CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

Globally, tuberculosis (TB) remains one of the leading infectious diseases worldwide, causing approximately 10 million new cases and 1.6 million deaths annually (World Health Organization [WHO], 2022). Despite extensive efforts to combat the disease, challenges such as delayed diagnosis, poor treatment adherence, and inadequate healthcare infrastructure continue to hinder TB control, particularly in low- and middle-income countries (Stop TB Partnership, 2021). The rapid evolution of digital communication technologies has provided new avenues for addressing these challenges, with the WHO integrating digital health solutions into the End TB Strategy since 2015 (WHO, 2015). These solutions leverage information and communication technologies (ICT) to enhance patient adherence, streamline data management, and facilitate early diagnosis through telemedicine, mobile health (mHealth) applications, and artificial intelligence-driven diagnostics. The use of digital tools has shown significant potential in bridging healthcare gaps, improving TB surveillance, and strengthening health systems through real-time data sharing and remote monitoring (Bastawrous & Armstrong, 2018). As digital health initiatives continue to expand, global health organizations and governments are increasingly investing in ICT-driven interventions to improve TB outcomes and accelerate progress toward TB eradication.

The expansion of mobile technology and internet connectivity has revolutionized healthcare delivery, offering unprecedented opportunities for TB control. By early 2020, there were nearly 10 billion mobile phone connections worldwide, with over half of the global population having internet access (International Telecommunication Union [ITU], 2021). This widespread digital reach has facilitated the development of mHealth applications designed to monitor TB patients remotely and enhance treatment adherence through digital adherence technologies (DATs) (WHO, 2021). Studies have shown that SMS reminders, mobile applications, and video-supported treatment directly observed therapy (VOT-DOT) can significantly improve medication adherence rates among TB patients (Liu et al., 2020). For example, a study in South Africa demonstrated that patients using VOT-DOT were 50% more likely to complete their TB treatment regimen compared to those receiving standard care (Story et al., 2019). Similarly, machine learning models analyzing cough patterns via smartphone applications have emerged as promising tools for early TB detection, providing a cost-effective, non-invasive diagnostic alternative (Suda et al., 2023). These technological innovations, coupled with increased mobile penetration, are transforming TB management by making healthcare more accessible and efficient, particularly in remote and underserved communities.

Several large-scale digital health initiatives have demonstrated tangible improvements in TB treatment outcomes across different regions. One notable example is the eCompliance system, developed by Microsoft Research in partnership with Operation ASHA, which uses biometric verification to track TB medication adherence (Marr, 2019). Implemented in India and Cambodia, this system has reduced default rates by ensuring that patients consistently follow their prescribed treatments (Singh et al., 2020). Another successful initiative is the use of AI-powered diagnostic tools, such as CAD4TB, which analyzes chest X-rays to detect TB with accuracy comparable to that of trained radiologists (Philips, 2021). These AI-driven solutions are particularly beneficial in resource-limited settings where access to radiologists is scarce. Furthermore, cloud-based platforms and digital registries are enabling real-time data collection and case tracking, allowing public health officials to identify TB outbreaks and allocate resources more effectively (WHO, 2022). While digital health technologies have shown immense promise, challenges such as data privacy concerns, digital literacy gaps, and disparities in internet access remain critical barriers to widespread adoption. Addressing these challenges through targeted policy interventions, public-private partnerships, and sustained investment in digital infrastructure will be crucial for maximizing the impact of digital communication technologies on TB control and public health at large.

In Africa, Tuberculosis (TB) continues to be a leading cause of morbidity and mortality across, accounting for a substantial proportion of the global TB burden. In 2020, Africa reported over 500,000 TB-related deaths, and despite decades of efforts to control it, TB remains one of the most significant public health challenges on the continent (World Health Organization [WHO], 2022). The disease is further exacerbated by factors such as late diagnosis, poor treatment adherence, and limited healthcare resources in many African countries (Ayele et al., 2021). Digital communication technologies (DCTs) have emerged as a promising solution to combat these challenges by enhancing the accessibility, efficiency, and reach of healthcare interventions. In particular, the integration of mobile health (mHealth) technologies, telemedicine, and digital adherence technologies (DATs) has the potential to improve TB diagnosis, treatment adherence, and overall patient care (Sahoo et al., 2020). The WHO has long advocated for the adoption of digital health solutions to address gaps in TB management, releasing its Digital Health for the End TB Strategy: An Agenda for Action in 2015, which calls for the use of ICT to strengthen TB control efforts worldwide (WHO, 2015). In Africa, where the burden of TB is highest, these technologies are increasingly being explored to improve the quality of care and achieve more sustainable outcomes in the fight against TB.

