The Impact of Malaria on the Spatial Distribution of Healing Cults in Roman Italy, Sicily, and Sardinia : A GIS Approach

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Authors

KHEML Sebastian GLOMB Tomáš CHALUPA Aleš

Year of publication 2026
Type Article in Periodical
Magazine / Source OPEN ARCHAEOLOGY
MU Faculty or unit

Faculty of Arts

Citation
web https://doi.org/10.1515/opar-2025-0074
Doi https://doi.org/10.1515/opar-2025-0074
Keywords malaria; Roman religion; ancient healing cults; GIS; Latin epigraphy
Description Malaria has long ranked among the most serious health threats in human history, a reality that was also reflected in certain regions of the Roman Empire. This article investigates the cultural impact of malaria on Roman society, particularly in terms of the distribution of ancient healing cults dedicated to Asclepius and Apollo, which functioned as one of the key medical institutions of the time. Our approach combines traditional historiographical methods with a spatial analysis using a Geographic Information System (GIS) to assess whether a meaningful spatial correlation existed between malaria and Roman healing cults. The Roman territories of Italy, Sicily, and Sardinia are of particular interest, as the distribution of malaria in these areas can be reconstructed using a digitized version of the Torelli map, a 19th-century pre-eradication source that is spatially in agreement with literary and archaeological evidence of malaria in Roman times. Within a GIS environment, epigraphic evidence of ancient healing cults was used to evaluate their spatial relationship with malaria-prone zones as represented in the Torelli map, alongside a comparative analysis involving inscriptions of other selected Roman deities. In our research, we considered both the proportional intensity of the worship of healing cults and their spatial proximity in relation to malaria-prone zones. The results provide significant support for the hypothesis that malaria risk was a contributory factor in the spread of the healing cults of Asclepius and Apollo.
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