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Liu P, Wu J, Ma W, Yang Y, Lv L, Cai J, Liu Z, He J, Shang Y, Li Z, Cao X. Molecular detection and characterization of Coxiella burnetii in aborted samples of livestock in China. Acta Trop 2024; 254:107163. [PMID: 38428630 DOI: 10.1016/j.actatropica.2024.107163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/14/2023] [Accepted: 02/27/2024] [Indexed: 03/03/2024]
Abstract
Coxiella burnetii is the causative agent of zoonotic Q fever. Animals are the natural reservoirs of C. burnetii, and domestic livestock represent the major sources of human infection. C. burnetii infection in pregnant females may causes abortion during late pregnancy, whereby massive shedding of C. burnetii with abortion products becomes aerosolized and persists in the environment. Therefore, monitoring and surveillance of this infection in livestock is important for the prevention of the C. burnetii transmission. Previous serological surveys have shown that C. burnetii infection is endemic in livestock in China. However, few data are available on the diagnosis of C. burnetii as a cause of abortion by molecular methods in livestock. To get a better understanding of the impact of C. burnetii infection on domestic livestock in China, a real-time PCR investigation was carried out on collected samples from different domestic livestock suffering abortion during 2021-2023. A total of 338 samples collected from eight herds of five livestock species were elected. The results showed that 223 (66 %) of the collected samples were positive for C. burnetii DNA using real-time PCR. For the aborted samples, 82 % (128/15) of sheep, 81 % (34/42) of goats, 44 % (15/34) of cattle, 69 % (18/26) of camels, and 50 % (17/34) of donkeys were positive for C. burnetii. Besides, 44 % (8/18) and 4 % (1/25) of asymptomatic individuals of sheep and donkey were also positive for C. burnetii. In addition, the positive samples were further confirmed by amplification and sequencing of the C. burnetii-specific isocitrate dehydrogenase (icd) gene. Phylogenetic analysis based on specific gene fragments of icd genes revealed that the obtained sequences in this study were clustered into two different groups associated with different origin of hosts and geographic regions. This is the first report confirming that C. burnetii exists in aborted samples of sheep, goats, cattle, donkeys and camels in China. Further studies are needed to fully elucidate the epidemiology of this pathogen in livestock as well as the potential risks to public health.
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Affiliation(s)
- Ping Liu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jinyan Wu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Weimin Ma
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Yamin Yang
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Lv Lv
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jiang Cai
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Zhijie Liu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jijun He
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Youjun Shang
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Zhaocai Li
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
| | - Xiaoan Cao
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
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Zhu L, Zhang C, Liang C, Peng L, Yan H, Liang X, Xu Y. Molecular epidemiological characteristics of osteoarthritis-associated Brucella melitensis in China: evidence from whole-genome sequencing-based analysis. Ann Clin Microbiol Antimicrob 2024; 23:18. [PMID: 38402187 PMCID: PMC10893595 DOI: 10.1186/s12941-024-00671-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/20/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Brucellosis, developing complications including arthritis, spondylitis, sacroiliitis, and osteomyelitis, is one of the most common zoonotic diseases in the current world which causes economic losses to the livestock industry and is a great public health concern. Brucella melitensis are the main pathogen of brucellosis epidemics in China, most of which are located in northern China. However, there is limited knowledge about the epidemiology of osteoarthritis-associated brucellosis. This study was aimed to reveal the prevalence of osteoarthritis-associated brucellosis in Inner Mongolia and also to investigate the molecular characteristics of B. melitensis isolates. METHODS AND RESULTS In 2018, the osteoarthritis symptoms of brucellosis in the Brucellosis department of a hospital in Inner Mongolia were investigated. Twenty osteoarthritis-associated B. melitensis strains, isolated from the inpatients in Inner Mongolia during 2013-2017, were subjected to whole genome sequencing. The multilocus sequence type (MLST) and core genome SNP (cgSNP) analysis were conducted to detect molecular epidemiological characteristics. The incidence of brucellosis osteoarthritis symptoms in males (85/120, 70.8%) was significantly higher than that in females (35/120, 29.2%), and the age of patients was concentrated between 41 and 60 years old. In silico analyses indicated ST8 was the prevalent sequence type and the transmission of osteoarthritis-associated B. melitensis among different geographical areas. All strains carry virulence genes, including cgs, lpsA, manCoAg, pgm, pmm, virB4, wbdA and wboA. CONCLUSION Our study showed the close epidemiologically connection of osteoarthritis-associated B. melitensis strains in northern China. And ST8 was the prevalent sequence type which need our attention.
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Affiliation(s)
- Lei Zhu
- The Second Affiliated Hospital of Soochow University, Soochow, China
- Hulunbuir People's Hospital, Hulunbuir, China
| | - Chi Zhang
- Hulunbuir People's Hospital, Hulunbuir, China
| | - Chen Liang
- Hulunbuir People's Hospital, Hulunbuir, China
| | - Li Peng
- Hulunbuir People's Hospital, Hulunbuir, China
| | - Huanyu Yan
- Hulunbuir People's Hospital, Hulunbuir, China
| | - Xiuwen Liang
- Hulunbuir City Sino-Mongolian Hospital, Hulunbuir, China.
| | - Youjia Xu
- The Second Affiliated Hospital of Soochow University, Soochow, China.
