Biological safety of public events: assessment of external epidemiological threat

Division of infections into the constituting individual and population danger taking into account the territorial and seasonal risks of distribution at their drift is proved in article and the differentiation of the last on threat of emergence of emergency situation of biological character at epidemic manifestations that will allow to optimize algorithms of reaction and the organization of antiepidemic actions. The new relative criterion «orient number of infections from one source» reflecting potential ability of the activator to be transferred in human population is offered. Assessment of risk of distribution and threat of emergence of emergency situation at the drift on the territory of the Russian Federation of some diseases constituting population danger is carried out: plagues (in pulmonary and bubonic forms), cholera, hemorrhagic fevers with the leading contact mechanism of transfer of the activator, especially dangerous the ortopoxvirus and the coronavirus of infections, the Crimean hemorrhagic fever, poliomyelitis.