Background of the Study
Climate change is increasingly recognized as a major driver of vector-borne diseases, affecting their distribution, transmission, and seasonality (World Health Organization [WHO], 2024). Rising temperatures, changes in precipitation patterns, and extreme weather events influence the habitat and breeding patterns of disease-carrying vectors such as mosquitoes and ticks (Nigeria Centre for Disease Control [NCDC], 2024). In sub-Saharan Africa, including Nigeria, climate change has contributed to the expansion of vector-borne diseases such as malaria, dengue fever, and leishmaniasis (Aliyu & Garba, 2024).
Yobe State, located in the semi-arid northeastern region of Nigeria, is particularly vulnerable to climate change impacts. Changes in temperature and rainfall have altered mosquito breeding patterns, leading to shifts in malaria transmission seasons and an increased risk of other vector-borne diseases (Usman et al., 2024). Limited research has been conducted on the direct effects of climate change on vector-borne disease distribution in Yobe State, making this study essential in understanding emerging health risks and informing policy responses.
Statement of the Problem
Despite increasing evidence linking climate change to the spread of vector-borne diseases, there is limited data on how changing environmental conditions are influencing disease distribution in Yobe State (NCDC, 2024). Rising temperatures and erratic rainfall patterns are altering the ecology of disease vectors, yet current public health strategies do not fully account for these changes (Ogunleye et al., 2024). Without targeted research and adaptation strategies, the burden of vector-borne diseases may increase, placing additional strain on the state’s healthcare system.
This study seeks to examine the impact of climate change on the distribution of vector-borne diseases in Yobe State, identifying key environmental factors contributing to disease spread and proposing mitigation measures.
Objectives of the Study
1. To assess the trends in vector-borne disease prevalence in Yobe State.
2. To examine the impact of climate change variables (temperature, rainfall, humidity) on the distribution of vector-borne diseases.
3. To propose climate-adaptive strategies for controlling vector-borne diseases in Yobe State.
Research Questions
1. What are the trends in vector-borne disease prevalence in Yobe State?
2. How do climate change factors influence the distribution of vector-borne diseases?
3. What climate-adaptive strategies can mitigate the impact of climate change on vector-borne diseases?
Research Hypotheses
1. Climate change has a significant impact on the prevalence of vector-borne diseases in Yobe State.
2. Changes in temperature and rainfall influence the breeding patterns of disease vectors.
3. Implementing climate adaptation strategies can reduce the burden of vector-borne diseases.
Scope and Limitations of the Study
This study will focus on vector-borne diseases such as malaria, dengue fever, and leishmaniasis in Yobe State. Limitations may include challenges in obtaining long-term climate and health data and potential underreporting of disease cases.
Definitions of Terms
• Vector-Borne Diseases – Diseases transmitted to humans through vectors such as mosquitoes, ticks, and sandflies.
• Climate Change – Long-term shifts in temperature, precipitation, and weather patterns, often linked to human activities.
• Disease Distribution – The geographic and temporal spread of a disease in a population.
Chapter One: Introduction
1.1 Background of the Study
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