Problemy Osobo Opasnykh Infektsii最新文献

{"title":"In silico Research at the Stages of Designing Modern Means for Prevention of Plague (by the Example of Subunit Vaccines)","authors":"A. Budanova, T. N. Shchukovskaya","doi":"10.21055/0370-1069-2022-3-6-13","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-6-13","url":null,"abstract":"The purpose of this review was to analyze the findings of domestic and foreign researchers on the development of modern drugs for the specific prevention of plague and to illustrate the possibilities of using bioinformatics analysis at the design stages to create an effective and safe vaccine. Work on the creation of an effective new-generation plague vaccine is hampered by several factors associated primarily with the presence of mechanisms of evasion from the immune system of the macroorganism, as well as a large number of pathogenicity determinants in the plague agent. Due to the development of approaches that are based on in silico studies, there is a progressive development of vaccine technologies oriented primarily to the use of the most important immunogens of the plague microbe (F1 and V antigen). Studies aimed at improving the antigenic properties of F1 and LcrV, as well as work on bioinformatic search and analysis of additional promising components to be included in the composition of subunit vaccines are considered as topical applications of bioinformatics data analysis in developing the tools for enhancing the effectiveness of protection through vaccination with subunit preparations.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48844704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epizooty of Tularemia, Detected in the Population of the Common Vole in the Natural Focus of Steppe Type in the South-East of the Rostov Region in 2020","authors":"M. V. Zabashta, N. Pichurina, A. P. Khametova, A. Zabashta, I. V. Orekhov, O. P. Dobrovol’sky, V. Stakheev, E. S. Fomina, E. Kovalev, A. V. Fedchenko, A. Noskov","doi":"10.21055/0370-1069-2022-3-75-81","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-75-81","url":null,"abstract":"The aim of study was to conduct epizootiological monitoring of natural tularemia foci of the steppe type and investigate epizootic activity in the south-east of the Rostov Region.Materials and methods. An epizootiological survey was carried out on the territory of Remontnensky, Sal’sky and Peschanokopsky districts of the Rostov Region in 2019–2021. To capture and collect mammals, Ixodidae ticks and to study the samples of field material conventional methods were used.Results and discussion. Habitation of 16 species of small mammals, 6 species of Ixodidae ticks has been found. Molecular-genetic analysis of the voles has revealed the presence of the species Microtus arvalis obscurus in the studied area of the region. The circulation of the tularemia agent has been established in the population of common and social voles, forest mouse, hare, rook, Dermacentor marginatus, Hyalomma marginatum, removed from rooks. In May 2020, a high increase in the number of the social vole in the Remontnensky district (up to 21 %), in July 2020 – the common vole in the agrocenoses of the Sal’sky district (up to 33 %) was observed. An extensive epizooty of tularemia was detected in the population of common vole in the south-east of the Rostov Region and in adjacent territories in the Republic of Kalmykia and the Stavropol territory. Two cultures of the pathogen were isolated from the fallen and captured social voles, and four cultures – from the common vole. The isolated strains belong to the Holarctic subspecies of Francisella tularensis EryR. The results obtained attest to the activation of the natural tularemia focus in the south-east of the Rostov Region and its high epizootic activity.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41482265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rhamnose-Positive Strains of Plague Agent: Virulence and Epidemiological Significance","authors":"A. Sludsky, Z. Devdariani","doi":"10.21055/0370-1069-2022-3-38-44","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-38-44","url":null,"abstract":"The aim of the review is to show the groundlessness of the unconditional assessment of rhamnose-positive strains of plague pathogen as avirulent for most species of carriers and humans and having no epidemiological significance. The main carriers of rhamnose-positive strains are several species of voles and the Mongolian pika. The vast majority of experts are of the opinion that rhamnose-positive (“vole`s” and “pika`s”) strains of Yersinia pestis are avirulent or weakly virulent for many species of warm-blooded animals and humans, and therefore have no epidemiological significance. However, in a series of experiments on infecting marmots, ground squirrels, and large gerbils with rhamnose-positive strains, some of the experimental animals fell ill acutely and died from the plague. In nature, rhamnose-positive strains have been isolated from carcasses of relatively resistant red marmots. When evaluating the epidemiological significance of rhamnose-positive strains, such an important criterion as the presence or absence of effective factors and pathways of pathogen transmission in foci of the vole and pika types is omitted. Voles and pikas are not eaten; therefore, the contact route of infecting humans in these foci is impossible. The second way of transmission of the pathogen to humans – vector-borne – is difficult due to the lack of migration of vole fleas from burrows to the surface and their low efficiency as vectors. Nevertheless, cases of human infection with rhamnose-positive strains of the plague agent in the Caucasus and Mongolia give grounds to assert that at least some rhamnose-positive strains have a sufficiently high virulence and are capable of causing infectious process in humans as well. Therefore, epidemiological surveillance in the foci of plague of the vole and pika types cannot be totally abandoned. It can be conducted according to an abbreviated scheme.