FACTORS RESPONSIBLE FOR POOR IMMUNIZATION COVERAGE IN NIGERIA ( A CASE STUDY OF YANDEV, GBOKO BENUE STATE)

CHAPTER ONE

INTRODUCTION

1.1. Background of the Study

Immunization is widely recognized as one of the most effective and cost-efficient health interventions, significantly reducing child mortality rates, particularly among children under five years old (World Health Organization, 2009). Between 2010 and 2015, global immunization statistics indicate that approximately 85% of children received three doses of the diphtheria-pertussis-tetanus (DPT) vaccine (World Health Organization, 2016). However, despite these efforts, 19.4 million children worldwide were still not covered by routine immunization (RI) as of 2015 (World Health Organization, 2016). A significant proportion (75%) of these unvaccinated children reside in just 10 countries, including Nigeria (World Health Organization, 2009).

As the most populous country in Africa, Nigeria experiences an annual population growth rate of 2.83% (National Population Commission, 2008) and is the second largest contributor to under-five mortality worldwide (UNICEF, 2015). Data from the 2013 National Demographic and Health Survey (NDHS) reveal that only 25% of children aged 12 to 23 months in Nigeria completed the recommended course of routine immunization (National Population Commission, 2015). However, there are considerable disparities across the country's various regions, with immunization completion rates varying from 50% in the South-West and South-South regions to as low as 10% in the North-West region, with the North-Central and North-East regions faring poorly as well, with rates of 27% and 14%, respectively (Fatiregun & Etukiren, 2014).

Several factors contribute to Nigeria's low immunization coverage. These factors include medical mistrust, which is often influenced by socio-political dynamics (Baumgaertner et al., 2018), weak health systems characterized by poor patronage of health services, and negative attitudes from health workers (Akwataghibe et al., 2019). Furthermore, conflicts between various immunization programs and competing health priorities, such as the tension between routine and supplementary immunization campaigns, have exacerbated the situation (Fatiregun & Etukiren, 2014). Despite vaccines being procured by the Nigerian federal government with the assistance of organizations like the Global Alliance for Vaccines and Immunization (GAVI), logistical challenges, illegal fees charged by healthcare workers, and indirect costs associated with vaccine delivery hinder vaccine availability to the intended users (Adegboyega & Abioye, 2017). These barriers are crucial in understanding the persistence of poor immunization coverage in the country.

Several factors contribute to low immunization coverage in rural and semi-urban areas like Yandev. A prominent factor is the lack of access to healthcare facilities due to poor road networks and long travel distances, which deter parents from completing their children's vaccination schedules (Dassah et al., 2018). Furthermore, inadequate awareness about the importance of immunization plays a significant role. Many caregivers in Yandev have limited knowledge of the benefits of immunization, the recommended schedule, and the potential consequences of missing vaccinations. This knowledge gap is often fueled by low literacy levels and insufficient health education campaigns (Sander et al., 2009).

Cultural beliefs and religious practices also influence immunization uptake in Yandev. Some parents refuse to vaccinate their children due to misconceptions about vaccines, viewing them as harmful or incompatible with their traditional or religious values (Ohammah, 2020). Additionally, the influence of anti-vaccine propaganda on social media has contributed to vaccine hesitancy, creating distrust in the healthcare system (Kollataj et al., 2020).

Another significant factor is the inadequacy of healthcare infrastructure and resources. Many primary healthcare centers in Yandev lack the necessary vaccines, cold chain equipment, and trained personnel to ensure effective immunization services (Akange, 2016). This situation is exacerbated by irregular vaccine supply, which disrupts immunization programs and leads to missed opportunities for vaccination.

Socioeconomic factors, such as poverty and unemployment, further compound the problem. Many families in Yandev cannot afford the indirect costs of immunization, such as transportation to health facilities and loss of daily income. This economic constraint forces caregivers to prioritize immediate survival needs over long-term health investments like vaccination (Edom, 2024).

Addressing poor immunization coverage in Yandev requires a multifaceted approach, including improving healthcare infrastructure, increasing public awareness, and addressing cultural and socioeconomic barriers. It is based on this backdrop that the present study examined factors responsible for poor immunization coverage in Yandev, Gboko Benue State.