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Pan H, Jiao Z, Li H, Li S, Xu L, Li S, Meng Y, Fu Y, Chen T, Chen Q, Chen S, Du L, Man C, Wang F, Gao H. Sheep and goat pathogen database: a pathogen data integration and analysis database of sheep and goat infectious diseases. Front Microbiol 2024; 14:1299303. [PMID: 38282733 PMCID: PMC10811017 DOI: 10.3389/fmicb.2023.1299303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/28/2023] [Indexed: 01/30/2024] Open
Abstract
The prevalence of infectious diseases in sheep and goats has a significant impact on the development of the sheep and goat industry and public health security. The identification and analysis of pathogens are crucial for infectious disease research; however, existing databases pay little attention to sheep and goat diseases, and pathogen data are relatively scattered. Therefore, the effective integration, analysis and visualization of these data will help us conduct in-depth research on sheep and goat infectious diseases and promote the formulation of disease prevention and control strategies. This article considered the pathogens of 44 infectious diseases in sheep and goats as the main research objects and collected and downloaded relevant scientific literature, pathogen genomes, pathogen transcriptomes, pathogen occurrence records, and other data. The C# programming language and an SQL Server database were used to construct and realize the functions of the Sheep and Goat Pathogen Database (SGPD) within a B/S architecture based on the ASP.NET platform. The SGPD mainly provides an integrated platform for sheep and goat pathogen data retrieval, auxiliary analysis, and user upload, including several functionalities: (1) a Disease Introduction module that queries basic information regarding the 44 recorded sheep and goat infectious diseases, such as epidemiology, clinical characteristics, diagnostic criteria, and prevention and control measures; (2) an Omics Information module that allows users to query and download the genome and transcriptome data related to the pathogens of sheep and goat infectious disease, and provide sequence alignment functionality; (3) a Pathogen Structure module that enables users to view electron micrographs of pathogen structure and tissue sections related to sheep and goat disease from publicly published research; (4) a Literature Search module based on the "Pathogen Dictionary" search strategy that facilitates searches for published research related to pathogens of infectious disease; (5) a Science Popularization module that allows users to view popular science materials related to sheep and goat infectious diseases; and (6) a Public Health module that allows users to query the risk factors of zoonotic disease transmission and the corresponding related literature, and realize the visualization of pathogen distribution. The SGPD is a specialized sheep and goat pathogen information database that provides comprehensive resources and technical support for sheep and goat infectious disease research, prevention, and control.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Fengyang Wang
- Hainan Key Laboratory of Tropical Animal Reproduction and Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Laboratory of Haikou, School of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| | - Hongyan Gao
- Hainan Key Laboratory of Tropical Animal Reproduction and Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Laboratory of Haikou, School of Tropical Agriculture and Forestry, Hainan University, Haikou, China
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Xue H, Li J, Ma L, Yang X, Ren L, Zhao Z, Wang J, Zhao Y, Zhao Z, Zhang X, Liu Z, Li Z. Seroprevalence and Molecular Characterization of Brucella abortus from the Himalayan Marmot in Qinghai, China. Infect Drug Resist 2023; 16:7721-7734. [PMID: 38144222 PMCID: PMC10749113 DOI: 10.2147/idr.s436950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/13/2023] [Indexed: 12/26/2023] Open
Abstract
Objective Brucellosis is a serious public health issue in Qinghai (QH), China. Surveying the seroprevalence and isolation of B. abortus strains from marmots is key to understanding the role of wildlife in the maintenance and spread of brucellosis. Methods In this study, a set of methods, including a serology survey, bacteriology, antibiotic susceptibility, molecular genotyping (MLST and MLVA), and genome sequencing, were employed to characterize the two B. abortus strains. Results The seroprevalence of brucellosis in marmots was 7.0% (80/1146) by serum tube agglutination test (SAT); one Brucella strain was recovered from these positive samples, and another Brucella strain from a human. Two strains were identified as B. abortus bv. 1 and were susceptible to all eight drugs examined. The distribution patterns of the accessory genes, virulence associated genes, and resistance genes of the two strains were consistent, and there was excellent collinearity between the two strains on chromosome I, but they had significant SVs in chromosome II, including inversions and translocations. MLST genotyping identified two B. abortus strains as ST2, and MLVA-16 analysis showed that the two strains clustered with strains from northern China. WGS-SNP phylogenetic analysis showed that the strains were genetically homogeneous with strains from the northern region, implying that strains from a common lineage were spread continuously in different regions and hosts. Conclusion Seroprevalence and molecular clues demonstrated frequent direct or indirect contact between sheep/goats, cattle, and marmots, implying that wildlife plays a vital role in the maintenance and spread of B. abortus in the Qinghai-Tibet Plateau.
