Determinant Factors of COVID-19 Vaccine Hesitancy Among Adult and Elderly Population in Central Java, Indonesia

Integrating health belief model and theory of planned behavior to assess COVID-19 vaccine acceptance among urban slum people in Bangladesh

INTRODUCTION

The vaccination against coronavirus disease 2019 (COVID-19) has been identified as a promising strategy to reduce the severity of the pandemic. Despite the safe and effective COVID-19 vaccines, bringing socioeconomically disadvantaged people under vaccination coverage has been challenging for developing countries like Bangladesh. Therefore, this study explored the determinants of vaccine acceptance among urban slum residents of Bangladesh using the Health Belief Model (HBM) and Theory of Planned Behavior (TPB).

METHODS

A face-to-face survey of 400 urban slum dwellers in two large cities in Bangladesh was conducted between July 5 to August 5, 2021. The questionnaire included vaccine acceptance, socio-demographics, health-related characteristics, trust in health authorities, reasons for vaccine hesitancy, and dimensions of HBM and TPB frameworks. Hierarchical logistic regression was performed to evaluate the association between these characteristics and vaccination acceptance.

RESULTS

Around 82% (n = 327) of respondents were willing to accept the COVID-19 vaccine. In a fully adjusted model, respondents with secondary level education had higher intention (OR = 46.93, 95%CI = 1.21-1807.90, p < 0. 05) to accept COVID-19 vaccine. Respondents with bad (OR = 0.11, 95%CI = 0.01-0.35, p<0.05) or very bad (OR = 0.01, 95%CI = 0.01-0.35, p<0.05) health conditions were less interested in the COVID-19 vaccination. In regard to HBM dimensions, greater perceived susceptibility (OR = 1.75, 95% CI = 1.12-2.75, p < 0.05), and perceived benefits (OR = 3.28, 95% CI = 1.17-6.00, p < 0.001) were associated with a greater willingness to get vaccinated. In regard to TPB, higher self-efficacy in preventing illness without the vaccine increased the desire to get vaccinated (OR = 1.55, 95% CI = 1.02-2.37, p < 0.05). Fear of unknown side effects, religious beliefs, contraindications to vaccination, and insufficient information on the vaccine were the main reasons for vaccine hesitancy.

CONCLUSIONS

These findings offer valuable insights for policymakers in Bangladesh to design targeted interventions that address vaccine hesitancy and increase vaccination acceptability among socially disadvantaged individuals in urban areas. Strategies should focus on providing accurate and accessible information about the vaccine, communicating its positive impact effectively, engaging with religious leaders to address misconceptions, and tailoring vaccination campaigns to meet the unique needs of different demographic groups.

Path analysis of COVID-19 vaccine adherence among adolescents across Indonesia, in the Maluku-Papua Islands (Eastern Indonesia), and on Java Island

BACKGROUND

COVID-19 incidence in Indonesia was high among adolescents, but vaccine acceptance remains low. The unequal geographical distribution of the health workforce and health facilities in Indonesia, including a lower number of health workers and facilities in Maluku-Papua, resulted in a low rate of vaccine acceptance. Knowledge, attitude, belief in the vaccine, comorbidity, congenital status are related to vaccine adherence, but mediation analysis of factors remains lacking. We aimed to analyze path analysis of knowledge, congenital, comorbidity, belief, and attitude to COVID-19 vaccine adherence among adolescents in Indonesia, Maluku-Papua Island, and Java Island.

METHOD

A nationwide cross-sectional study was undertaken among 7604 adolescents. A path analysis to investigate mediating effects between variables combined with bootstrapping was utilized to determine statistical significance.

RESULT

Knowledge, congenital status, comorbidity, belief, and attitude were significantly positively associated with COVID-19 vaccine adherence among adolescents in Maluku-Papua Island (p < 0.01; n = 4761), Java Island (p < 0.01; n = 1573), and Indonesia (p < 0.05; n = 7604). Congenital status, belief, and attitude negatively mediated the relationship between knowledge of and adherence to COVID-19 vaccine (p < 0.01) in Indonesia and among the subgroup on Maluku-Papua Island (p < 0.01), but a positive mediation (p = 0.04) in our subgroup analysis of Java Island. Comorbidity status, belief, and attitude negatively mediated relationship between knowledge and adherence to COVID-19 vaccine in Indonesia (p ≤0.01) and Maluku-Papua (p = 0.00), but no mediation role was found in Java Island (p = 0.58).

CONCLUSION

Comorbidity, congenital illness status, belief in and attitude to COVID-19 vaccine negatively mediated the relationship between knowledge of and adherence to COVID-19 vaccine among adolescents in Indonesia and our sub-group on Maluku-Papua Island but not on Java Island.

PRACTICAL IMPLICATION

Massive improvement in healthcare facility equality plays an important role in Indonesia gaining COVID-19 vaccine adherence.

Is knowledge about COVID-19 associated with willingness to receive vaccine, vaccine uptake, and vaccine booster uptake in rural Malang, Indonesia?

