all mandated to receive a COVID-19 vaccine, in a large US metropolitan region.

DESIGN

Cross-sectional survey of fully vaccinated HCP from a large integrated health system.

SETTING

Participants were electronically enrolled within a multi-site NYS healthcare system from December 21, 2021, to January 21, 2022.

PARTICIPANTS

Of 78,000 employees, approximately one-third accessed promotional emails; 6,537 employees started surveys and 4165 completed them. Immunocompromised HCP (self-reported) were excluded.

EXPOSURE(S) (FOR OBSERVATIONAL STUDIES)

We conducted a survey with measures including demographic variables, employment history, booster status, child vaccination status; vaccine recommendation, confidence, and knowledge.

MAIN OUTCOME(S) AND MEASURES

The primary outcome was COVID-19 vaccine hesitancy for all dose types - primary series or booster doses - among HCP.

RESULTS

Findings from 4,165 completed surveys indicated that almost 17.2 % of all HCP, including administrative and clinical staff, were hesitant or unsure about receiving a COVID-19 vaccine booster, despite the NYS recommendation to do so. Depending on age group, between 20 % and 40 % of HCP were hesitant about having their children vaccinated for COVID-19, regardless of clinical versus non-clinical duties. In multivariable regression analyses, lack of booster dose, unvaccinated children, females, income less than $50,000, and residence in Manhattan remained significantly associated with vaccine hesitancy.

CONCLUSIONS AND RELEVANCE

Despite mandated COVID-19 vaccination, a substantial proportion of HCP remained vaccine hesitant towards adult booster doses and pediatric COVID-19 vaccination. While provider recommendation has been the mainstay of combatting COVID-19 vaccine hesitancy, a gap exists between HCP-despite clinical or administrative status-and the ability to communicate the need for vaccination in a healthcare setting. While previous studies describe the HCP vaccine mandate as a positive force to overcome vaccine hesitancy, we have found that despite a mandate, there is still substantial COVID-19 vaccine hesitancy, misinformation, and reluctance to vaccinate children.

Turkish Adaptation, Reliability, and Validity Study of the Vaccine Acceptance Instrument

This research study aimed to assess the reliability and validity of the Turkish version of the Vaccine Acceptance Instrument (VAI). The VAI is a 20-item Likert-type scale, with responses ranging across seven points. A systematic approach was followed to translate the scale into Turkish, involving translation, expert panel evaluation, back-translation, and pilot testing. The Vaccine Acceptance Instrument and a sociodemographic data form were used for data collection. The reliability of the scale was tested by test-retest analysis, and its internal reliability was examined by Cronbach's alpha test. The factor structure was examined using Exploratory Factor Analysis (EFA). Confirmatory Factor Analysis (CFA) was employed to assess the scale's fit. Overall, 229 participants were included in the study. In test-retest reliability analysis, the intraclass correlation coefficient of the scale was 0.992 (95% CI: 0.987-0.996). The Cronbach's alpha value of the scale was 0.824. A four-factor structure was determined. The model had an acceptable fit [χ2/df = 380.04/164 (2,317) p < 0.001, CFI = 0.91, GFI = 0.90, AGFI = 0.906, NFI = 0.90, RMSEA = 0.076]. The mean total VAI score was 112.71 ± 17.02. The low education level of the mother, being a housewife, and parents not having the COVID-19 vaccine were statistically significantly associated with a low scale score and low vaccine acceptance (p < 0.05). The Turkish adaptation of the VAI demonstrated satisfactory levels of validity and reliability following rigorous testing.

Adaptation and application of the Parent Attitudes About Childhood Vaccines survey tool in the Vietnamese language: a cross-sectional study

BACKGROUND

Parental vaccine hesitancy could lead to outbreaks of vaccine-preventable diseases. Although parental vaccine hesitancy exists in the Vietnamese community, no research has directly investigated this social phenomenon in Vietnam. Among the validated measures, the 15-item Parent Attitudes About Childhood Vaccines survey tool (PACV) was reliable for predicting vaccine-hesitant parents. However, the PACV was not available in Vietnamese. This study aimed to develop a Vietnamese version of the PACV and examine factors associated with parental vaccine hesitancy in Hue city, Vietnam.

METHODS

This study was a cross-sectional study. The English PACV was translated into Vietnamese with content and face validation. Self-administered questionnaires were distributed to 400 parents at ten commune health centres in Hue city, Vietnam. The parents were asked to answer the questionnaire again after two weeks for the test-retest reliability. The Vietnamese PACV reliability was assessed using Cronbach's alpha and McDonald's omega, and the intra-class correlation (ICC) coefficients were used for the test-retest reliability. The construct validity was tested by the hypothesis that parental vaccine hesitancy would be related to the intention of getting the children vaccinated. Exploratory factor analysis was also undertaken to determine the construct validity. Bivariate and multivariable logistic regression were used to identify the factors associated with parental vaccine hesitancy.

RESULTS

The Vietnamese PACV final version (PACV-Viet) contained 14 items. Three hundred and fifteen parents returned completed questionnaires, giving a response rate of 78.8%. The Cronbach's alpha and McDonald's omega were 0.72 and 0.70, respectively. Out of 315 parents, 84 responses were returned for test-retest reliability. All ICCs were good to excellent, ranging from 0.81 to 0.99. The PACV-Viet was confirmed to have construct validity. Using the PACV-Viet, 8.9% of the parents were found hesitant to childhood vaccination. Being unemployed and having seen the news about adverse events following immunisation were associated with parental vaccine hesitancy, with AOR = 3.2 (95% CI 1.3-8.0) and AOR = 4.5 (95% CI 1.2-16.7), respectively.

CONCLUSIONS

The PACV-Viet is a valid and reliable tool. Community outreach is necessary to alleviate parents' concerns about childhood vaccination.

Frequency of vaccine hesitancy among patients with advanced cancer

BACKGROUND

Vaccine hesitancy has become prevalent in society. Vulnerable populations, such as those with cancer, are susceptible to increased morbidity and mortality from diseases that may have been prevented through vaccination.

OBJECTIVES

Our objective was to determine patient perception of vaccine efficacy and safety and sources of information that influence decisions.

METHODS

This study was a prospective cross-sectional survey trial conducted from March 10, 2022, to November 1, 2022, at a Supportive Care Clinic. Patients completed the survey with a research assistant or from a survey link. Vaccine hesitancy was defined as a response of 2 or more on the Parent Attitudes About Childhood Vaccines (PACV-4). Perception on vaccine safety and efficacy along with the importance of sources of information were determined by a questionnaire.

