Investigating the Role of Climate Change in the Prevalence of Infectious Diseases and its Impact on the Human Immune System
Abstract
Climate change is increasingly recognized as a significant driver of global changes in infectious disease patterns. Higher temperatures, changing rainfall patterns, and other extreme weather events affect the survival of pathogens, vector behavior, and human contact. These linkages are essential for creating effective public health strategies. This paper explores the impact of climate change on the prevalence and distribution of infectious diseases and reveals the environmental, ecological, and biological mechanisms underlying this effect. Specifically, it was premised on a mixed-methods method, which involved the review of the scientific literature fully, analysis of epidemiological and climatic data, and case studies in various regions. The patterns of disease incidences were compared with temperature, precipitations, and extreme weather data to establish the connection between climate and disease. The findings indicate that climatic factors and disease prevalence are closely related. The vectors transmit diseases, e.g. malaria, dengue fever, Lyme disease, and their geographical spread and increase in the number of cases are evidently related to a variation in temperature and rain distribution. Waterborne and respiratory infection outbreaks were observed to be heightened during extreme weather events, including floods and heat waves. Further, emerging disease risks are driven by ecosystem imbalances and biodiversity loss. Climate-driven shifts in wildlife distribution, altered migration patterns, and increased contact between humans, livestock, and wild animals have intensified zoonotic spillover risks. Many pathogens now circulate more efficiently in animal hosts under warmer and more variable climates, creating new pathways for cross-species transmission. These ecological dynamics underscore the importance of integrating wildlife considerations into climate-related disease surveillance. Climate change is an influential component of the dynamic of infectious diseases that both directly influences the environmental level and the larger ecological changes. To decrease the threat of future diseases, it is necessary to increase the interd