Background

Lack of knowledge regarding the coronavirus disease (COVID-19) and COVID-19 vaccines is a key barrier to COVID-19 vaccine uptake in low- and middle-income countries (LMICs).

Aims

To examine factors associated with knowledge about COVID-19 and the association between knowledge of COVID-19, willingness to receive a COVID-19 vaccine, and vaccine uptake in Malang, East Java, Indonesia.

Method

A cross-sectional study among individuals aged 15-99 years was conducted in Malang, Java Timur, Indonesia between November 2022 and January 2023. Of 10,050 potential respondents, 10,007 were able to complete the survey. The main independent variable was knowledge about COVID-19, which was assessed using a six-item questionnaire. The dependent variables were COVID-19 vaccine uptake and COVID-19 booster vaccine uptake. The mediating variable was respondent's willingness to receive a COVID-19 vaccine. Linear regression was used to examine factors associated with knowledge about COVID-19. Logistic regression was employed to examine the association of knowledge about COVID-19 with vaccine uptake. Generalized structural equation modeling (GSEM) was performed to examine whether willingness to receive a vaccine mediated the association between knowledge about COVID-19 and vaccination uptake.

Findings

The percentage of respondents who reported having received at least one dose of a COVID-19 vaccine was 94.8%, while the percentage of those who reported having received at least three doses was 88.5%. These numbers are higher than the national average for COVID-19 vaccine and booster vaccine uptake. Most respondents answered about four of six knowledge items correctly (M = 4.60, SD = 1.1). Among respondents who had not received a vaccine, 83.1% expressed willingness to receive a vaccine when it became available to them. Older, more educated, employed respondents, and those with higher economic status, demonstrated more accurate knowledge about COVID-19 than younger, less educated, unemployed respondents and those with lower economic status. Respondents who demonstrated more accurate knowledge about COVID-19 were more likely to have received a vaccine (OR = 1.528, 95% CI = 1.428-1.634) and a booster vaccine (OR = 1.260, 95% CI = 1.196-1.328). Willingness to receive a vaccine mediated the association between knowledge about COVID-19 and vaccine uptake (coef. = 0.426, 95% CI = 0.379-0.473).

Implications

Interventions and public health programs aiming to improve knowledge about COVID-19 can be implemented to improve individual willingness to receive COVID-19 vaccination and to improve COVID-19 vaccine uptake among the general population.

Comparison of Achievements in the Implementation of COVID-19 Vaccination in Five Provinces to Establish Herd Immunity in Indonesia in the Perspective of the New Public Service

This study aims to analyze the achievements of coronavirus disease-2019 (COVID-19) vaccination in five provinces in Indonesia, North Maluku, West Sulawesi, Maluku, West Papua, and Papua. Furthermore, to establish herd immunity in the new normal perspective. Vaccination is important because it is an effective way to build immunity. This method uses qualitative research with a Qualitative Data Analysis Software (QDAS) approach. The source of data was obtained from the official website of the government, the ministry of health, in the category of areas with low vaccination achievement, and data were also obtained by capturing news in credible official media to find the cause of the low vaccination rate in the community. The data analyst uses NVivo12 software to code and visualizes data in graphs, images, and word clouds. The findings of this study indicate that in five provinces in Indonesia, North Maluku (68%), West Sulawesi (76%), Maluku (66%), West Papua (62%), and Papua (41%), the achievement of vaccination implementation is still relatively low. Due to doubts in the community about the status of the vaccine, information and communication education from the government have not been optimal; the environment and geography vary, so it becomes an obstacle in carrying out vaccination.

Addressing Unmet Needs in Vaccination for Older Adults in the Asia Pacific: Insights from the COVID-19 Pandemic

The impact of vaccinating the older population against vaccine-preventable diseases in terms of health, social and economic benefits has been increasingly recognised. However, there is a gap in the utilisation of vaccines worldwide. The population is ageing at an unprecedented pace in the Asia-Pacific (APAC) region, with the number of persons older than 65 years set to double by 2050 to around 1.3 billion. More than 18% of the population in Japan, Hong Kong, and China is over the age of 65 years. This highlights the importance of prioritising resources to address societal obligations toward the needs of the ageing generation. This review provides an overview of the challenges to adult vaccination in APAC, drivers to increase vaccination coverage, vaccination insights gained through the COVID-19 pandemic, and potential measures to increase the uptake of adult vaccines in the region.

COVID-19 Vaccine Hesitancy among Patients Recovered from COVID-19 Infection in Wuhan, China: A Cross-Sectional Questionnaire Study

BACKGROUND

Although patients recovered from COVID-19 infection already have immunity gained from natural infection, they are still at risk of reinfection due to the emergence of new variants of COVID-19 and the diminishing of naturally acquired immunity. COVID-19 vaccine is associated with efficacious protection against COVID-19 infection and could boost infection-acquired immunity, however, certain amounts of COVID-19 survivors have not been vaccinated due to vaccine hesitancy.