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46865891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classification of Municipalities in the Republic of Buryatia by the Level of Tick-Borne Viral Encephalitis Incidence","authors":"N. Ayugin, E. I. Andaev, A. Nikitin, S. S. Khankhareev, T. F. Istomina","doi":"10.21055/0370-1069-2022-3-45-52","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-45-52","url":null,"abstract":"Tick-borne viral encephalitis (TBVE) is one of the most significant natural-focal infections in the Russian Federation.The aim of the study was to analyze the current epidemiological situation on TBVE in the Buryat Republic in 2010–2020 with a subsequent differentiation of municipalities by epidemiological risk groups in order to elaborate proposals for optimization of preventive measures.Materials and methods. A retrospective analysis of the epidemiological situation on TBVE in the Buryat Republic was carried out using forms of federal statistical surveillance No. 2 “Information on infectious and parasitic diseases” over 2010–2020 and the data from the Reference Center of the Irkutsk Research Anti-Plague Institute of Siberia and Far East of the Rospotrebnadzor on the epidemiological situation and preventive measures in the municipalities of the constituent entity. Statistical processing was performed applying conventional methods of variation statistics. Based on calculated 95 % parametric confidence interval for the data on variability of the long-term average TBVE incidence in the municipalities of the Republic of Buryatia over a 10-year period, the entities were differentiated by epidemiological risk groups. QGis 2.18.28 and a set of open geodata OpenStreetMap were used for mapping.Results and discussion. All municipalities have been classified into five groups by the level of epidemiological risk: with zero TBVE incidence – 2 districts, with a low level – 4, medium – 8, high – 5, very high – 2. In addition, the administrative center has been placed into a separate group. Each individual group of municipalities is characterized by the number of TBVE cases, the level of morbidity, the frequency of seeking medical aid because of tick bites, the scope of specific and non-specific prevention measures. Recommendations for optimizing the tactics of TBVE prevention in certain municipal districts have been provided.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47111623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caspian Sandy Natural Focus: Phylogenetic History and Origin of Yersinia pestis Strains","authors":"P. A. Goryunova, G. A. Eroshenko, L. M. Kukleva, E. A. Naryshkina, E. A. Sosedova, N. Chervyakova, V. Kutyrev","doi":"10.21055/0370-1069-2022-3-61-69","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-61-69","url":null,"abstract":"The purpose of the work was to analyze the phylogenetic relations and origin of Yersinia pestis strains isolated in different periods of epizootic activity of the Caspian sandy natural focus (CSNF) of plague in the XX–XXI centuries.Materials and methods. We used 40 Y. pestis strains from CSNF and adjacent plague foci, isolated in 1922–2015. Carried out was whole genome sequencing of 19 Y. pestis strains from CSNF. Phylogenetic analysis was performed using whole genome SNP analysis based on 1914 identified SNPs. The search for marker SNPs was conducted using the Snippy 4.6 software. The phylogenetic tree was constructed using the Maximum Likelihood algorithm, the GTR nucleotide substitution model.Results and discussion. The whole genome SNP analysis has revealed that Y. pestis strains of the medieval biovar from CSNF belong to 2.MED1 phylogenetic lineage and fall into two major branches. One of them circulated in the focus in the first half of the XX century, and the other – in the second half of the XX – early XXI centuries. It is shown that strains of the first branch were the cause of outbreaks and individual cases of plague in the CSNF in the first half of the XX century. They are closely related to strains from the Caspian North-Western steppe and Volga-Ural sandy natural plague foci, which caused numerous outbreaks with high mortality rate in the same period. Y. pestis strains from the CSNF of the second half of the XX and early XXI centuries belong to the second phylogenetic branch of the 2.MED1 line, at the node of which the strains from the Northern Aral Sea region of 1945 lay. The latter were the predecessors of all strains isolated in the CSNF after a long inter-epizootic period that occurred in the middle of the XX century. There can also be traced a genetic relation between the strains from CSNF and the Dagestan plain-foothill focus.