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Affiliation(s)
- Hongmei Xue
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Jiquan Li
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Li Ma
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Xuxin Yang
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Lingling Ren
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Zhijun Zhao
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Jianling Wang
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Yuanbo Zhao
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Zhongzhi Zhao
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Xuefei Zhang
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, People’s Republic of China
| | - Zhiguo Liu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Zhenjun Li
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
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Chang J, Wang N, Zhan JP, Zhang SJ, Zou DY, Li F, Zhang Y, Li YS, Hu P, Lu SY, Liu ZS, Ren HL. A recombinase polymerase amplification-SYBR Green I assay for the rapid and visual detection of Brucella. Folia Microbiol (Praha) 2023:10.1007/s12223-023-01115-2. [PMID: 38041745 DOI: 10.1007/s12223-023-01115-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 11/14/2023] [Indexed: 12/03/2023]
Abstract
Brucellosis is a zoonosis caused by Brucella, which poses a great threat to human health and animal husbandry. Pathogen surveillance is an important measure to prevent brucellosis, but the traditional method is time-consuming and not suitable for field applications. In this study, a recombinase polymerase amplification-SYBR Green I (RPAS) assay was developed for the rapid and visualized detection of Brucella in the field by targeting BCSP31 gene, a conserved marker. The method was highly specific without any cross-reactivity with other common bacteria and its detection limit was 2.14 × 104 CFU/mL or g of Brucella at 40 °C for 20 min. It obviates the need for costly instrumentation and exhibits robustness towards background interference in serum, meat, and milk samples. In summary, the RPAS assay is a rapid, visually intuitive, and user-friendly detection that is highly suitable for use in resource-limited settings. Its simplicity and ease of use enable swift on-site detection of Brucella, thereby facilitating timely implementation of preventive measures.
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Affiliation(s)
- Jiang Chang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Nan Wang
- Jilin Academy of Animal Husbandry and Veterinary Medicine, Changchun, China
| | - Jun-Peng Zhan
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
- College of Medicine, Dalian University, Dalian, China
| | - Shi-Jun Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - De-Ying Zou
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
- Panjin Center for Inspection and Testing, Panjin, China
| | - Feng Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
- Shandong Binzhou Animal Science and Veterinary Medicine Institute, Binzhou, China
| | - Ying Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Yan-Song Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Pan Hu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Shi-Ying Lu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Zeng-Shan Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China
| | - Hong-Lin Ren
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, College of Animal Sciences, Jilin University, Changchun, China.
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Xue H, Zhao Z, Wang J, Ma L, Li J, Yang X, Ren L, Xu L, Liu Z, Li Z. Native circulating Brucella melitensis lineages causing a brucellosis epidemic in Qinghai, China. Front Microbiol 2023; 14:1233686. [PMID: 37799605 PMCID: PMC10547896 DOI: 10.3389/fmicb.2023.1233686] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/25/2023] [Indexed: 10/07/2023] Open
Abstract
Since 2010, the cases and incidences of human brucellosis have been increasing annually in Qinghai (QH) Province. Molecular epidemiology and phylogenetic analyses of strains from this region are crucial to better understand the transmission of the disease and the evolutionary patterns of Brucella strains. In this study, classical bio-typing assay, multilocus variable-number tandem repeat analysis, and the whole-genome sequencing-single-nucleotide polymorphism approach were used to illustrate the epidemiological and evolutionary patterns of Brucella melitensis. A total of 54 B. melitensis bv. 3 strains were isolated and molecularly characterized, with all strains belonging to the East Mediterranean lineages. Cross-regional transmission events (i.e., between counties) were caused by common sources of infection, suggesting that predominant circulating genotypes are endemic in different regions. Strengthening surveillance in animal brucellosis and controlling infected animals' cross-border movement are necessary. Two strains isolated from humans and marmots were clustered in the same sub-clade, implying the possible existence of direct and/or indirect contact between sheep (and goats) and wildlife (marmots), but this needs to be verified by further investigations. The global-scale phylogenetic analysis indicated that 54 strains sorted into six subclades, four of which formed independent lineages, suggesting that the increase in the incidence rate of human brucellosis may be caused by local circulating lineages. Further strengthening the serology and pathogen surveillance of animals (wildlife) and humans will contribute to an in-depth understanding of the transmission chain of human brucellosis in this region.
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Affiliation(s)
- Hongmei Xue
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Zhijun Zhao
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Jianling Wang
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Li Ma
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Jiquan Li
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Xuxin Yang
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Lingling Ren
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Liqing Xu
- Department of Brucellosis Prevention and Control, Qinghai Institute for Endemic Disease Prevention and Control, Xining, Qinghai, China
| | - Zhiguo Liu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou, China
| | - Zhenjun Li
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
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Tan Q, Wang Y, Liu Y, Tao Z, Yu C, Huang Y, Yang X, Ying X, Hu Y, Li S. Molecular epidemiological characteristics of Brucella in Guizhou Province, China, from 2009 to 2021. Front Microbiol 2023; 14:1188469. [PMID: 37426016 PMCID: PMC10326899 DOI: 10.3389/fmicb.2023.1188469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/31/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Brucellosis was made statutorily notifiable in 1955, in China, while in Guizhou Province, the pathogen of human brucellosis was isolated for the first time in 2011. However, currently, the brucellosis epidemic is becoming more and more severe in Guizhou Province. The type distribution and genetic characteristics of Brucella in Guizhou Province, as well as its evolutionary relationship with domestic and foreign strains, are still unclear. Methods MLST, MLVA, and rpoB typing techniques were used for the molecular epidemiological study of the 83 Brucella isolates in Guizhou province. Results Among the 83 Brucella strains, MLST identified three ST genotypes, of which ST39 is a newly reported type in China. MLVA-16 generated 49 genotypes, and MLVA-11 generated 5 known genotypes and 2 unreported genotypes. Six genotypes were identified by rpoB technology. Discussion MLVA has a high resolution, but differences at the Bruce 04 and 16 loci cannot exclude associations between epidemics, and combining MLST and rpoB typing methods for epidemiologic tracing can avoid erroneous judgments. Moreover, through the combined analysis of the three typing techniques, the possible origin of the new Brucella can be reasonably inferred, which is also conducive to promoting the subsequent research of the novel Brucella.