OBJECTIVE

The current study aimed to investigate COVID-19 vaccine hesitancy and related factors among COVID-19 survivors.

METHODS

A cross-sectional questionnaire survey was conducted among patients recovered from COVID-19 infection in Wuhan, China between June 10 and July 25, 2021. Questionnaire included sociodemographic information, items on COVID-19 infection, the COVID-19 vaccine hesitancy scale based on the 3Cs' model, trust in vaccine manufacturers and health facilities, and reasons for the decision to COVID-19 vaccination. Multiple logistic regression analysis was used to assess the influenced factors of COVID-19 vaccine hesitancy.

RESULTS

Among 1422 participants, 538 (37.8%) were not vaccinated against COVID-19. COVID-19 recovered patients who perceived current unhealthy status had more hesitancy about COVID-19 vaccine than those who perceived themselves healthy (OR 0.45, 95% CI 0.28-0.71). Compared to the asymptomatic patients, patients with mild symptoms were more likely to receive COVID-19 vaccine (OR 1.67, 95% CI 1.02-2.82). Regarding the 3Cs' model, high complacency and low convenience were significant negative factors for COVID-19 vaccination (P<.05). Trust in vaccine manufacturers and health facilities was a significant positive factor for COVID-19 vaccination (OR 1.14, 95% CI 1.09-1.19). "Self-needs" was the main reason for patients to receive the COVID-19 vaccine; "already have antibodies and do not need vaccination" was the main reason for patients not to receive the COVID-19 vaccine.

CONCLUSIONS

Among the three major factors of vaccine hesitancy, complacency was proved the most notable one among COVID-19 recovered patients, educational campaigns can focus on raising the awareness of risk of infection and the benefits of vaccination to reduce complacency toward vaccination among them. For COVID-19 recovered patients, improving factors related to convenience such as transportation and environment of vaccination and proving door-to-door service were also necessary to facilitate their vaccination. In addition, addressing the concerns about vaccination of COVID-19 recovered patients could foster trust and promote their vaccination.

CLINICALTRIAL

COVID-19 Vaccination and Clinical Outcomes at a Secondary Referral Hospital During the Delta Variant-dominant Period in West Sumatra, Indonesia

OBJECTIVES

The second wave of coronavirus disease 2019 (COVID-19) cases in Indonesia, during which the Delta variant predominated, took place after a vaccination program had been initiated in the country. This study was conducted to assess the impact of COVID-19 vaccination on unfavorable clinical outcomes including hospitalization, severe COVID-19, intensive care unit (ICU) admission, and death using a real-world model.

METHODS

This single-center retrospective cohort study involved patients with COVID-19 aged ≥18 years who presented to the COVID-19 emergency room at a secondary referral teaching hospital between June 1, 2021 and August 31, 2021. We used a binary logistic regression model to assess the effect of COVID-19 vaccination on unfavorable clinical outcomes, with age, sex, and comorbidities as confounding variables.

RESULTS

A total of 716 patients were included, 32.1% of whom were vaccinated. The elderly participants (≥65 years) had the lowest vaccine coverage among age groups. Vaccination had an effectiveness of 50% (95% confidence interval [CI], 25 to 66) for preventing hospitalization, 97% (95% CI, 77 to 99) for preventing severe COVID-19, 95% (95% CI, 56 to 99) for preventing ICU admission, and 90% (95% CI, 22 to 99) for preventing death. Interestingly, patients with type 2 diabetes had a 2-fold to 4-fold elevated risk of unfavorable outcomes.

CONCLUSIONS

Among adults, COVID-19 vaccination has a moderate preventive impact on hospitalization but a high preventive impact on severe COVID-19, ICU admission, and death. The authors suggest that relevant parties increase COVID-19 vaccination coverage, especially in the elderly population.

COVID-19 Vaccination Program Data Analysis Based on Regional Status and Day Type: A Study from West Java Province, Indonesia

Vaccination is a strategy to control the COVID-19 pandemic and holds a crucial impact on global health. A better understanding of factors associated with vaccination is needed to establish a good vaccination program in a population. The purpose of this study is to analyze COVID-19 vaccination program data based on regional status and day type in the West Java Province of Indonesia and contribute to discovering other characteristics of the COVID-19 vaccination program. This study is a cross-sectional study using secondary data (N = 7922) from West Java's COVID-19 Information and Coordination Center (PIKOBAR) from January to November 2021. Independent t-test with an alternative non-parametric Mann-Whitney U test (p-value < 0.05) is used as a statistical test in this study. The result reported significant differences in vaccination coverage between the city area and the regency area (p < 0.001). Significant differences in vaccination on working day and holiday were also found in both settings (p < 0.001). Vaccination was confirmed to be higher in the city compared to the regency and decreased on holiday compared to the working day. In conclusion, factors linked to regional status and day type must be considered as important factors for developing and accelerating vaccination programs.