Explore Geographic Information System (GIS) tools and their applications in understanding host ecology and epidemic dynamics in this comprehensive lecture. Delve into how spatial analysis techniques can be leveraged to study disease transmission patterns, identify environmental risk factors, and map the distribution of host species. Learn to integrate various data sources, including satellite imagery, land use maps, and epidemiological data, to create informative visualizations and conduct spatial statistical analyses. Discover how GIS can aid in predicting disease hotspots, planning targeted interventions, and evaluating the effectiveness of control measures. Gain practical insights into using popular GIS software and tools specifically tailored for ecological and epidemiological research. By the end of this lecture, acquire valuable skills to apply GIS methodologies in your own studies of host-pathogen interactions and disease outbreaks.