RESULTS

Of the 72 patients who completed the PACV-4, 30 were considered vaccine-hesitant (42%). Of those who completed the survey alone (35), 23 (66%) were vaccine-hesitant; and of those who completed the survey with the help of a study coordinator (37), 7 (19%) were vaccine-hesitant. The most important source for decision-making was their doctor (82%, 95% CI 73-89), followed by family (42%, 95% CI 32-52), news/media (31%, 95% CI 22-41), and social media (9%, 95% CI 4-16). Clinical and demographic factors including age, gender, race/ethnicity, education level, and location of residence were not associated with vaccine hesitancy.

SIGNIFICANCE OF RESULTS

Vaccine hesitancy is present among patients with advanced cancer. The high value given to the doctor's recommendation suggests that universal precautions regarding vaccine recommendation may be an effective intervention.

Factors Underlying Vaccine Hesitancy and Their Mitigations in Saudi Arabia: Protocol for a Systematic Review

BACKGROUND

Vaccine hesitancy is a growing concern in Saudi Arabia, impacting even well-educated parents. The decision-making process involves various factors such as accessibility, trustworthy information, and the influence of social networks, reflecting a complex interplay of emotional, cultural, social, spiritual, and political dimensions.

OBJECTIVE

This review seeks to evaluate the prevalence and trends of vaccine hesitancy, identify contributing factors, and explore potential solutions to enhance immunization rates. This review aligns with global concerns, as the World Health Organization has identified vaccine hesitancy as a top global health threat.

METHODS

Our systematic review will follow the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and PICOS (Population, Intervention, Comparison, Outcomes, and Study) criteria for comprehensive assessment. We will conduct a thorough search across various databases, encompassing a wide range of vaccines, and pay special attention to vaccination campaigns and refusals. Inclusion criteria involve descriptive, observational, and analytical studies focusing on factors influencing vaccine acceptance or hesitancy. The study will use the Crowe Critical Appraisal Tool for quality assessment and perform a narrative synthesis to summarize findings thematically.

RESULTS

This systematic review is expected to unveil the prevalence and trends of vaccine hesitancy in diverse populations in Saudi Arabia, shedding light on cultural, religious, and social factors contributing to hesitancy. It aims to assess the effectiveness of implemented strategies, enable regional and global comparisons, and provide implications for tailored vaccination policies. Additionally, the review may pinpoint research gaps, guiding future investigations to address and mitigate vaccine hesitancy effectively.

CONCLUSIONS

The findings are expected to have direct policy implications and guide interventions to strengthen vaccination programs and improve public health outcomes.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

PRR1-10.2196/54680.

Modification and Validation of the Vaccine Hesitancy Scale for Turkish Adult Vaccination

Background and Purpose: For public health, it is important to investigate vaccine hesitancy, determine populations reluctant for vaccines, and investigate barriers and facilitators for vaccination in these groups. This study aims to modify and validate the Vaccine Hesitancy Scale specific to adults in Turkish society. Methods: The study, which was designed as a methodological and survey type, was conducted using a Google questionnaire with 720 participants who met the inclusion criteria with a convenient sampling method. Results: After factor and reliability analysis, a 2-factor, 10-item scale with an acceptable and perfect range of fit index values emerged. It has been observed that individuals who are young, single, do not have children, have vaccine allergy, and do not believe that the vaccine will protect the society are adversely affected by the environment, and those who do not have COVID-19 and flu have a high level of hesitancy to vaccine. Conclusions: The Vaccine Hesitancy Scale is a valid and reliable tool to detect vaccine hesitation in adults in Turkish society.

Longitudinal parental perception of COVID-19 vaccines for children in a multi-site, cohort study

OBJECTIVES

Pediatric COVID-19 vaccine hesitancy and uptake is not well understood. Among parents of a prospective cohort of children aged 6 months-17 years, we assessed COVID-19 vaccine knowledge, attitudes, and practices (KAP), and uptake over 15 months.

METHODS

The PROTECT study collected sociodemographic characteristics of children at enrollment and COVID-19 vaccination data and parental KAPs quarterly. Univariable and multivariable logistic regression models were used to test the effect of KAPs on vaccine uptake; McNemar's test for paired samples was used to evaluate KAP change over time.

RESULTS

A total of 2,837 children were enrolled, with more than half (61 %) vaccinated by October 2022. Positive parental beliefs about vaccine safety and effectiveness strongly predicted vaccine uptake among children aged 5-11 years (aOR 13.1, 95 % CI 8.5-20.4 and aOR 6.4, 95 % CI 4.3-9.6, respectively) and children aged 12+ years (aOR 7.0, 95 % CI 3.8-13.0 and aOR 8.9, 95 % CI 4.4-18.0). Compared to enrollment, at follow-up parents (of vaccinated and unvaccinated children) reported higher self-assessed vaccine knowledge, but more negative beliefs towards vaccine safety, effectiveness, and trust in government. Parents unlikely to vaccinate their children at enrollment reported more positive beliefs on vaccine knowledge, safety, and effectiveness at follow-up.

CONCLUSION

The PROTECT cohort allows for an examination of factors driving vaccine uptake and how beliefs about COVID-19 and the COVID-19 vaccines change over time. Findings of the current analysis suggest that these beliefs change over time and policies aiming to increase vaccine uptake should focus on vaccine safety and effectiveness.

Utility of the Theory of Planned Behaviour for predicting parents' intentions to vaccinate their children against COVID-19

Vaccination is a crucial form of primary prevention, and it is important to understand the factors that influence parents' decisions to vaccinate their children. The current study examines the utility of the Theory of Planned Behaviour (TPB) and anticipated affect for explaining parents' intentions to vaccinate their children against COVID-19. Parents (N = 843) living in the United States completed an online survey. The TPB variables explained 65% of the variability in parents' intentions. In addition to all three of the TPB antecedents predicting vaccine intentions, both anticipated regret of not vaccinating and anticipated positive emotions of vaccinating were associated with parent intentions. Contrary to predictions, subjective norms were a stronger predictor of intentions when perceived behavioural control was lower compared to higher. These findings help further our understanding of parent-for-child vaccine decisions in the context of novel health threats and inform intervention efforts aimed at encouraging this behaviour.

Activities, Motivations and Demographics of Provaccine Advocates

BACKGROUND

Vaccine hesitancy is a growing public health concern and has been classified as a major threat to global health by the World Health Organization. While there has been extensive research on the attitudes of vaccine-hesitant individuals, little is known about provaccination advocates. Our objectives were to describe the characteristics, attitudes, activities and motivations of provaccination advocates.

METHODS

An internet survey was conducted in July-November 2019. US vaccine advocacy groups were invited to partner in survey distribution. Participants were recruited from a convenience sample of their members. Advocacy activities were categorized as policy related, in-person or online.