The widespread use of mobile phones and internet connectivity in Africa has greatly facilitated the implementation of DCTs in TB management. As of 2020, Africa had over 800 million mobile phone subscriptions, providing a platform for the delivery of mHealth solutions that can reach remote and underserved populations (ITU, 2021). The increased digital penetration has enabled the development of various mobile applications designed to support TB patients in adhering to their treatment regimens, an area where significant gaps exist. For instance, the ASCENT project, implemented in Ethiopia, Tanzania, and South Africa, uses digital tools such as video-based directly observed therapy (VOT-DOT), medication tracking, and electronic pillboxes to help patients stay on track with their TB treatment (Sahoo et al., 2020). These tools not only remind patients to take their medications but also allow healthcare providers to monitor patient adherence remotely. Similarly, the mHealth solution TUBERCULOSIS CARE has been tested in countries like Kenya and Uganda, helping to improve the early detection of TB, streamline patient follow-ups, and provide more personalized care (WHO, 2021). These innovative approaches reduce the need for in-person visits, increase patient engagement, and address common barriers such as transportation and access to healthcare facilities, which are critical challenges in many African regions.

Furthermore, mobile health applications have proven to be an effective tool for improving TB diagnosis and management in Africa, where healthcare infrastructure is often underdeveloped. For example, the partnership between the Kenya Medical Research Institute (KEMRI) and international health organizations has led to the development of a mobile app designed to screen and monitor TB patients using real-time data (Ayele et al., 2021). The application allows for remote monitoring and enables healthcare providers to access patient information quickly, thus improving decision-making and reducing diagnostic delays. Similarly, in Uganda, the Tuuka app has been used to support TB patients by providing reminders for appointments, collecting patient data, and sending treatment adherence reports to health facilities (BMC Digital Health, 2023). These digital tools help to address the treatment gap by ensuring that patients in hard-to-reach areas receive continuous care, even when access to healthcare facilities is limited.

In Cameroon Tuberculosis (TB), contributes to a high burden of infectious disease in the region. In 2020, the World Health Organization (WHO) estimated that Cameroon had an incidence of over 25,000 TB cases, with a significant proportion of these cases remaining undiagnosed or untreated (WHO, 2020). TB’s prevalence is exacerbated by several factors, including poor healthcare infrastructure, limited access to diagnostics, and inadequate treatment adherence. In response, the Cameroon government has intensified efforts to combat the disease through improved TB care and prevention programs, but challenges remain in the timely detection of TB and the continuity of treatment (Tanyi et al., 2018). Traditional methods of care, such as directly observed therapy (DOT), face significant barriers due to the logistical difficulties of ensuring patient adherence, especially in rural and underserved areas. Digital communication technologies (DCTs) offer promising solutions to address these challenges, providing platforms for better patient engagement, remote monitoring, and enhancing access to care in the fight against TB in Cameroon.

Digital health technologies, including mobile health (mHealth) applications, telemedicine, and digital adherence tools, have begun to play a pivotal role in enhancing TB management in Cameroon. With increasing mobile phone penetration across Africa, Cameroon has seen a surge in the use of digital solutions in health interventions. According to the International Telecommunication Union (ITU), over 75% of Cameroon’s population had access to mobile phones by 2020, creating an opportunity for mHealth platforms to assist in TB control (ITU, 2020). Several initiatives have emerged, focusing on improving TB diagnosis, treatment adherence, and follow-up care. For instance, mobile applications designed for TB patient monitoring have been tested in urban and rural settings, allowing healthcare providers to send medication reminders, track patient symptoms, and provide educational resources on TB prevention (Ngwang et al., 2020). Moreover, Cameroon has explored the use of video-observed therapy (VOT), where healthcare providers remotely observe patients taking their medication via video calls, which increases adherence rates and minimizes the need for in-person visits. These digital tools contribute to more efficient patient management and offer real-time data, which is crucial in resource-limited settings like Cameroon.

Furthermore, Cameroon’s adoption of digital solutions for TB management has shown promising results in strengthening the health system’s response to the disease. For example, in the Far North and Northwest regions, mobile applications have been used for TB case detection, improving early diagnosis and reducing delays in treatment initiation (Tanyi et al., 2019). By integrating electronic health records (EHRs) and mobile reporting systems, the Cameroon Ministry of Public Health has been able to streamline TB surveillance and treatment tracking, which has led to better data collection and decision-making in national TB control programs (WHO, 2021). The introduction of telemedicine platforms has also facilitated remote consultations and diagnostic services in rural areas, where access to healthcare facilities is limited. Additionally, community health workers (CHWs) have been empowered with digital tools to monitor and follow up on TB patients, improving treatment adherence and fostering community engagement in TB prevention.