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43167168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bacterial Siderophores: Structure, Functions, and Role in the Pathogenesis of Infections","authors":"D. A. Kuznetsova, V. Rykova, O. Podladchikova","doi":"10.21055/0370-1069-2022-3-14-22","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-14-22","url":null,"abstract":"This review systematizes and analyzes the data published over the past decade, devoted to the study of low-molecular-weight high affinity iron chelators – siderophores. Siderophores, which are found in bacteria, fungi and mammals, are able to extract iron from insoluble inorganic compounds, and in the host organism – from complexes with proteins that perform the function of nonspecific protection of mammals from infections. The extracted iron is delivered to cells through surface protein receptors specific for each siderophore, as well as various protein transport systems that make up membranes. Siderophores play an important role in virulence in pathogenic bacteria, performing many functions in the host organism, in addition to providing microbes with iron and other biological metals. They participate in the storage of excess iron, toxic to cells, protect bacteria from reactive oxygen compounds, compete for iron with phagocytes, and have a harmful effect on host cells, acting as secreted bacterial toxin in some cases. Bacterial siderophores perform a signaling function and regulate both, their own synthesis and the synthesis of other virulence factors. Many pathogenic bacteria produce several siderophores that are active under different conditions, against various sources of iron in the host organism and at different stages of infectious process. The review presents the results of the experimental studies aimed at elucidating the structure and diverse functions of bacterial siderophores, the mechanisms of their biosynthesis and regulation of expression, as well as the role of these molecules in the physiology and virulence of pathogenic bacteria. Special emphasis is put on siderophores of bacteria causing particularly dangerous infections.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42349528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Flow Cytometry Study of Cellular Immunity in Rhesus Monkeys after Experimental Infection with SARS CoV 2 Virus","authors":"G. V. Borisevich, S. L. Kirillova, I. V. Shatokhina, V. Lebedev, S. S. Solov’ev, S. Syromyatnikova, N. Shagarova, N. Boyarskaya, N. G. Levkovich, D. A. Solyanik, A. F. Andrus, V. V. Rubtsov, V. T. Krotkov, V. Kulish, I. V. Surovyatkina, V. B. Kirillov, A. V. Koval’chuk, V. Pantyukhov, D. A. Kutaev, S. Borisevich","doi":"10.21055/0370-1069-2022-3-53-60","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-3-53-60","url":null,"abstract":"Cellular immunity plays an important role in the pathogenesis and formation of protective immune defense against the SARS‑CoV‑2 virus.The aim of the work was to study the cellular immunity of rhesus monkeys applying flow cytometry after experimental infection with the SARS‑CoV‑2 virus.Materials and methods. Male rhesus monkeys were intranasally inoculated with the SARS‑CoV‑2 virus, Isolate B strain and hCoV-19/Russia/SP48-1226/2020 strain (abbreviated name U-2), at a dose of 5.0 lg PFU. Using flow cytometry, the levels of 21 populations/subpopulations of mononuclear cells in the peripheral blood of animals were determined before experimental infection with the pathogen and on day 14 after infection. SARS‑CoV‑2 coronavirus RNA was assessed using real-time polymerase chain reaction. Determination of the titer of virus-neutralizing antibodies to the SARS‑CoV‑2 virus in the blood sera of animals was conducted through neutralization test evaluating the ability to suppress negative colonies.Results and discussion. Infection with Isolate B strain culture has led to an increase in the relative content of total T-lymphocytes (p˂0.2), cytotoxic T-lymphocytes (p˂0.1), as well as monocytes expressing the early activation marker CD25 (p˂0.2). The decrease in levels has been observed for total B-lymphocytes (p˂0.2) and T-helper cells (p˂0.1). Infection with the U-2 strain culture revealed an increase in the relative content of monocytes expressing the early activation marker CD25 (p˂0.2). Thus, for the first time in the Russian Federation, flow cytometry was used to study the cellular immunity of rhesus monkeys before and after experimental infection with the SARS‑CoV‑2 virus. The obtained information can be used for studying the pathogenesis of SARS‑CoV‑2 infection, course, and outcome of the disease, and developing strategies for vaccination and treatment.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47655018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficiency of Using the Hydrogen Peroxide Vapor Generator “Fhileas 75” for Disinfection of the Air Ducts of separately Ventilated system for Infected Animal Housing","authors":"V. Germanchuk, E. V. Kislitsina, О. A. Lobovikova, N. P. Mironova, N. Y. Shavina, M. Gordeeva","doi":"10.21055/0370-1069-2022-2-142-144","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-2-142-144","url":null,"abstract":"The aim of the work was to evaluate the efficiency of using the “Fhileas 75” hydrogen peroxide vapor generator for decontaminating the air ducts of the individually ventilated system, “Bio A.S.”, for housing of infected animals.Materials and methods. The hydrogen peroxide vapor generator “Fhileas 75” (France), a disinfectant manufactured by “FHILEASAFE” (7 % hydrogen peroxide solution and 0.15 % peracetic acid solution), separately ventilated system “Bio A.S.” (Germany) for the infected animal housing were applied in the work. Serratia marcescens 9 was used as test-culture.Results and discussion. The