RESULTS

Respondents (n = 1239) were mostly female (82%), White (87%) and highly educated (90%). Most reported Democratic political affiliation (66%). The most common occupation was health care practitioner (38%). Most respondents (90%) agreed that a policy that did not allow patients to refuse or spread-out vaccines would encourage them to choose that clinic. The most common policy-related activity was contacting an elected official about vaccines. The most common in-person activity was speaking with a friend or family member about vaccines. The most reported online activity was using social media to advocate for vaccines. The most common motivation for vaccine advocacy was a sense of responsibility as a community member.

CONCLUSIONS

Provaccine individuals engaged in a variety of advocacy activities and were motivated by responsibility to their community in addition to other factors. Continued work to better understand and motivate vaccine advocates may inform efforts to bolster vaccine confidence and influence those who accept vaccines to become advocates.

Strategies for Improving Vaccine Communication and Uptake

Vaccines have led to a significant decrease in rates of vaccine-preventable diseases and have made a significant impact on the health of children. However, some parents express concerns about vaccine safety and the necessity of vaccines. The concerns of parents range from hesitancy about some immunizations to refusal of all vaccines. This clinical report provides information about the scope and impact of the problem, the facts surrounding common vaccination concerns, and the latest evidence regarding effective communication techniques for the vaccine conversation. After reading this clinical report, readers can expect to: Understand concepts and underlying determinants of vaccine uptake and vaccine hesitancy.Understand the relationship between vaccine hesitancy and costs of preventable medical care.Recognize and address specific concerns (eg, vaccine safety) with caregivers when hesitancy is present.

Development and psychometric analysis: Fluoride varnish parent attitude, belief scale

OBJECTIVE

To develop a scale to determine parents' attitudes and beliefs regarding fluoride varnish.

DESIGN AND METHODS

This study had a cross-sectional design and was conducted between 2019 and 2021. A total of 810 parents were included in the study sample. Exploratory factor analysis (EFA), confirmatory factor analysis (CFA), discriminant validity, and convergent validity methods were used to estimate the scale validity. For reliability, the Cronbach alpha coefficient, item-total correlation coefficients, and test-retest method were used.

RESULTS

As a result of psychometric analysis, the scale was found to have a three-factor structure. The factor loads of the items were between 0.838 and 0.715. The three-factor construct showed a good fit in confirmatory factor analysis (X2 (41): 110.06, p <.001; RMSEA: 0.065; RMSR, 0.02; GFI, 0.95; and NFI, 0.94). Cronbach's α coefficient on the scale was 0.85. The item-total correlation of the scale was found to be between 0.355 and 0.626. The test-retest intra-class correlation coefficient of the scale was 0.72.

CONCLUSIONS

This study suggests that the developed scale is a reliable tool to evaluate the attitudes and beliefs of parents toward fluoride varnish. It is thought that the scale will make a contribution to public health.

Maternal worry of children contracting COVID-19 predicts vaccine uptake in young children in Vermont

Background

Young children, 6 months to 4 years of age, were the last population for whom the COVID-19 vaccines became available and remain the group with the lowest uptake. Scarce information exists on drivers of vaccine uptake in young children. The relationship between parental perceived risk of infection and child COVID-19 vaccination is unknown.

Objective

Examine the association between perceived risk of infection and early childhood vaccination.

Methods

In June 2020, perinatal women in Vermont were enrolled in a longitudinal survey study assessing life changes during the pandemic. Surveys included worry of infection, Parents Attitude about Childhood Vaccines (PACV), intention to vaccinate children with the COVID-19 vaccine, and masking behaviors. Once vaccines became available, surveys also included child vaccination status. A demographic-adjusted stepwise logistic regression was conducted to assess the relationship of worry of infection and vaccine hesitancy on child vaccination status.

Results

85 women completed baseline and follow up surveys. Participants were highly adherent to adult COVID vaccines with 93 % at least partially vaccinated and only 3 % demonstrated general childhood vaccine hesitancy on the PACV. However, in this highly adherent population, only 61 % of young children are vaccinated. In univariate [OR = 7.35 95 % CI (2.70 to 20.02)] and demographic adjusted [OR = 6.03 95 % CI (1.30 to 27.90)] models, current worry about child infection was associated with higher odds of child vaccination. Previously established predictors, vaccine hesitancy [OR = 0.91 95 % CI (0.84 to 0.99)] and younger maternal age [OR = 1.33 95 % CI (1.07 to 1.65)] were again associated lower odds of child vaccination.

Conclusion

Among vaccine adherent parents, worry of infection was a strong predictor of vaccine uptake. Continued efforts to articulate the potential morbidity of COVID in young children, along with established methods to address general vaccine hesitancy may aid in COVID vaccine uptake in this population.

The frequency and determinants of vaccine hesitancy among parents of preschool and kindergarten students in Edirne central district

PURPOSES

The aim of our study is to determine the frequency of vaccine hesitancy and the associated factors among parents with preschool children in a city center.

DESIGN AND METHODS

We conducted a cross-sectional study among parents of preschool children in the central district of Edirne. The cluster sampling method was applied. The data collection tools consisted of a questionnaire designed by the researchers and The Parent Attitudes about Childhood Vaccines (PACV) Scale. The correlations between vaccine hesitancy among parents factos such as the vaccine's content, adverse effects, religious beliefs, media coverage, reliance on community leaders, and the usage of complementary and alternative medical methods were examined.

RESULTS

The study group consisted of 315 individuals and the prevalence of vaccine hesitancy among participants was determined to be 13%. The mean PACV scale score of the parents was 29.76 ± 16.62. According to multivariate analyses, the odds ratios (%95 CI) of variables that were statistically significantly associated with parental vaccine hesitancy were as follows: being a mother 8.77 (1.02-75.07), vaccine side effects 2.91 (0.93-9.16), low/equal income level 6.80 (2.45-18.86), low/high income level 5.74 (1.65-20.0), religious reasons 3.33 (1.34-8.25), and media influence 9.53 (3.75-24.18).

CONCLUSION

Overall, vaccine hesitancy was observed at one in every 7 parents in the central district of Edirne province, and the main determinants of hesitancy were low-income status, media influence and religious beliefs, advers effects and being mother. Community-based intervention programs should be established to combat vaccine hesitancy.

PRACTICAL IMPLICATIONS

The PACV scale is recommended for detecting community-based vaccine hesitancy.

