Apparently, it is necessary to analyze the numbers of morbidity cases in the limited regions (not capital cities) having similar population density and bordering a minimum number of other populated regions (for example, bordering seas or mountain systems) for fixed short-term periods close to the time of the appearance of the first virus morbidity cases. It can be expected that the maximum morbidity cases will be detected in for the regions of virus emission and that this parameter should decrease with the distance from the virus source.