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Affiliation(s)
- Qinqin Tan
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, University of Guizhou Medical, Guiyang, Guizhou, China
| | - Yue Wang
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
| | - Ying Liu
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
| | - Zhongfa Tao
- Center for Disease Control and Prevention of Guizhou Provincial, Institute of Infectious Disease Control, Guiyang, Guizhou, China
| | - Chun Yu
- Center for Disease Control and Prevention of Guizhou Provincial, Institute of Infectious Disease Control, Guiyang, Guizhou, China
| | - Yan Huang
- Center for Disease Control and Prevention of Guizhou Provincial, Institute of Infectious Disease Control, Guiyang, Guizhou, China
| | - Xinggui Yang
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
| | - Xia Ying
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, University of Guizhou Medical, Guiyang, Guizhou, China
| | - Yong Hu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, University of Guizhou Medical, Guiyang, Guizhou, China
| | - Shijun Li
- Laboratory Center, Center for Disease Control and Prevention of Guizhou Provincial, Guiyang, Guizhou, China
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, University of Guizhou Medical, Guiyang, Guizhou, China
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Rossetti CA, Maurizio E, Rossi UA. Comparative Review of Brucellosis in Small Domestic Ruminants. Front Vet Sci 2022; 9:887671. [PMID: 35647101 PMCID: PMC9133814 DOI: 10.3389/fvets.2022.887671] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
Brucella melitensis and Brucella ovis are the primary etiological agents of brucellosis in small domestic ruminants. B. melitensis was first isolated in 1887 by David Bruce in Malta Island from spleens of four soldiers, while B. ovis was originally isolated in Australia and New Zealand in early 1950's from ovine abortion and rams epididymitis. Today, both agents are distributed worldwide: B. melitensis remains endemic and associated with an extensive negative impact on the productivity of flocks in -some regions, and B. ovis is still present in most sheep-raising regions in the world. Despite being species of the same bacterial genus, B. melitensis and B. ovis have extensive differences in their cultural and biochemical characteristics (smooth vs. rough colonial phases, serum and CO2 dependence for in vitro growth, carbohydrate metabolism), host preference (female goat and sheep vs. rams), the outcome of infection (abortion vs. epididymitis), and their zoonotic potential. Some of these differences can be explained at the bacterial genomic level, but the role of the host genome in promoting or preventing interaction with pathogens is largely unknown. Diagnostic techniques and measures to prevent and control brucellosis in small ruminants vary, with B. melitensis having more available tools for detection and prevention than B. ovis. This review summarizes and analyzes current available information on: (1) the similarities and differences between these two etiological agents of brucellosis in small ruminants, (2) the outcomes after their interaction with different preferred hosts and current diagnostic methodologies, (3) the prevention and control measures, and (4) alerting animal producers about the disease and raise awareness in the research community for future innovative activities.
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Affiliation(s)
- Carlos Alberto Rossetti
- Instituto de Patobiología Veterinaria, Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), N. Repetto y de Los Reseros, Buenos Aires, Argentina
| | - Estefanía Maurizio
- Instituto de Patobiología Veterinaria, Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), N. Repetto y de Los Reseros, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (Conicet), Buenos Aires, Argentina
| | - Ursula Amaranta Rossi
- Instituto de Patobiología Veterinaria, Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), N. Repetto y de Los Reseros, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (Conicet), Buenos Aires, Argentina
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Matle I, Ledwaba B, Madiba K, Makhado L, Jambwa K, Ntushelo N. Characterisation of Brucella species and biovars in South Africa between 2008 and 2018 using laboratory diagnostic data. Vet Med Sci 2021; 7:1245-1253. [PMID: 33974356 PMCID: PMC8294379 DOI: 10.1002/vms3.483] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 02/22/2021] [Accepted: 03/09/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Brucellosis is an infectious zoonotic bacterial disease of humans and other animals. In the Republic of South Africa (RSA), animal brucellosis is widespread and the current available data on the prevalence of this disease rely solely on serological testing. The primary limitation of brucellosis serology is the lack of discriminatory powers to differentiate between Brucella species and biovars as well as the cross-reactivity observed with other Gram-negative bacteria. AIM The aim of this study was to conduct a retrospective laboratory-based survey on Brucella species and biovars isolated from various animal species in SA between 2008 and 2018. MATERIAL AND METHODS The isolation of Brucella species and biovar typing was performed using conventional microbiological techniques. RESULTS AND DISCUSSION A total of 963 strains of Brucella species were included in this study with a frequency of detection for B. abortus (n = 883; 91.6%) followed by B. melitensis (n = 42; 4.4%), B. ovis (n = 29; 3.0%) and B. canis (n = 9; 0.9%). Of the 883 strains of B. abortus, 90.1% were typed as B. abortus biovar-1 while 5.7% as B. abortus biovar-2, and 3.3% and 0.5% were B. abortus S19 and B. abortus RB51 vaccine strains, respectively. Among the 42 B. melitensis strains, 71.4% were reported as B. melitensis biovar-1 and 26.2% as B. melitensis biovar-3 while 2.4% was B. melitensis biovar-2. CONCLUSION A retrospective study, such as this one, provides useful information that can be critical in formulating policies and strategies for the control and eradication of brucellosis in animal populations in RSA.