Relations of behavioral inhibition and activation system sensitivities with vaccination outcomes: Investigating the mediating role of vaccine hesitancy in older adults

The study of behavioral inhibition system (BIS) and behavioral activation system (BAS) sensitivities has produced a multitude of models and frameworks to better understand decision-making and behavior. We extend this research to the study of a vaccination by exploring the relation of BIS and BAS sensitivities with vaccination willingness, receipt, and word-of-mouth. We also assess whether dimensions of vaccine hesitancy mediate these relations, testing whether they are viable explanatory mechanisms. By conducting a multi-wave survey study, our results support that BIS sensitivity does not meaningfully relate to vaccine hesitancy or vaccination outcomes. On the other hand, BAS sensitivity related to detrimental vaccination outcomes, and these effects were mediated by vaccine hesitancy dimensions associated with perceptions that vaccines cause health risks and are not needed for healthy individuals. Based on extant BIS and BAS theory, these results suggest that certain people may see refraining from vaccination as a nonpunishment.

Worldwide Child Routine Vaccination Hesitancy Rate among Parents of Children Aged 0-6 Years: A Systematic Review and Meta-Analysis of Cross-Sectional Studies

Routine vaccine hesitancy is a major global health challenge observed in over 190 countries worldwide. This meta-analysis aims to determine the worldwide prevalence of routine vaccination hesitancy among parents of children aged 0-6. An extensive search was conducted in four scientific databases: PubMed, Scopus, Web of Science, and the Cochrane Library. Studies were included if they reported hesitancy related to WHO-recommended routine immunizations for children under 7 years of age. A single-arm meta-analysis was performed using the OpenMeta[Analyst] software. An initial search retrieved 5121 articles, of which only 23 publications, involving 29,131 parents, guardians, and caregivers from over 30 countries met the inclusion criteria and quality assessment. The cumulative prevalence of parental vaccine hesitancy was found to be 21.1% (95% CI = 17.5-24.7%, I2 = 98.86%, p < 0.001). When stratifying the prevalence of vaccine hesitancy per WHO region, significant variations were observed, ranging from 13.3% (95% CI = 6.7-19.9%, I2 = 97.72%, p < 0.001) in the Region of the Americas to 27.9% (95% CI = 24.3-31.4%) in the Eastern Mediterranean region. The study findings highlight the need for healthcare providers and governments to develop and improve comprehensive programs with communication strategies to reduce parental vaccine hesitancy.

College students' willingness to accept COVID-19 vaccines

Objective To assess college students' willingness to accept COVID-19 vaccines and the factors that influence their decisions. Participants: Traditional (aged 18-23) undergraduate students at a university in central Texas. Methods: An online survey was administered in fall 2020 to 614 students stratified by sex and race/ethnicity. Results: 40.9% of students planned to take the vaccine as soon as possible, 37.1% eventually, 11.4% only if required, and 10.6% did not intend to be vaccinated. Analyses indicated that gender, major/minor, political affiliation, receiving a flu shot in the preceding 12 months, perception of risk for COVID-19, and vaccine hesitancy were all associated with willingness to accept COVID-19 vaccines. Conclusion: Results confirm that no one-size-fits-all approach to promoting COVID-19 vaccination among college students is possible. Instead, administrators interested in increasing vaccine uptake should address concerns of specific groups, while also utilizing the prosocial beliefs of college students (e.g., being vaccinated will protect others).

University students' willingness to receive a COVID-19 vaccine in the United States

The disproportionate number of COVID-19 cases and deaths in the United States (US) requires understanding of health behaviors that contributed to low acceptance of public health guidelines. University students were at low risk for complications from COVID-19 infections but at high-risk for infecting others. It is important to understand which characteristics influenced willingness to receive the COVID-19 vaccine. The purpose of this cross-sectional study was to explore the social factors and identities that predicted university students' willingness to receive COVID-19 vaccines before one was available. This study used a stratified random sample from a Midwestern public university in 2020 (N = 614). Results suggest hesitancy toward childhood vaccinations, noncompliance with mask-wearing and large-group-avoidance guidelines, and conservative political ideology increased the odds of being unwilling to receive a COVID-19 vaccination. However, higher subjective social status and male gender increased the odds of being willing to be vaccinated.

Knowledge, Attitudes, Intentions and Vaccine Hesitancy among Postpartum Mothers in a Region from the Northwest of Romania

This study aims to identify the presence of vaccine hesitancy and the factors that could have determined it in a group of mothers in the postpartum period, with an evaluation of both the level of knowledge and information, as well as the attitudes, perceptions, intentions and sources of information about vaccination. The study was based on a survey-Vaccine Hesitancy Identification Survey-applied in two maternity wards from Bihor County and structured into six subscales (34 items). Based on the answers to the key questions ("Which of the following statements best describes your plans for vaccinating your child?"-item 1 of subscale 4; "Overall, how hesitant do you consider yourself to be about vaccinating your child?"-item 4 of subscale 4), we identified two groups: the group of mothers without hesitant behavior (non-hesitant), called the group pro vaccine (GPV), and the group of mothers with hesitant behavior, called the group non vaccine (GNV). Vaccine hesitancy was identified in our study in 47.28% of the participants (191 of the 404 mothers included). Most of them come from an urban environment (57.59%), have university and post-secondary education (58.64%) and are prim parous (58.64%). The behavior of participants from GNV is influenced by a low level of knowledge and information regarding vaccination and by concerns related to adverse reactions, new vaccines and the number of vaccines administered. Also, this group is characterized by an increased perception of the risks related to vaccination, while the perception of the risks associated with the disease is low. For all subscales, important differences were registered between the two groups in favor of GPV, a group characterized by positive attitudes and perceptions and a better level of knowledge compared to GNV. This study aims to represent a starting point for the organization and running of information campaigns regarding vaccination at the level of Bihor County, especially in areas with low vaccination coverage, where this behavior is identified.

A Webinar to Improve Parental COVID-19 Vaccine Hesitancy

INTRODUCTION

COVID-19 is a deadly worldwide pandemic and has led to rapid vaccine development. Vaccinating children is a key step to ending the pandemic.

METHOD

This project used a pretest-posttest design to determine if a 1-hr webinar improved parental COVID-19 vaccine hesitancy. The webinar was streamed live and later posted to YouTube. Parental vaccine hesitancy was measured by an adapted version of the Parental Attitudes about Childhood Vaccine survey for COVID-19 vaccines. Parental Attitudes about Childhood Vaccine data were collected during the live session and from YouTube for 4 weeks after the original webinar air date.

RESULTS

After calculating a Wilcoxon signed rank test to measure the change of vaccine hesitancy before (median, 40.00) and after (median, 28.50) the webinar, there was a statistically significant difference (z = 0.003, p = .05).

DISCUSSION

The webinar demonstrated improved vaccine hesitancy and provided scientifically based vaccine information to parents.