1.2. Statement of the Problem

Despite the proven effectiveness of immunization in preventing vaccine-preventable diseases (VPDs), immunization coverage in rural areas like Yandev, Gboko, Benue State, remains critically low. According to recent data, Nigeria accounts for a significant proportion of the global burden of unimmunized children, with rural communities experiencing the highest levels of under-vaccination (Akinyemi, 2021). This gap in immunization coverage poses a significant public health risk, increasing the likelihood of disease outbreaks, preventable deaths, and long-term disability, particularly among children under five years of age.

The low immunization coverage in Yandev can be attributed to a combination of socio-cultural, economic, and systemic challenges. One key issue is vaccine hesitancy, which is influenced by misinformation, deeply rooted cultural beliefs, and mistrust of healthcare systems. Many caregivers in the area either refuse or delay vaccinations due to fears of side effects and misconceptions about vaccine safety, a problem highlighted in recent research (Majid & Ahmad, 2020). Additionally, systemic challenges such as poor healthcare infrastructure, irregular vaccine supply, and a lack of adequately trained healthcare workers further hinder immunization efforts in the region (Bangura et al., 2022).

Socioeconomic barriers also play a critical role. Families in Yandev, many of whom live below the poverty line, face difficulties in accessing healthcare services due to the cost of transportation, time constraints, and competing financial priorities. These challenges lead to missed vaccination appointments and incomplete immunization schedules, further exacerbating the problem (Siddiqua et al., 2024). Furthermore, inadequate public health campaigns and limited community engagement fail to address the information gaps that contribute to vaccine hesitancy and low uptake (Etowa et al., 2024).

Without targeted interventions to address these multifaceted challenges, Yandev remains at risk of disease outbreaks and preventable mortality, undermining broader national and global health goals. Understanding the factors responsible for poor immunization coverage in this area is critical for developing context-specific strategies to improve vaccination uptake and safeguard public health.

1.3. Objectives of the Study

The aim of this study is to investigate the factors responsible for poor immunization coverage in Yandev, Gboko, Benue State. Specific objectives of the study include;

1. To identify the socio-cultural factors contributing to poor immunization coverage in Yandev.
2. To examine the role of healthcare infrastructure and accessibility in influencing immunization rates.
3. To explore the impact of vaccine hesitancy and misinformation on immunization coverage in Yandev.
4. To assess the socioeconomic factors affecting caregivers' ability to access immunization services.
5. To evaluate the effectiveness of public health campaigns and government interventions aimed at improving immunization coverage in Yandev.

1.4. Research Questions

The following questions guided this study;

1. What are the socio-cultural factors contributing to poor immunization coverage in Yandev?
2. How does healthcare infrastructure and accessibility affect immunization rates in Yandev?
3. What is the impact of vaccine hesitancy and misinformation on immunization coverage in Yandev?
4. How do socioeconomic factors influence caregivers' ability to access immunization services in Yandev?
5. How effective are public health campaigns and government interventions in improving immunization coverage in Yandev?

1.5. Research Hypotheses

The following were hypothesized;

Hypothesis 1

H₀: There is no significant relationship between socio-cultural factors and immunization coverage in Yandev.

H₁: There is a significant relationship between socio-cultural factors and immunization coverage in Yandev.

Hypothesis 2

H₀: Healthcare infrastructure and accessibility do not significantly influence immunization rates in Yandev.

H1: Healthcare infrastructure and accessibility significantly influence immunization rates in Yandev.

Hypothesis 3

H₀: Vaccine hesitancy and misinformation have no significant impact on immunization coverage in Yandev.

H1: Vaccine hesitancy and misinformation have a significant impact on immunization coverage in Yandev.

Hypothesis 4

H₀: Socioeconomic factors do not significantly affect caregivers’ ability to access immunization services in Yandev.

H1: Socioeconomic factors significantly affect caregivers’ ability to access immunization services in Yandev.

Hypothesis 5

H₀: Public health campaigns and government interventions are not effective in improving immunization coverage in Yandev.

H1: Public health campaigns and government interventions are effective in improving immunization coverage in Yandev.

1.6. Significance of the Study

This study is vital as it seeks to address the persistent issue of poor immunization coverage in Yandev, Gboko, Benue State, a problem that exacerbates the prevalence of vaccine-preventable diseases and leads to avoidable child mortality. By exploring the underlying factors responsible for low immunization rates, this research provides valuable insights for stakeholders at various levels, enabling them to implement evidence-based interventions to improve immunization uptake and coverage.

The findings will benefit healthcare policymakers and public health officials, equipping them with detailed knowledge of the socio-cultural, economic, and systemic barriers hindering effective immunization in Yandev. This will allow for the development of more tailored and context-specific policies, such as targeted health education campaigns to combat vaccine hesitancy and misinformation. Policymakers can also use the findings to advocate for better funding and improved logistics for vaccine distribution in rural areas.

