Disasters are generally considered “low probability–high impact events.” Disasters always arise from some disequilibrium between hazards in the environment and the vulnerabilities of human communities. In the 21^st century natural and complex disasters caused a dramatic increase in the demand for emergency medical care. Epidemiological data are well recognized as essential to understand to competent disaster management. Studies of disaster impact on public health have suffered by the lack of these data, especially the lack of real time .The analysis of hazards and vulnerabilities represent the key to managing and mitigate disasters assessment. The objective of this project is to create a country database (DB), an Italian Database, to collect all available information about the past country disasters and to establish a model for future, with a an analysis of factors that are most likely to produce hazards. The aim of this model is to investigate the impact of disasters upon the physical security and the health of people; factors that are most likely to produce hazards.