Human-centred design bolsters vaccine confidence in the Philippines: results of a randomised controlled trial

BACKGROUND

The public's confidence in vaccinations has eroded, and anti-vaccination movements have gained traction around the world, including in the Philippines. 'Salubong', a Filipino term, refers to welcoming someone back into one's life and elicits ideas about friendship and family relationships. We extended this concept to vaccines in efforts to design an intervention that would re-welcome vaccines into homes.

METHODS

Using human-centred design, we developed and refined a story-based intervention that engages Filipino families, community leaders and community health workers. We conducted a randomised controlled trial among 719 caregivers of small children to test the developed intervention against a control video. We assessed the binary improvement (improvement vs no improvement) and the amount of improvement in vaccine attitudes and intentions after intervention exposure.

RESULTS

Although the intervention group began with marginally higher baseline vaccine attitude scores, we found that 62% of the intervention group improved their vaccine attitude scores versus 37% of the control group (Fisher's exact, p<0.001). Among individuals whose scores improved after watching the assigned video, the intervention group saw higher mean attitude score improvements on the 5-point scale (Cohen's d=0.32 with 95% CI 0.10 to 0.54, two-sided t-test, p<0.01). We observed similar patterns among participants who stated that they had previously delayed or refused a vaccine for their child: 67% of 74 in the intervention group improved their vaccine attitude scores versus 42% of 54 in the control group (Fisher's exact, p<0.001). Among the subset of these individuals whose scores improved after watching the assigned video, the intervention group saw higher mean attitude score improvements on the 5-point scale that were marginally significant (Cohen's d=0.35 with 95% CI -0.01 to 0.70, two-sided t-test, p=0.06).

CONCLUSIONS

Our results provide solid evidence for the potential of co-designed vaccine confidence campaigns and regulations.

Delays in the vaccination of infants between 2 and 18 months of age: associated factors in Chile

INTRODUCTION

Infant vaccination has significantly reduced the morbidity and mortality of transmittable diseases worldwide. Its coverage is high (85%); however, partial or suboptimal vaccination has been an important public health problem. This study aimed (1) to design and explore the psychometric features of a questionnaire to determine the reasons for this partial or suboptimal vaccination; and 2) to determine the factors associated with delaying Diphtheria, Tetanus, Poliomyelitis (DTaP) vaccination.

MATERIAL AND METHODS

This study contained two parts. In Part One, a questionnaire was created by the research team and then validated by a committee of experts in the field and a group of parents. It included the following contents: sociodemographic variables, features of the vaccination services, history of vaccination, and attitudes and perceptions about vaccination. Part Two was a cross-sectional study, recruiting private and public healthcare centers to explore the psychometrics features of the instrument, performing exploratory factor analysis, and determining the associated factors with DTaP vaccination delay throughout multivariable regression models.

RESULTS

Initially, six experts validated the questionnaire. For instance, on a scale of 1 to 5, the general evaluation of the questionnaire was ≥ 4 for all the experts. Additionally, five experts considered that most of the questions were easy to understand, and all thought the questionnaire had a clear and logical organization. The resulting questionnaire included the "Trust and positive attitude towards vaccination" scale, which had a good structure of items and internal consistency (α = 0.7918). Six healthcare centers were recruited in the second part of the study, and 715 people answered the questionnaire. Not being the mother who brings the child to the health center, having more than one child, and having a history of previous vaccination delays increased the risk of delaying vaccination. Attending the healthcare center for a reason other than only vaccination, obtaining information about vaccines from the Internet, and having higher trust and positive attitudes to vaccination reduced the risk of delay.

CONCLUSIONS

First study during the pandemic to explore the role of different factors on the risk of DTaP vaccination delay in Latin America. The findings highlighted the importance of trust in the vaccination system. The instrument presented in this article may help the scientific community evaluate future interventions to increase trust and positive attitudes toward the vaccination process.

Exploring HPV vaccine knowledge, attitudes, barriers and information sources among parents, health professionals and teachers in Kazakhstan: a mixed-methods study protocol

INTRODUCTION

Human papillomavirus (HPV) is a prevalent sexually transmitted infection linked to certain types of malignant neoplasms, notably cervical cancer (CC). In Kazakhstan, a high prevalence of high oncogenic HPV types (HR-HPV) has been observed, and CC ranks as the second most common malignancy among women with a crude incidence rate of 18.3 cases per 100 000 women. The HPV vaccine, developed as the primary prevention measure against HPV infection, including the most prevalent HR-HPV, received approval from the WHO in 2009. In 2014, Kazakhstan initiated HPV vaccination as a pilot project in four sub-national regions; however, it was later in 2017 discontinued due to widespread parental refusal influenced by negative media reports. This study aims to examine knowledge, attitudes, information sources, barriers to HPV vaccination and factors associated with HPV vaccination hesitancy among different target groups in Kazakhstan prior to the HPV vaccine re-launch announced by the Ministry of Health.

METHODS AND ANALYSIS

This mixed-method-designed research comprises quantitative and qualitative components. Data on HPV awareness, attitudes towards HPV vaccination and sources of information will be collected through an online survey administered by parents and legal guardians, health professionals, and schoolteachers in the Republic of Kazakhstan between January 2023 and January 2024. Additionally, qualitative data on Kazakhstani parental beliefs and attitudes toward HPV vaccination will be collected through online focus group discussions.

ETHICS AND DISSEMINATION OF RESULTS

The study has been approved by the local ethics committee at the Kazakhstan Medical University "Higher School of Public Health" (KMU "KSPH") (No. 138 of 31.05.2021). The results will be reported in publications, at conferences among researchers and healthcare and school education professionals in Kazakhstan, and internationally.

Psychometric properties and reliability of the Brazilian version of Parent Attitudes about Childhood Vaccine (PACV-BR)

OBJECTIVE

To evaluate the psychometric properties and reliability of the Brazilian version of the tool Parent Attitudes about Childhood Vaccine (PACV-BR).

METHODS

The sample included 110 parents of children up to two years old served by Family Health Basic Units. The tool's internal consistency and factor validity were respectively assessed by Cronbach's alpha and exploratory factor analysis (EFA). The test-retest reliability was assessed by the intraclass correlation coefficient (ICC).

RESULTS

The EFA results indicated a proper structural adequacy of the PACV-BR (15 items and two factors). The reliability generated Cronbach's alpha values between 0.715 and 0.854 for the items, of 0.918 for the tool as a whole, of 0.877 for factor 1 and of 0.825 for factor 2, in addition to an ICC of 0.984.

CONCLUSIONS

The PACV-BR showed evidence of construct validity and reliability.