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Affiliation(s)
- Itumeleng Matle
- Bacteriology DivisionARC‐Onderstepoort Veterinary ResearchPretoriaSouth Africa
| | - Betty Ledwaba
- Department of Veterinary Tropical DiseasesUniversity of PretoriaPretoriaSouth Africa
| | - Karabelo Madiba
- Biotechnology DivisionARC‐Onderstepoort Veterinary ResearchPretoriaSouth Africa
| | - Lavhelesani Makhado
- Bacteriology DivisionARC‐Onderstepoort Veterinary ResearchPretoriaSouth Africa
| | - Kudakwashe Jambwa
- Bacteriology DivisionARC‐Onderstepoort Veterinary ResearchPretoriaSouth Africa
| | - Nombasa Ntushelo
- Biometry DivisionAgriculture Research CouncilStellenboschSouth Africa
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10
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Wang H, Xu WM, Zhu KJ, Zhu SJ, Zhang HF, Wang J, Yang Y, Shao FY, Jiang NM, Tao ZY, Jin HY, Tang Y, Huo LL, Dong F, Li ZJ, Ding H, Liu ZG. Molecular investigation of infection sources and transmission chains of brucellosis in Zhejiang, China. Emerg Microbes Infect 2020; 9:889-899. [PMID: 32284015 PMCID: PMC7241503 DOI: 10.1080/22221751.2020.1754137] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In the present study, a total of 7793 samples from 5 different types of hosts were collected and tested, with a seroprevalence of 2.4% (184/7793). Although the seroprevalence of human and animal brucellosis is relatively low, numbers of human brucellosis cases reported have increased continuously from 2004 to 2018. A total of 118 Brucella strains containing 4 biotypes were obtained, including Brucella melitensis bv.1 (n = 8) and bv.3 (n = 106), Brucella abortus bv.3 (n = 3) and bv.7 (n = 1). Twenty-one shared MLVA-16 genotypes, each composed of 2 to 19 strains obtained from different hosts, suggest the occurrence of a brucellosis outbreak epidemic with multiple source points and laboratory infection events. Moreover, 30 shared MLVA-16 genotypes were observed among 59.6% (68/114) B. melitensis isolates from Zhejiang and strains from other 21 different provinces, especially northern provinces, China. The analysis highlighted the imported nature of the strains from all over the northern provinces with a dominant part from the developed areas of animal husbandry. These data revealed a potential transmission pattern of brucellosis in this region, due to introduced infected sheep leading to a brucellosis outbreak epidemic, and eventually causing multiple laboratory infection events. It is urgent to strengthen the inspection and quarantine of the introduced animals.
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Affiliation(s)
- Heng Wang
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Wei-Min Xu
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Kuang-Ji Zhu
- Jinhua WuCheng District Center for Disease Control and Prevention, WuCheng, People's Republic of China
| | - Su-Juan Zhu
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Hong-Fang Zhang
- Tongxiang Shi Center for Disease Control and Prevention, Tongxiang, People's Republic of China
| | - Jia Wang
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Yang Yang
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Feng-Yao Shao
- Jinhua WuCheng District Center for Disease Control and Prevention, WuCheng, People's Republic of China
| | - Neng-Ming Jiang
- Jinhua Jindong District Center for Disease Control and Prevention, Jindong, People's Republic of China
| | - Zhen-Yang Tao
- Jinhua Jindong District Center for Disease Control and Prevention, Jindong, People's Republic of China
| | - Hang-Yi Jin
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Yi Tang
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Liang-Liang Huo
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Fang Dong
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Zhen-Jun Li
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Hua Ding
- Hangzhou Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Zhi-Guo Liu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
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11
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Gumaa MM, Li Z, Cao X, Zhang N, Lou Z, Zhou J, Fu B. Specific Detection and Differentiation Between Brucella melitensis and Brucella abortus by a Duplex Recombinase Polymerase Amplification Assay. Front Vet Sci 2020; 7:539679. [PMID: 33330681 PMCID: PMC7732630 DOI: 10.3389/fvets.2020.539679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/12/2020] [Indexed: 11/21/2022] Open
Abstract
Brucellosis is a highly contagious zoonosis caused by a species under the genus Brucella. A duplex recombinase polymerase amplification (Duplex RPA) assay for the specific detection of Brucella melitensis and Brucella abortus was developed in this study. Primers were designed targeting hypothetical protein genes and membrane transporter genes of B. melitensis and B. abortus, respectively. The newly developed assay was validated for its analytical sensitivity and specificity. Different samples were collected from the Qinghai, Inner Mongolia, and Xinjiang provinces. After DNA extraction, the samples were analyzed by Duplex RPA, real-time PCR, and multiplex AMOS PCR to estimate the prevalence of brucellosis in sheep and yak in West China. The analytical sensitivities of Duplex RPA were 9 × 102 plasmid copies of B. melitensis and 9 × 101 plasmid copies of B. abortus, but by mixing the reaction tubes after 4 min of incubation, the sensitivities were 4 × 100 and 5 × 100 copies of B. melitensis and B. abortus, respectively. There was no cross-reactivity with Brucella suis, Chlamydia abortus, Salmonella typhimurium, Escherichia coli, and Toxoplasma gondii. The screening of field samples by Duplex RPA revealed that the prevalence of B. melitensis in sheep and yak was 75.8% and the prevalence of B. abortus was 4.8%. Multiplex AMOS PCR showed that the prevalence of B. melitensis was 19.3%, and that of B. abortus was 4.8%. It was concluded that the developed Duplex RPA is sensitive and specific to the detection of and differentiation between B. melitensis and B. abortus which will be useful in epidemiological surveillance and in the clinical settings.
