Respiratory diseases and pneumoniamanifestof seasonal variability an example from Nitra region in Slovakia

The aim of this study was to analyze the incidence of some respiratory diseases in outpatient's pneumology departments along three years period and point out seasonal variation in these diseases. The number of examined ambulatory patients suffered from all causes of respiratory diseases and pneumonia on monthly basis were applied to create a time-series analysis in numerical and graphical output of data. Significant differences in all followed diseases between winter season and summer season were observed. These data are in accordance with data of other authors and epidemiological surveys on long year's basis. Possible reasons of these observations are discussed, and it may speculate about seasonally driven viral circulation. Deficiency in vitamin D levels in wintertime is another possible reason for winter peak in the incidence of respiratory diseases. Our results can aid not only in effective allocation of resources and services but can be helpful for better understanding of respiratory epidemiology, respiratory pathology with potential role of vitamin D in its possible improvement, especially in wintertime.