The aim of the study was to analyze the epizootiological and epidemiological situation in the Primorsky Territory (1919–2020) and to zone the administrative districts in regard to anthrax. Materials and methods. Accounting and reporting documents, information and archival materials were collected and analyzed, statistical reference books and literature sources were used. A comprehensive epizootiological and epidemiological survey of 12 supposed places of anthrax burials and cattle burial grounds was carried out, and their biological hazard assessed. Results and discussion. Within the framework of updating the Cadastre of stationary potentially hazardous as regards anthrax areas in the Russian Federation (2005), the number of infected farm animals and human cases was specified: according to official data, over the period of 1930–1979, the disease in 173 animals and 34 people with five deaths was registered in 82 stationary unfavorable for anthrax areas of 22 municipalities of the region. Together with the veterinary service of the region, an audit of 12 supposed places of anthrax burials in seven districts of the region was conducted. Based on the results of a comprehensive epizootiological and epidemiological survey, high biological hazard was established for 2 and potential one – for 1 anthrax burials. The culture of Bacillus anthracis isolated on the territory of Primorsky Territory belongs to one of the canonical SNP clusters – A.Br.008/009 of the global genetic line A (subgroup A1). Five criteria for assessing the epizootiological and epidemiological disadvantage for anthrax and the ranking of indicators of the administrative territories in the region have been determined. Zoning of the administrative territories of the region according to risk of anthrax has been carried out. Prophylactic anti-epizootic and anti-epidemic measures have been put forward.

The aim of the study was to analyze the state of stationary potentially hazardous areas as regards anthrax in the Primorsky Territory and update the Cadastre of stationary potentially hazardous as regards anthrax areas (SPHA) of the Russian Federation (2005).Materials and methods. The collection and survey of accounting and reporting documents, archival and informational materials, records on anthrax from veterinary institutions, Rospotrebnadzor, municipalities by the 72 registered anthrax SPHA of the Primorsky Territory have been carried out. The reference book of the Russian Soviet Federative Socialist Republic’s settlements endemic for anthrax (1976), the Cadastre of the stationary potentially hazardous as regards anthrax areas in the Russian Federation (2005) were used.Results and discussion. The description of anthrax cases in the Primorsky Territory goes back to 1894, the official registration of the disease – since 1919. The last cases of the disease in farm animals and population were noted in Kavalerovsky and Oktyabrsky districts in 1979. When updating the SPHA (2005), information on 82 dormant sites of the Territory in 22 municipal and six urban districts was clarified. In six districts of the Territory, anthrax was not officially registered. Most of the SPHAs are centered on the Khanka plain, where the network of transport routes, the largest number of livestock and population are concentrated. The data on the number of sick animals and people over a period of 1919–1929 have not survived, and in the period between 1980 and 2020 anthrax was not reported in the region. 173 animals and 34 humans were diagnosed with anthrax in 1929–1979 in Primorye. High epizootic activity was noted in the period of 1919–1941. In the Asian part of the Russian Federation, Primorsky Territory belongs to the regions under a mild epizootic and epidemiological disadvantage as regards anthrax. Monitoring of anthrax has shown that the persistence of the pathogen in the soils of ten districts of the Territory could be facilitated by the absence of soil toxicity (86,8 %) and an average nutritional value (23,5 %) in relation to the anthrax microbe.

The results of updating the Cadastre of stationary anthrax-unfavorable points in the Russian Federation (2005) and the creation of databases for nine out of 11 subjects of the Far Eastern Federal District (in the Magadan Region and the Chukotka Autonomous District, anthrax was not officially registered) are presented, information on 1285 points has been updated, instead of 1089 previously recorded. For the period 1856–2008 according to official data and literary sources, 8346 heads of animals and 253 people fell ill in nine subjects. The largest share of sick animals (72.3 %) falls on the Republic of Buryatia, and people (45.1 %) — in the Zabaikalsky Territory. The years of manifestation of activity of 99.8 % of permanently unfavorable points for anthrax are known. Most of the new points were formed in 1890–1899 and 1930–1939. Anthrax on the territory of the Far Eastern Federal District was annually recorded from 1910 to 1989. The maximum epizootic activity was noted in the city of Blagoveshchensk in the Amur Region and in the village of Kyren in the Republic of Buryatia. Based on updated information on the former and renamed settlements in accordance with the territorial-administrative division of the country; specified locations of settlements, former collective and state farms, liquidated in the 90s of the twentieth century; data on years of activity, species and number of dead animals and sick people; Determination of the geographical coordinates of the SNP created a database of stationary anthrax-unfavorable points in six regions (Zabaikalsky, Kamchatka, Primorsky and Khabarovsk territories, Jewish Autonomous Okrug, Sakhalin and Amur regions.