Vaccine hesitancy for COVID19: what is the role of statistical literacy?

Introduction

Vaccination is an important measure used to control the spread of COVID19. The estimation of risk versus benefit of vaccination is based on the understanding of information about the vaccine. Statistics are frequently part of communications about COVID19. Individuals that do not have an adequate foundation of statistical knowledge may not be able to properly assess associated risks and benefits. This study aims to assess the association between statistical literacy and hesitation to receive the COVID19 vaccine.

Methods

A nationally representative sample of 2,138 adults, recruited through CINT United States, Inc., (Lawrenceville, NJ; http://www.cint.com), completed an internet survey in the summer of 2021. This survey collected demographic measures and information about COVID19 vaccination status. The competency of respondents on various basic statistical concepts was assessed along with the corresponding confidence of respondents in their answers. A multivariable logistic regression model was constructed to assess the relationship between vaccine hesitancy and statistical literacy while controlling for covariates of interest.

Results

Statistical literacy was found to have a negligible association with COVID19 vaccine hesitancy (OR 1.01; 95% CI 1.00-1.02). In addition, differences in the proportion receiving the COVID19 vaccine between political affiliations, income levels, race groups, and ethnicities were observed.

Discussion

The statistical knowledge of the general American public is not commensurate with the need to be literate in basic statistical concepts in the data-driven world in which we live. An effective way to stem vaccine hesitancy may rely on increased statistical knowledge to not be biased by preconceived beliefs shaped by misinformation.

Prospective Attitudes towards Respiratory Syncytial Virus (RSV) Vaccination: Validation of a Survey Instrument among Young Females in Jordan Pending Vaccine Authorization

In May 2023, the U.S. FDA advisors endorsed Pfizer's pregnancy-administered vaccine (branded ABRYSVO) to protect infants from respiratory syncytial virus (RSV) infection. Vaccination can reduce the burden of RSV-related respiratory disease, with previous studies showing its substantial medical and financial burden in Jordan. However, pregnant women may exhibit hesitancy to get vaccinated due to concerns about potential risks to themselves or their fetuses. This study aimed to assess the acceptance of the RSV vaccine among young females and identify the determinants influencing their decision using a newly constructed instrument. A survey instrument was developed and validated, comprising 26 items to measure RSV vaccine acceptance. A cross-sectional study design was employed, with data collection from a sample of females aged 18 to 45 residing in Jordan during 5-6 July 2023, using a convenient approach via an online distributed questionnaire. The final study sample comprised 315 respondents, with 67.6% who have heard of RSV before the study. If the vaccine was safe, effective, and provided freely, 70.2% showed willingness to get the RSV vaccine, 15.2% resisted, and 14.6% were hesitant. Principal component analysis identified six internally consistent sub-scales with the following suggested themes: Advice, Burden, Conspiracy, Dangers, Efficiency, and Fear, comprising 21 items collectively as assigned as the "ABCDEF" scale for RSV vaccine acceptance. RSV vaccine acceptance in this study was associated with the advice and fear constructs. The validated survey instrument successfully captured important determinants of RSV vaccine acceptance among young females. RSV vaccine promotion efforts should focus on the following: enhancing vaccine education, improving trust in healthcare institutions and providers, reducing burdens through resolving cost issues and focusing on the role of social support, addressing safety concerns, and tailoring communication strategies to effectively promote the benefits of the vaccine. These insights can inform public health policies and interventions aiming to promote RSV vaccination and mitigate the burden of RSV-related diseases among infants. Follow-up studies are recommended with pregnant women as the target group to assess their attitude towards RSV vaccination and to confirm the validity of the conceived ABCDEF survey instrument.

Bibliometric and visual analysis of vaccination hesitancy research from 2013 to 2022

Although vaccination is regarded as one of the most significant achievements of public health, there also exists the phenomenon of vaccination hesitancy which refers to delay in acceptance or refusal of vaccination despite availability of vaccination services. In this study, we conducted a bibliometric analysis to provide a comprehensive overview of vaccination hesitancy research from 2013 to 2022. All related publications were retrieved from the Web of Science Core Collection Database. Information on annual publications, countries, organizations, journals, authors, keywords, and documents was analyzed adopting the bibliometix R-package, VOSviewer, and CiteSpace software. A total of 4042 publications were enrolled. The annual publications increased slightly before 2020 but had an extremely dramatic increase from 2020 to 2022. The United States contributed the most articles and had the greatest collaboration with other countries and organizations. The London School of Hygiene & Tropical Medicine was the most active institution. Vaccine was the most cited and influential journal while Vaccines was the most productive journal. It was Dube E who was the most productive authors with the highest h-index. The most frequent keywords were "vaccine hesitancy," "COVID-19," "SARS-CoV2," "immunization," "attitudes," and "willingness." Vaccination hesitancy to some extent hinders the achievement of global public health. The influencing factors vary across time, space, and vaccines. The COVID-19 pandemic and the development of COVID-19 vaccines have made this issue the focus of interest. The complexity and specific contexts of influencing factors of vaccination hesitancy require further study and will potentially be the focus of future research direction.

The relationship between having a usual source of primary care and COVID-19 parental vaccine hesitancy: A nationwide survey among Japanese mothers

Background

Studies have shown that a usual source of care increases the receipt of child preventive care; however, the relationship between having a usual source of primary care and COVID-19 parental vaccine hesitancy has not been fully investigated. The aims of this study were to elucidate the characteristics of mothers with a primary care physician, and to explore the relationship between having a usual source of primary care and COVID-19 parental vaccine hesitancy among mothers in Japan.

Method

This cross-sectional survey-based study included 4516 mothers. Using a chi-square test, the characteristics of mothers with and without a primary care physician were compared. Poisson regression was applied to evaluate the relationship between having a usual source of primary care and parental COVID-19 vaccine hesitancy.

Results

Mothers with a usual source of primary care had higher education, lower mental distress, had younger children, and were less hesitant toward the child's COVID-19 vaccination. Vaccine hesitancy was observed in 39.8% of mothers with a usual source of primary care and 45.5% of those without. Poisson regression analysis showed that mothers with a primary care physician were less vaccine-hesitant (IRR = 0.90, 95% CI = 0.84-0.96) after adjusting for potential confounders.

Conclusion

This study suggested that having a usual source of primary care may contribute to lower parental COVID-19 vaccine hesitancy. However, the high vaccine hesitancy rate, even among mothers with a usual source of primary care, warrants healthcare providers to be equipped to help parents make informed decisions about vaccination through the continuity of care.