In Bamenda, the capital of the North West Region of Cameroon despite the ongoing efforts to reduce its prevalence, TB remains a persistent threat, with the city seeing a significant burden of cases. In recent years, the region has experienced challenges such as delayed diagnosis, inadequate access to healthcare facilities in remote areas, and poor treatment adherence, all of which contribute to the continued spread of the disease (Ngwang et al., 2020). The limited availability of healthcare professionals and resources in Bamenda further exacerbates the problem, particularly in the rural areas where healthcare infrastructure is sparse. The Cameroon government, in collaboration with international health organizations, has implemented various initiatives to tackle TB, but the road to eradicating the disease remains challenging. Traditional approaches, such as directly observed therapy (DOT), have had mixed success due to logistical difficulties and low patient compliance, highlighting the need for innovative solutions to address these barriers (WHO, 2020).

In response to these challenges, digital communication technologies (DCTs) have been proposed as a potential solution to enhance TB management in Bamenda. Mobile health (mHealth) applications, digital adherence technologies (DATs), and telemedicine platforms have been identified as key tools to improve the diagnosis, treatment, and follow-up care of TB patients in the region. With a steadily growing mobile phone penetration rate, which reached over 75% of the population by 2020, Bamenda has seen an increase in the use of digital tools for health interventions (ITU, 2021). One notable development is the introduction of mHealth applications that enable healthcare providers to monitor TB patients remotely, ensuring that they adhere to their prescribed treatment regimens. These applications can send medication reminders, track patient symptoms, and provide educational content to improve awareness about TB prevention (Tanyi et al., 2020). Additionally, video-observed therapy (VOT) has been piloted, allowing healthcare providers to remotely observe patients taking their medication, which is particularly beneficial in urban areas like Bamenda where transportation and accessibility to health facilities can be difficult (WHO, 2021).

Moreover, the integration of digital tools in TB care in Bamenda has contributed to more efficient disease surveillance, early detection, and patient management. In collaboration with local and international organizations, Bamenda has begun adopting telemedicine platforms to improve access to diagnostic services, especially in areas with limited healthcare infrastructure. These platforms enable healthcare professionals to conduct consultations remotely, reducing the need for patients to travel long distances to access medical care (Ngwang et al., 2020). Furthermore, digital health records have been introduced, allowing healthcare providers in Bamenda to track patient data in real time, making it easier to manage treatment schedules and identify potential treatment failures early on. Community health workers (CHWs) in Bamenda have also been equipped with digital tools to support TB patients in their care journey. These technologies facilitate better follow-up and offer valuable insights into treatment adherence, thereby contributing to reducing the spread of TB in the community (WHO, 2020).

1.2 Statement of the Problem

The prevalence of tuberculosis (TB) remains a significant public health challenge worldwide, particularly in regions like sub-Saharan Africa, where access to timely diagnosis and treatment is limited. Despite substantial efforts from international organizations and governments, TB continues to cause high morbidity and mortality rates, especially in low-resource settings (World Health Organization [WHO], 2020). In Cameroon, TB is exacerbated by issues such as delayed diagnosis, inadequate healthcare infrastructure, and poor treatment adherence, all of which hinder effective disease management (Tanyi et al., 2020). Traditional approaches, such as directly observed therapy (DOT), have shown limited success due to logistical challenges, particularly in rural and remote areas, where healthcare facilities are few and far between (Ngwang et al., 2020). While digital communication technologies (DCTs), including mobile health (mHealth) apps, telemedicine, and digital adherence tools, have been identified as potentially transformative solutions, their adoption in TB management remains inconsistent and underexplored in many African regions, including Cameroon. These technologies have the potential to improve early diagnosis, enhance treatment adherence, and reduce the burden of TB, yet there is a gap in understanding how effectively these tools can be integrated into existing healthcare systems, especially in areas with limited digital infrastructure and resources (WHO, 2021). Thus, the problem lies in the underutilization of DCTs to address the TB epidemic in such settings, and the need for a comprehensive evaluation of their impact on TB control in Cameroon especially in Bamenda II municipality remains crucial.

1.3 Research Questions

1.3.1 Main Question:

How do Digital Communication Technologies affect Public Health in Bamenda II Municipality?

1.3.2 Specific Questions:

1. How do Mobile Health (mHealth) applications affect TB patients’ treatment adherence in Bamenda II Municipality?
2. How does Telemedicine affect TB diagnosis and consultations in Bamenda II Municipality?
3. How do Electronic Health Records (EHRs) affect patient data management in the Bamenda II Municipality?

1.4 Research Objectives

1.4.1 Main Objective:

To evaluate the effect of Digital Communication Technologies and Public Health in Bamenda II Municipality.

1.4.2 Specific Objectives:

1. To assess the effect of Mobile Health (mHealth) applications on TB patients’ treatment adherence and in Bamenda II Municipality.
2. To examine the effect of Telemedicine on TB diagnosis and patient monitoring, especially in Bamenda II Municipality.
3. To analyze the effect of Electronic Health Records (EHRs) in managing TB patient data.