Healthcare providers and professionals in the Yandev community will also gain from this study. Understanding the specific challenges faced by caregivers, such as accessibility issues and fears surrounding immunization, will enable providers to adopt more patient-centered approaches. For instance, mobile immunization clinics, flexible vaccination schedules, and culturally sensitive communication strategies can be introduced to increase vaccine acceptance and reduce missed opportunities for immunization.

The study is equally significant for community leaders and traditional authorities, who play an influential role in shaping attitudes and behaviors within the community. Armed with the findings, these leaders can serve as advocates for immunization, addressing cultural misconceptions and promoting the health benefits of vaccines. Their involvement will foster trust between the community and healthcare systems, enhancing vaccine uptake.

Moreover, non-governmental organizations (NGOs) and international health agencies, such as UNICEF and Gavi, can utilize the research findings to design and implement effective intervention programs in Yandev and similar rural communities. These organizations often work closely with local governments and communities to strengthen healthcare delivery systems, and the insights from this study will enable them to address specific gaps and challenges in immunization coverage.

Finally, the study will have a direct impact on caregivers and the broader Yandev community, who will benefit from improved access to immunization services and a greater understanding of their importance. Enhanced immunization coverage will reduce the incidence of vaccine-preventable diseases, improving child survival rates and fostering a healthier community. By achieving higher immunization rates, the community will also benefit from herd immunity, reducing the overall burden of disease and its associated healthcare costs.

Ultimately, this study contributes to the achievement of the Sustainable Development Goals (SDGs), particularly Goal 3, which focuses on ensuring healthy lives and promoting well-being for all. Through its findings, the study aims to foster collaboration among various stakeholders and drive collective action toward universal immunization coverage in Yandev.

1.7. Scope of the Study

This study focuses on examining the factors responsible for poor immunization coverage in Yandev, Gboko, Benue State. Specifically, it seeks to identify the socio-cultural, economic, and systemic barriers that hinder caregivers from ensuring their children receive the recommended vaccines. The research will target households with children under the age of five, as this demographic is most vulnerable to vaccine-preventable diseases and serves as a critical indicator of immunization success.

The study will adopt a quantitative research design, utilizing structured questionnaires as the primary tool for data collection. These questionnaires will be designed to capture relevant information on caregivers’ knowledge, attitudes, and practices regarding immunization, as well as their experiences with healthcare service delivery. Questions will also explore the role of socio-economic factors such as income, education, and access to healthcare facilities in influencing immunization decisions. Additionally, the study will investigate the impact of misinformation, cultural beliefs, and vaccine hesitancy on immunization coverage in the area.

The geographic scope is limited to Yandev, a rural community in Gboko, Benue State, to ensure an in-depth understanding of the local context. Respondents will include caregivers of children under five, community leaders, and healthcare workers, as they are key stakeholders in immunization programs. The study will also cover health facilities within Yandev to gather data on the availability and accessibility of vaccines, as well as the challenges faced by healthcare providers in delivering immunization services.

The time frame for the study will focus on immunization coverage within the past five years, providing a comprehensive analysis of trends and patterns over this period. Data collected will be analyzed statistically to establish relationships between identified factors and immunization rates, enabling the study to draw objective and evidence-based conclusions.

By concentrating on the quantitative aspects of the research, this study aims to provide measurable insights into the factors contributing to poor immunization coverage in Yandev, which will serve as a foundation for actionable recommendations to improve vaccination rates and protect public health.

1.8 Operational Definition of Terms

Immunization Coverage

The proportion of children under five years of age in Yandev, Gboko, Benue State, who have received the recommended vaccines according to the national immunization schedule.

Poor Immunization Coverage

A situation where a significant percentage of children under five in Yandev have not received all the required vaccines, leading to suboptimal protection against vaccine-preventable diseases.

Socio-Cultural Factors

Beliefs, practices, and traditions within the Yandev community that influence caregivers' decisions regarding childhood immunization, such as fear of side effects, religious objections, or reliance on traditional medicine.

Economic Factors

The financial constraints and income levels of caregivers in Yandev, which may limit their ability to access immunization services due to transportation costs, loss of work hours, or other related expenses.

Healthcare Infrastructure

The availability, accessibility, and quality of health facilities in Yandev, including the adequacy of vaccination services, healthcare personnel, and vaccine supplies.