efficiency of using the hydrogen peroxide vapor generator “Fhileas 75” for decontamination of air ducts and internal surfaces of the rack of the individually ventilated system “Bio A.S.” on the test-culture S. marcescens 9 at 1·106 mc/ml concentration has been established (operation parameters of the individually ventilated system unit are as follows: air exchange rate – 60 changes per hour, air flow volume – 28 m3/hour, number of disinfection cycles – 5, disinfectant spraying time – 97 min, exposure time – 24 hours).","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42010906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Method for Determination of brucella suis Biovars Using Multilocus Real-time PCR","authors":"N. A. Osina, D. A. Sitmbetov, I. V. Domanina, O. Y. Lyashova, S. A. Shcherbakova, I. A. Kas’yan, Zh. A. Kas’yan, E. G. Bulgakova","doi":"10.21055/0370-1069-2022-2-107-114","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-2-107-114","url":null,"abstract":"The aim of the study was to develop a methodological approach to determination of Brucella suis biovars through multilocus PCR with real-time registration of results.Materials and methods. We used 16 strains of B. suis of various biovars, B. neotomae and B. canis – 2 strains of each. Determination of the taxonomic affiliation of Brucella strains was carried out according to the Bruce-ladder, Suis-ladder, BRU-DIF protocols. The selection of primers and probes was performed using the software on the website www.genscript.com and the GeneRanner 6.5.52 program. Fragment sequencing according to Sanger was performed on a 3500 XL genetic analyzer in accordance with the manufacturer’s recommendations. Nucleotide sequence homology was assessed using the BLAST algorithm and the GenBank NCBI database.Results and discussion. An analysis of the structural organization of IncP and GI-3 genomic islands has been carried out in B. suis strains of various biovars. It has been established that in strains of B. suis II, IV biovars and B. canis, the terminal part of the BRA0368 gene, comprising 21 nucleotides (repeated in the BRA0367 gene) and the “TAA” stop codon, as well as almost the entire sequence of the BRA0367 gene were lost, owing to homologous recombination in the IncP genome island. A 21-nucleotide direct repeat and the “TGA” stop codon of the BRA0367 gene replaced the analogous region of the BRA0368 gene which resulted in the deletion the size of 185 bp. No differences have been noted in the structure of GI-3 in biovars. The evidence obtained made it possible to develop the approach (SuisDIF) for differentiating B. suis biovars, based on the amplification of genes located in the IncP and GI-3 genomic islands using real-time PCR. Its specificity was confirmed in the study of B. suis strains from the fund of the State Collection of Pathogenic Bacteria of the Russian Research Anti-Plague Institute “Microbe”. The conducted studies expand and supplement the data on the genetic heterogeneity of Brucella species and biovars. The proposed method for differentiating biovars of B. suis using multilocus PCR with real-time registration of results enhances the capacities for Brucella identification using molecular-genetic methods.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47199396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic Markers for Detecting the DNA of Pathogenic Borrelia","authors":"N. I. Khammadov, A. Khamidullina","doi":"10.21055/0370-1069-2022-2-134-141","DOIUrl":"https://doi.org/10.21055/0370-1069-2022-2-134-141","url":null,"abstract":"The aim of the study was to analyze the genetic markers of Lyme disease pathogens, which can be used to specifically indicate maximum number of their strains and isolates. Materials and methods. The nucleotide sequences of various genes of Borrelia garinii, B. afzelii, B. burgdorferi were downloaded from the NCBI database (National Center for Biological Informatization). The occurrence of the analyzed nucleotide sequences in the genetic code of various organisms was determined in the nBLAST software utility. For the design of primers and probes, the Vector NTI 9.1.0 program (“Invitrogen Corporation”, Carlsbad, USA) was used. DNA was isolated using the MAGNO-sorb kit, version 100-200 (“AmpliSens”, Moscow, Russia), according to the manufacturer’s instructions. Primers and probes were synthesized at “Evrogen” company (Moscow, Russia). For PCR, reagents manufactured by “Synthol” company (Moscow, Russia) were applied.Results and discussion. In order to perform the reliable indication of pathogenic Borrelia, specific loci (genes) of B. garinii, B. afzelii, B. burgdorferi, which were significantly different from the genetic code of other representatives of the genus Borrelia and from the DNA of other organisms, have been determined by molecular-genetic methods. As a result of a preliminary determination of the analytical significance of the studied loci, the following genes and loci were selected for further work: pepX, clpA, ospA, p83/100, ospC and flaB, of which the flaB and ospA genes were selected for practical indication of pathogenic Borrelia DNA. The genetic markers of B. burgdorferi and B. afzelii are displayed during amplification of the flaB gene, while B. garinii and B. afzelii occur when the ospA gene is used as a genetic marker.","PeriodicalId":52264,"journal":{"name":"Problemy Osobo Opasnykh Infektsii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47273883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}