A generalized analysis of the epidemiological and epizootiological situation on anthrax in the world in 2021 is presented. Provided is the forecast for the Russian Federation for 2022. In 2021, two cases of cutaneous form of anthrax were recorded in Russia among population living in the Siberian (the Republic of Tuva) and the North Caucasian (the Republic of Dagestan) Federal Districts. Epizootiological and epidemiological instability due to the infection was manifested in neighboring countries – Azerbaijan, Armenia, Kazakhstan, Kyrgyzstan, and Ukraine. Anthrax among farm and wild animals was registered in a number of countries in Asia, Africa, Europe, North and South America, and Australia. Human cases were noted mainly in Africa (Zimbabwe, Kenya, Uganda, China) and Asia (India, Indonesia, Iraq), and were caused by the contact and/or alimentary pathways of transmission of the pathogen as a result of forced slaughter of sick and/or butchering of fallen farm animals, consuming meat of sick and fallen cattle. The level of anthrax incidence among farm animals and humans in the Russian Federation in 2022 will be predetermined by the completeness of the implementation of regulated preventive measures, and, provided the strict introduction of comprehensive epizootiological and epidemiological surveillance, will be limited to sporadic cases of infection.
The results of the analysis of epidemiological and epizootiological situation on anthrax in the Russian Federation and in the world in 2019 are presented in the paper. The forecast of morbidity rates in the Russian Federation for 2020 is made. In 2019, five cases of cutaneous anthrax were registered in the Russian Federation in two regions of the North Caucasian Federal District – Republic of Dagestan (4) and Stavropol Territory (1), which is two cases plus as compared to 2018. Outbreaks of infection among livestock animals and humans were recorded in such neighboring countries as Azerbaijan, Armenia, Belarus, Kazakhstan, Kyrgyzstan and Tajikistan. The unfavorable epizootiological situation on anthrax was observed almost everywhere. The highest incidence rates among wild and livestock animals were found in a number of countries in Asia and Africa. Anthrax among people was registered mainly in African countries, infection occurred mainly by alimentary route, less often – through contact with carcasses, meat of animals. Anthrax morbidity rates among animals and humans in the Russian Federation in 2020 will be largely determined by the completeness of registration and coverage with specific immunization of livestock animals and groups of people under professional risk of infection and, if measures are fully implemented, incidence will not exceed single cases.
The purpose of the study was to conduct a retrospective analysis of the epizootiologic and epidemiologic situation of anthrax in the Republic of Crimea and to improve surveillance of this infection using geographic information systems (GIS technologies). Material and methods: In the process of considering specific features of manifestations of infection in different areas of the Crimean Peninsula and outbreaks of anthrax in animals and humans in 1922–2019, we analyzed and summarized data of reporting forms of the Interregional Department of Rospotrebnadzor in the Republic of Crimea and Sevastopol. ESRI’s ArcGIS 10 software was used as a GIS-platform. When zoning the administrative units of Crimea by the level of endemicity, we estimated epizootic indices for anthrax. Results: We observed a relatively safe epizootiologic and epidemiologic situation of anthrax in the Republic of Crimea. In 1922–2019, 211 potentially hazardous stationary sites located in nine districts and one city council and 13 anthrax burial sites in four districts were registered in Crimea. Most sites (182 or 86.3 %) appeared in 1932–1961, the peak anthrax activity occurred in 1942–1951, and the latest outbreaks of infection among animals and humans were registered in 1995. Taking into account the ability of anthrax spores to persist in soil for years, the administrative units of the Crimean Peninsula were zoned using GIS-technologies based on the established epizootic indices. As a result, the territory of the Republic of Crimea was divided into areas with different levels of risk of exposure to anthrax. We also studied the relationship between the endemic areas and local climatic and geographical conditions and found that the majority of stationary sites (167) were within the dry-steppe, typical steppe, and northern steppe zones of the Peninsula with dominating soddy calcareous, meadow chernozem, and chernozem types of soil.
A review of the epizootiological and epidemiological situation on anthrax in the world in 2020 was carried out. In the Russian Federation, five cases of human infection with cutaneous anthrax were registered in the entity of the North Caucasian Federal District – the Republic of Dagestan. A challenging situation was noted in the territory of border states – Azerbaijan, Georgia, Kazakhstan, Kyrgyzstan and Ukraine. Epizootics of anthrax among livestock and wild animals were identified mainly in African countries. At the same time, the largest number of confirmed human cases was detected in Africa (Zimbabwe, Kenya) and Asia (Indonesia). The infection of individuals with the causative agent of anthrax was primarily associated with the ingestion of meat from sick and dead anthrax animals, contact with animals during forced slaughter, skinning and processing of contaminated meat. The incidence of anthrax in the Russian Federation in 2021 will be determined by the realization of the planned volumes of preventive measures and, provided they are properly implemented, will be limited to identifying sporadic cases of infection that are potentially possible within the limits of certain regions of Russia.
Objective of the study was to assess the epizootiological and epidemiological situation on anthrax in the Volgograd Region in the period of 1920–2019, to zone the territory according to the degree of disadvantage as regards anthrax using geographic information technologies. Materials and methods. The reporting data of the Rospotrebnadzor Administration, Veterinary Committee in the Volgograd Region, and literature sources were studied. ESRI-ArcGIS 10 software was used as a GIS-platform. Epizootic index was applied in the zoning according to the degree of disadvantage regarding anthrax in the territories of the region. Results and discussion. Currently, 529 stationary potentially hazardous as regards anthrax areas have been registered in 33 districts of the Volgograd Region, 53 anthrax burial sites are accounted for in 20 districts. During the period of 1970–2019, 226 cases of infection of farm animals and 37 cases of anthrax among humans were detected. Most of the stationary potentially hazardous as regards anthrax areas (347 sites, 66 %) were formed in 1930–1949. Maximum activity was observed in 1930–1959. The zoning of the territory of the Volgograd Region was carried out using ESRI-ArcGIS 10 software, as a result of which the municipal districts were divided into four groups according to the degree of disadvantage regarding anthrax. The potential of different soil and landscape zones in the persistence of the anthrax microbe was studied. It has been found that chernozem, chestnut, dark-chestnut soil types, which occupying more than 50 % of the total region area and predominate in the zones of moderately arid and dry steppes, alongside alluvial meadow soils of river valleys, floodplains of rivers are very favorable for the persistence of the anthrax pathogen. The territory of the Volgograd Region is endemic for this infection and epizootiological and epidemiological well-being in the region largely depends on the completeness and timelines of preventive measures. The use of geographic information technologies provides a comprehensive analysis of the infection activity manifestations with reliable improvement of the anti-anthrax surveillance system and control in making differentiated managerial decisions.
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