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Affiliation(s)
- M M Gumaa
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,Kassala Veterinary Research Laboratory, Central Veterinary Research Laboratory, Animal Resources Research Corporation, Khartoum, Sudan
| | - Zhaocai Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoan Cao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Nianzhang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhongzi Lou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jizhang Zhou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Baoquan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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12
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Zhou K, Wu B, Pan H, Paudyal N, Jiang J, Zhang L, Li Y, Yue M. ONE Health Approach to Address Zoonotic Brucellosis: A Spatiotemporal Associations Study Between Animals and Humans. Front Vet Sci 2020; 7:521. [PMID: 32984409 PMCID: PMC7492289 DOI: 10.3389/fvets.2020.00521] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022] Open
Abstract
Background: Brucellosis is one of the most significant zoonosis over the world, threatening both veterinary and human public health. However, few studies were focused on nationwide animal brucellosis and made association with human brucellosis. Methodology and Principal Findings: We conducted a bilingual literature search on Brucella or brucellosis in China on the two largest databases (China National Knowledge Infrastructure and PubMed) and conducted a systematic review. A total of 1,383 Chinese and 81 English publications, published between 1958 and 2018 were identified. From them, 357 publications presenting 692 datasets were subjected to the meta-analysis. The overall prevalence rate is 1.70% (95% CI: 1.66-1.74), with a declining (until the late 1990s) and rising trend (starting the early 2000s). Interestingly, the animal with highest prevalence rate is canine (8.35%, 95% CI: 7.21-9.50), and lowest in cattle (1.22%, 95% CI: 1.17-1.28). The prevalence of Brucella in animals was unequally distributed among the 24 examined regions in China. Conclusions: Brucellosis is a reemerging disease for both humans and animals in China. The observed data suggests that dogs and yaks are the leading reservoirs for Brucella, and the provinces with highest prevalence rates in animals are Hubei, Sichuan, Inner Mongolia, Fujian, and Guizhou. Accordingly targeted intervention policy should be implemented to break the Brucella transmission chain between animals and humans in China.
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Affiliation(s)
- Kun Zhou
- Department of Veterinary Medicine & Institute of Veterinary Sciences, Zhejiang University College of Animal Sciences, Hangzhou, China
| | - Beibei Wu
- Zhejiang Province Center for Disease Control and Prevention, Hangzhou, China
| | - Hang Pan
- Department of Veterinary Medicine & Institute of Veterinary Sciences, Zhejiang University College of Animal Sciences, Hangzhou, China
| | - Narayan Paudyal
- Animal Health Research Division, Nepal Agricultural Research Council, Kathmandu, Nepal
| | - Jize Jiang
- College of Computer Science, Sichuan University, Chengdu, China
| | - Le Zhang
- College of Computer Science, Sichuan University, Chengdu, China
| | - Yan Li
- Department of Veterinary Medicine & Institute of Veterinary Sciences, Zhejiang University College of Animal Sciences, Hangzhou, China
- Zhejiang Provincial Laboratory of Preventive Veterinary Medicine, Hangzhou, China
| | - Min Yue
- Department of Veterinary Medicine & Institute of Veterinary Sciences, Zhejiang University College of Animal Sciences, Hangzhou, China
- Zhejiang Provincial Laboratory of Preventive Veterinary Medicine, Hangzhou, China
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13
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Liu ZG, Wang M, Ta N, Fang MG, Mi JC, Yu RP, Luo Y, Cao X, Li ZJ. Seroprevalence of human brucellosis and molecular characteristics of Brucella strains in Inner Mongolia Autonomous region of China, from 2012 to 2016. Emerg Microbes Infect 2020; 9:263-274. [PMID: 31997725 PMCID: PMC7034055 DOI: 10.1080/22221751.2020.1720528] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In the present study, a total of 1102304 serum samples were collected to detected human brucellosis between the years 2012 and 2016 in Inner Mongolia. Overall, an average of 3.79% anti-Brucella positive in Inner Mongolia was presented but the range of positive rates were among 0.90 to 7.07% in 12 regions. Seroprevalence of human brucellosis increased gradually from 2012 to 2016. However, the incidence rate of human brucellosis showed a declining trend. One hundred and seven Brucella strains were isolated and identified as B. melitensis species, and B. melitensis biovar 3 was the predominant biovar. MLVA-11 genotypes 116 was predominant and had crucial epidemiology to the human population. All 107 strains tested were sorted into 75 MLVA-16 genotypes, with 54 single genotypes representing unique isolates. This result revealed that these Brucellosis cases had epidemiologically unrelated and sporadic characteristics. The remaining 21 shared genotypes among two to four strains, confirming the occurrence of cross-infection and multiple outbreaks. Extensive genotype-events were observed between strains from this study and Kazakhstan, Mongolia, and Turkey, these countries were key members of the grassland silk road. Long-time trade in small ruminants (sheep) in these countries has possibly promoted the spread of Brucella spp. in these regions.