Acceptance of COVID-19 vaccination among parents of children with autism and other neurodevelopmental disorders in Saudi Arabia: a cross-sectional study

BACKGROUND

Acceptance of COVID-19 vaccination was noticed to be less common among parents of children with autism spectrum disorder (ASD) and other neurodevelopmental disorders. This study aimed to explore the beliefs and willingness of parents of children with neurodevelopmental disorders about COVID-19 vaccine and understand how certain factors influencing the vaccine decision-making process differ between them and other parents' groups.

METHODS

A cross-sectional study was conducted between August to November 2021. An Arabic online survey was distributed in August 2021 to collect the study's data. 400 parents from all the major regions in Saudi Arabia participated in and shared their beliefs about the new COVID-19 vaccination for their children.

RESULTS

Out of 400 participants, 381 of them were eligible to answer the survey (95.2%). The total number of parents of children with neurodevelopmental disorder was 158 (41.5%), was compared to responses of parents of heathy children 223 (58.5%). 85 (53.8%) of them were ready to vaccinate their children with COVID-19 vaccine. While 36 (22.8%) were hesitant, the rest 37 (23.4%) did not want to vaccinate their children at all. Only a small number 16 (10.1%) have beliefs of vaccines as a cause of their child's neurodevelopmental disorder. A total of 79 out of 131 responses were received from both parents' groups. Fear of long-term side-effects was the most common reason reported by 41 responders out of 64 (64.06%) from parents of healthy children and 38 responders out of 67 (56.71%) from parents of diagnosed children. Another reason reported by parents of younger children in both groups was the child's age. Having a healthcare relative worker was significantly associated with the vaccine decision making (p < .001).

CONCLUSION

The acceptance rate of COVID-19 vaccination of parents of children with neurodevelopmental disorders was low compared to the parents of healthy children in Saudi Arabia. Authorities can benefit from this study results to offer more accessible information about the vaccine importance and safety to the targeted population.

Integrating the person-centered approach with the study of vaccine hesitancy: Applying latent profile analysis to identify vaccine hesitancy subpopulations and assess their relations with correlates and vaccination outcomes

In scholarly and popular discussions of vaccine hesitancy, authors have repeatedly referred to different "types" of vaccine hesitant individuals; however, almost all modern research on vaccine hesitancy utilizes variable-centered approaches to identify the relation of variables rather than a person-centered approach to identify subpopulations, which suggests that a discrepancy exists between conceptual discussions and empirical research on vaccine hesitancy. For this reason, the current article conducts a latent profile analysis (LPA) on the dimensions of a well-supported vaccine hesitancy measure, which assess hesitancy towards vaccines in general. We also assess the relations of the resultant profiles (e.g., subpopulations) with relevant self-reported outcomes and correlates, wherein most of our outcomes are associated with COVID-19 and flu vaccines. Our LPA results support the existence of eight vaccine hesitancy profiles. The profile with the most unfavorable vaccination outcomes (e.g., willingness, receipt, and word-of-mouth) was associated with greater perceptions that vaccines cause health risks and unneeded when healthy; the profile with the most favorable vaccination outcomes was associated with low levels of all vaccine hesitancy dimensions. The other profiles produced a clear gradient between these two extremes. The profiles also differed regarding their standing on correlates, but the clearest difference was their relation with political orientation. Profiles with more unfavorable vaccination outcomes were associated with conservatism, whereas profiles with more favorable vaccinations outcomes were associated with liberalism. These results provide a new perspective for current understandings of vaccine hesitancy and open several avenues for future research.

Associated factors with vaccine hesitancy in mothers of children up to two years old in a Brazilian city

This study aims to evaluate maternal vaccine hesitancy and its associated factors. This is a cross-sectional study of a probabilistic sample of 450 mothers of children born in 2015, living in a Brazilian city, and who was, at the time of data collection, more than two years old. We used the tool proposed by the World Health Organization (10-item Vaccine Hesitancy Scale). To assess its structure, we performed, exploratory and confirmatory factor analyses. We performed linear regression models to evaluate the factors associated with vaccine hesitancy. The factor analysis showed two components for the vaccine hesitancy scale: lack of confidence in vaccines and risk perception of vaccines. High family income was associated with lower vaccine hesitancy (greater confidence in vaccines and lower risk perception of vaccines), while the presence of other children, regardless of birth order, in the family was associated with lower confidence in vaccines. A good rapport with health professionals, willingness to wait for the vaccination and the getting vaccinated through campaigns were associated with greater confidence in vaccines. The deliberate delay or decision not to vaccinate their children and previous experience with adverse reactions to the vaccine were associated with lower confidence in vaccines and greater risk perception of vaccines. Health care providers, especially nurses, play a relevant role to address vaccine hesitancy, guiding vaccination through a trustworthy rapport.

Vaccine Hesitancy Among Parents and Its Determinants During the Era of COVID-19 in Taif City, Saudi Arabia

Background Vaccine hesitancy is a growing concern worldwide, particularly during the COVID-19 pandemic. The aim was to investigate vaccine hesitancy and its determinants among parents in Taif, Saudi Arabia. Methods A cross-sectional study was conducted among parents using a validated and reliable questionnaire, the parent attitudes about childhood vaccines (PACV). Parents of children aged (two months to seven years) attending primary health care centers (PHCC) outpatient clinics were selected using a stratified sampling technique and interviewed to fill out the pre-structured questionnaire. Result The study included 301 parents, with 41.2% between the ages of 30-39 years and 25.2%% between 40-49 years. Mothers constituted 69.1% of the respondents. The most common sources of information regarding vaccinations were the doctor (34.9%), the internet (27.9%), and social media (16.6%). COVID-19 influenced the beliefs of more than half (52.5%) of parents regarding the importance of vaccinations. The median PACV score for vaccination hesitancy was 23.3/100, interquartile range (IQR) (13.3-33.3). The highest hesitation was among the age group of 30-39 years old (21.6%) and those whose beliefs were not influenced by the COVID-19 pandemic (16.1% vs. 5.7%) (p-value=0.003). The study found a significant difference in vaccine hesitancy rates between the different sources of information (p-value <0.001); parents who got their information about vaccinations from social media were more likely to be hesitant about vaccinations (40%). Concerns about side effects (93.8%), thinking that vaccines are not safe (84.4%), and thinking that fewer vaccines are needed (78.1%) were the top three factors influencing vaccine hesitancy. Conclusion This study urges promoting vaccine uptake through healthcare providers and combating vaccine misinformation on social media. Additionally, addressing safety concerns and misconceptions about vaccine necessity, and focusing on first-time parents, younger parents, and those with lower socioeconomic status are recommended strategies to improve vaccine uptake rates.

