The anthrax pathogen trapped in the soil forms spores that retain their viability and virulence for a long time. Analysis of the available data shows that the anthrax microbe can retain virulence in soil up to 1300 years. All this time, the soil remains dangerous for people during earthworks on the territory of anthrax soil foci. Soil foci of anthrax include anthrax burial grounds (burials), places of death, sites, spontaneous burials of animals killed by anthrax and other environmental objects containing the causative agent of anthrax. Under favorable conditions, the pathogen, being in the soil, can go through a full multiple biological cycle of its development. As a result, we observed a change in properties the pathogen isolated from soil samples taken from a 70 years age cattle burial ground. Key words: anthrax, burial ground, risk of infection, PCR
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