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Affiliation(s)
- Zhi-Guo Liu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.,Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, People's Republic of China
| | - Miao Wang
- Ulanqab Centre for Endemic Disease Prevention and Control, Jining, Inner Mongolia
| | - Na Ta
- Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, People's Republic of China
| | - Meng-Gang Fang
- Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, People's Republic of China
| | - Jing-Chuan Mi
- Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, People's Republic of China
| | - Rui-Ping Yu
- Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, People's Republic of China
| | - Yao Luo
- Farmer School of Business, Miami University, Oxford, OH, USA
| | - Xiaoan Cao
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, People's Republic of China
| | - Zhen-Jun Li
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
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14
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Liu ZG, Wang M, Zhao HY, Piao DR, Jiang H, Li ZJ. Investigation of the molecular characteristics of Brucella isolates from Guangxi Province, China. BMC Microbiol 2019; 19:292. [PMID: 31842756 PMCID: PMC6916230 DOI: 10.1186/s12866-019-1665-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 11/28/2019] [Indexed: 02/06/2023] Open
Abstract
Background Human brucellosis has become a severe public health problem in China’s Guangxi Province, and there has been higher prevalence of brucellosis in this region after 2010. Both multiple locus variable-number tandem repeat analysis (MLVA) and multilocus sequence typing (MLST) assay schedules were used to genotype isolates and determine relationships among isolates. Results A total of 40 isolates of Brucella were obtained from humans, pigs, and dogs from 1961 to 2016. There were at least three species of Brucella detected in Guangxi Province, Brucella melitensis, Brucella suis, and Brucella canis, with 16, 17, and 7 isolates, respectively. Of which B. suis biovar 3 was the predominant species resulting in pig brucellosis in the area examined before 2000s. Moreover, B. melitensis biovar 3 was found to be mainly responsible for human brucellosis during 2012–2016. All B. melitensis isolates in this study belonged to East Mediterranean lineage. MLVA-11 genotype 116 was the dominant genotype and represented 81.2% of the isolates. MLVA cluster analysis showed there to be 44% (7/16) brucellosis cases caused by B. melitensis with a profile of outbreak epidemic from 2012 to 2016. However, nearly 83.3% (20/24) of brucellosis cases resulting from both B. suis and B. canis showed no epidemiological links or sporadic characteristics. MLVA-16 analysis confirmed extensive genotype-sharing events between B. melitensis isolates from Guangxi and other northern provinces within China. These data revealed that there are potential epidemiology links among these strains. B. suis strains of this study showed a unique genetic lineage at the global level and may have existed historically in this area. However, present B. canis isolates were closely related to previously reported isolates in Korea, where they may have originated. MLST typing showed that the population structure of Brucella strains had changed considerably in this province; ST17 and ST21, two previously predominant populations appeared to have been replaced by recently emerging ST8 group. Conclusions Our investigation data have inspired the hypothesis that Guangxi Province had been subject to an imported human brucellosis epidemic. Our data suggest that strains found in Northern regions of China are the principal source of infections in recent cases of human brucellosis in Guangxi Province. Comparative genomic analysis from more strains is necessary to confirm this hypothesis. This work will facilitate better understanding of the epidemiology and improve the effectiveness of control and prevention of brucellosis in this region.
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Affiliation(s)
- Zhi-Guo Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China.,Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Huhhot, 010031, People's Republic of China
| | - Miao Wang
- Ulanqab Centre for Endemic Disease Prevention and Control, Jining, 012000, Inner Mongolia, China
| | - Hong-Yan Zhao
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Dong-Ri Piao
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Hai Jiang
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Zhen-Jun Li
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China.