Adaptation and Validation of a French Version of the Vaccination Attitudes Examination (VAX) Scale

Over the past decades, vaccination has proven to be largely beneficial to global health. Despite vaccine efficacy, the French population has been recently affected by more anti-vaccination attitudes and vaccine refusal, and it is therefore necessary to validate tools to study this health issue. The Vaccination Attitudes Examination scale (VAX) is a 12-item questionnaire targeting adults that assesses general attitudes towards vaccination. The aims of the study were to translate and adapt the original English version of the scale into French and to test the psychometric properties of the scale in a French-population-based sample of adults. We included 450 French speaking adults that completed the French VAX and other questionnaires to assess convergent and divergent validities. Exploratory and confirmatory factor analyses showed that the French version of the VAX replicated the factorial structure of the original scale. Moreover, it demonstrated high internal consistency, good convergent and divergent validities, and excellent temporal stability. Furthermore, scores on the scale differentiated vaccinees from non-vaccinee respondents. Results on the scale provide us with insight into factors involved in vaccine hesitancy in France, therefore allowing French authorities and policy makers to address these specific concerns and improve vaccine acceptance rates in this country.

A national survey of parents' views on childhood vaccinations in Ireland

INTRODUCTION

Vaccine hesitancy is complex and multifactorial and a threat to global health. Uptake of some recommended childhood immunisations in Ireland remains below World Health Organisation targets. The aim of this study was to determine factors associated with vaccine uptake in Ireland.

METHODS

A cross-sectional, national survey of parental attitudes towards childhood vaccination for children aged 0 to 48 months was conducted between June and August 2021 (N = 855). A descriptive analysis of questionnaire responses was conducted. Univariate and multivariable logistic regression models were constructed to identify the association of demographic parental characteristics and parental vaccine attitude scores with a delay in or lack of parental vaccine acceptance.

RESULTS

There was a strongly positive sentiment towards childhood vaccinations. Self-reported uptake of recommended vaccines was 96.1 % with a strong belief in the importance (94.4 %) and safety (89.2 %) of vaccines. Trust in official vaccine information sources was high; 91.5 % and 89.2 % reported trust in the vaccine information provided by healthcare professionals and the Health Service Executive (HSE) respectively. The most commonly identified reasons for missed vaccines were concerns about safety and vaccine side effects. In multivariable regression analysis, parental trust in official vaccine information sources was a significant predictor of vaccine acceptance. For every one unit increase in the median parental trust in official vaccine information score, the odds of a parent having reduced vaccine acceptance decreased significantly (aOR 0.27 95 % CI 0.16, 0.46, p < 0.001).

CONCLUSION

Understanding parental attitudes towards vaccination will inform the development of evidence-informed, targeted interventions to increase childhood immunisation uptake. Vaccine information for parents should focus on vaccine safety and public health action should be taken to build trust and engage communities in order to increase and sustain the uptake of childhood vaccines delivered as part of the national childhood primary immunisation programme in Ireland.

Evaluating COVID-19 vaccination intentions and vaccine hesitancy among parents of children with autism spectrum disorder

As the global vaccination mass campaign against COVID-19 extended to children aged 5 to 11 years, some parents remained hesitant about their children being administered the vaccine despite data supporting its safety. Parent vaccine hesitancy (PVH) may have predisposed certain groups of children, particularly those with autism spectrum disorder (ASD), to COVID-19 when other neurotypical children would have been vaccinated. We investigated the current PVH in 243 parents of children with ASD and 245 controls using the Parent Attitudes about Childhood Vaccines (PACV) scale. The study was conducted in Qatar from May to October 2022. Overall, 15.0% [95% CI 11.7%; 18.3%] of parents were vaccine-hesitant, with no difference (p = 0.054) between groups (ASD children [18.2%] vs. controls [11.7%]). The only sociodemographic factor associated with higher vaccine hesitancy was being a mother (as compared to being a father). The COVID-19 vaccine receipt rate at the time of the study did not differ between ASD (24.3%) and non-ASD groups (27.8%). Around two-thirds of parents of children with ASD refused or were unsure about vaccinating their children against COVID-19. We found that the intent to vaccinate against COVID-19 was higher in parents who were married and in those with a lower PACV total score. Continued public health efforts are needed to address vaccine hesitancy among parents.

The Willingness toward Vaccination: A Focus on Non-Mandatory Vaccinations

The Special Issue "The Willingness toward Vaccination: A Focus on Non-mandatory Vaccinations", published in the journal Vaccines, has the main aim of gathering more data on vaccine hesitancy and the willingness of individuals to receive vaccinations, particularly in the context of non-mandatory vaccines. The aim is to address vaccine hesitancy and improve vaccine coverage rates, in addition to identifying the determinants of vaccine hesitancy itself. This Special Issue garners articles that examine the external and internal factors that can influence the decision-making process of individuals regarding vaccination. Given that vaccine hesitancy is present in a significant part of the general population, it is crucial to have a better analytical understanding of the areas where hesitancy arises to determine appropriate strategies to address this issue.

Prevalence of influenza-specific vaccination hesitancy among adults in the United States, 2018

BACKGROUND

The role of vaccine hesitancy on influenza vaccination is not clearly understood. Low influenza vaccination coverage in U.S. adults suggests that a multitude of factors may be responsible for under-vaccination or non-vaccination including vaccine hesitancy. Understanding the role of influenza vaccination hesitancy is important for targeted messaging and intervention to increase influenza vaccine confidence and uptake. The objective of this study was to quantify the prevalence of adult influenza vaccination hesitancy (IVH) and examine association of IVH beliefs with sociodemographic factors and early-season influenza vaccination.

METHODS

A four-question validated IVH module was included in the 2018 National Internet Flu Survey. Weighted proportions and multivariable logistic regression models were used to identify correlates of IVH beliefs.

RESULTS

Overall, 36.9% of adults were hesitant to receive an influenza vaccination; 18.6% expressed concerns about vaccination side effects; 14.8% personally knew someone with serious side effects; and 35.6% reported that their healthcare provider was not the most trusted source of information about influenza vaccinations. Influenza vaccination ranged from 15.3 to 45.2 percentage points lower among adults self-reporting any of the four IVH beliefs. Being female, age 18-49 years, non-Hispanic Black, having high school or lower education, being employed, and not having primary care medical home were associated with hesitancy.

CONCLUSIONS

Among the four IVH beliefs studied, being hesitant to receiving influenza vaccination followed by mistrust of healthcare providers were identified as the most influential hesitancy beliefs. Two in five adults in the United States were hesitant to receive an influenza vaccination, and hesitancy was negatively associated with vaccination. This information may assist with targeted interventions, personalized to the individual, to reduce hesitancy and thus improve influenza vaccination acceptance.