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15
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Gumaa MM, Cao X, Li Z, Lou Z, Zhang N, Zhang Z, Zhou J, Fu B. Establishment of a recombinase polymerase amplification (RPA) assay for the detection of Brucella spp. Infection. Mol Cell Probes 2019; 47:101434. [PMID: 31401295 PMCID: PMC7127669 DOI: 10.1016/j.mcp.2019.101434] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/21/2019] [Accepted: 08/07/2019] [Indexed: 11/17/2022]
Abstract
Brucellosis is a worldwide re-emerging zoonosis. It has an economic impact due to abortion and loss of fertility in livestock. In this study, Real-time recombinase polymerase amplification (RT-RPA-BP26) targeting Brucella spp. bp26 gene and Lateral flow dipstick (LFD-RPA-IS711) combined with SYBR- Green recombinase polymerase amplification (RPA) targeting insertion sequence IS711 region of Brucella spp. bp26 gene, was developed to detect Brucella spp. from different sample types in domestic animals. The sensitivity and specificity of the two developed RPAs were compared with real-time PCR, PCR, and Rose Bengal Plate Test (RBPT). The analytical sensitivity and detection limit of Real-time RPA and LFD RPA were four and six copies per reaction respectively. The detection of six colony forming units (CFU) of the bacteria-bearing construct with the target sequence was within 20 min at 40 °C for Real-time RPA and 37 °C for LFD RPA. The LFD RPA could work at temperatures between 30 and 35 °C and could be completed within 10–30 min. No significant differences were observed when comparing the results from Real-time RPA and LFD RPA to Real-time PCR and PCR. Both methods showed no cross reactivity with Chlamydia abortus, Toxoplasma gondii, Salmonella typhimurium, and Escherichia coli. In conclusion, RPA is a useful and convenient field and point of care test for brucellosis. RPA essays have been developed for detection of Brucella spp. Kappa analysis showed perfect agreement with RT-PCT Nd PCR.
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Affiliation(s)
- M M Gumaa
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Xiaoan Cao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhaocai Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhongzi Lou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Nianzhang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhijun Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Jizhang Zhou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China
| | - Baoquan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China
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16
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Batista HR, Passos CTS, Nunes Neto OG, Sarturi C, Coelho APL, Moreira TR, Morini AC, Neves KAL, Casseb ADR, Gennari SM, Minervino AHH. Factors associated with the prevalence of antibodies against Brucella abortus in water buffaloes from Santarém, Lower Amazon region, Brazil. Transbound Emerg Dis 2019; 67 Suppl 2:44-48. [PMID: 31231951 DOI: 10.1111/tbed.13192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We evaluated the factors associated with the prevalence of antibodies against Brucella abortus in buffaloes in the municipality of Santarém, Western Pará, northern Brazil. The study was conducted on 60 farms, representing 25.8% of the total buffalo farms in the region. From those farms, a total of 426 buffaloes were sampled, males of any age and females more than 24 months of age, to avoid a false-positive reaction in the serological test due to vaccination. The Acidified Agglutination Serum Test was carried out on serum samples using B. abortus strain 1,119-3 as the antigen. Univariate and multivariate analysis were performed to investigate the association between brucellosis and potential risk factors. Of the 426 tested buffaloes, 29 were positive, resulting in an overall animal prevalence of antibodies against B. abortus at the animal level of 6.8% (4.6-9.6; 95% confidence interval). The herd level prevalence was 30% (18 of 60) and seroprevalence range within farms was from 0% to 100%. At the animal level, buffaloes raised in the floodplains tended (p = 0.06) to present a higher seroprevalence (9.70%) of antibodies against B. abortus than buffaloes raised in dry land (4.98%) and cows tended (p = 0.054) to have a higher seroprevalence than male buffaloes. Multivariate herd-level analysis revealed association between farm type and brucellosis seroprevalence (p = 0.015); dairy farms were two times more likely to have seropositive buffalo than beef farms. Our survey demonstrated a high farm seroprevalence of B. abortus in buffalo raised in an Amazonian ecosystem with positive animals found in one third of sampled farms.
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Affiliation(s)
- Helder Ribeiro Batista
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Santarém, Pará, Brazil.,Amazon University Center (UNAMA), Santarém, Brazil
| | | | - Osvaldo Gato Nunes Neto
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Santarém, Pará, Brazil.,Amazon University Center (UNAMA), Santarém, Brazil
| | - Cristiane Sarturi
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Santarém, Pará, Brazil
| | | | - Thiago Rocha Moreira
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Santarém, Pará, Brazil
| | - Adriana Caroprezo Morini
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Santarém, Pará, Brazil
| | | | | | - Solange Maria Gennari
- Faculty of Veterinary Medicine and Animal Science, FMVZ, University of São Paulo, São Paulo, Brazil.,University of Santo Amaro, Program of Master in Veterinary Medicine and Animal Welfare, São Paulo, São Paulo, Brazil
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17
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Genetic Characterization of Animal Brucella Isolates from Northwest Region in China. BIOMED RESEARCH INTERNATIONAL 2018; 2018:2186027. [PMID: 29862256 PMCID: PMC5976974 DOI: 10.1155/2018/2186027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/26/2018] [Accepted: 04/12/2018] [Indexed: 11/17/2022]
Abstract
Animal brucellosis is a reemerging disease in China, particular in northwest China. The Brucella species (even genus) are highly conserved; therefore the use of Multilocus sequencing typing (MLST: based on conserved housekeeping loci) is more suitable for discrimination at species or biovar level on Brucella. In this study, MLST was used to analyze the characterization of Brucella from sheep and yaks during 2015 and 2016. All 66 isolates were collected from northwest China, including Inner Mongolia, Xinjiang, Qinghai, and Gansu provinces. Isolates were cultured on Brucella agar medium and identified by MLST. MLST identified five ST types: ST8 (n = 55), ST7 (n = 2), ST3 (n = 5), ST1 (n = 2), and ST14 (n = 2). This analysis revealed that B. melitensis isolates exhibited high single genotypes (ST8) in the most northwest China. MLST of isolates provides helpful information on understanding genetic characterization of Brucella in northwest China.
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