The continuous expansion and spread of human brucellosis in the Xinjiang Uygur Autonomous Region: evidence from epidemiological and strains' genotyping-based analysis.

IF 4 2区 生物学 Q2 MICROBIOLOGY
Zhiguo Liu, Bo Li, Chuizhao Xue, Min Yuan, Zhenjun Li, Junling Sun, Canjun Zheng
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Abstract

Human brucellosis is a severe public health threat in Xinjiang; however, the epidemiological evolution and molecular correlation of strains are still unclear. In this study, join point regression analysis, spatiotemporal scan analysis, conventional biotyping approaches, and multiple locus variable-number tandem repeat analysis (MLVA) were applied to characterize the epidemiological landscape. A total of 78,689 cases were reported from 1957 to 2023. The average annual reported cases and incidence rates were 1174.46 and 5.28/100,000, respectively. Join point analysis revealed that disease incidence trends increased from 2004 (329, 1.77/100,000) to 2023 (9,334, 36.08/100,000) (AAPC = 17.26, P = 0.00), and affected counties expanded from 21 in 2004 to 100 in 2023, implying that human brucellosis continues to worsen. In 2023, the incidence rates in most counties in southern Xinjiang were higher than 2.0/100,000, and human brucellosis has become endemic in southern Xinjiang. These data demonstrate that human brucellosis is continuously spreading and expanding in Xinjiang. High incidence rate of clusters was detected in North Xinjiang from 2013 to 2023, involving 54 counties. The substantial increase in ruminant farming has increased the risk of infection in humans. A total of 28 Brucella strains were isolated in patients, all B. melitensis bv. 3. MLVA revealed that the dominant genotypes consisted of strains from different areas, hosts, and years; strains from a common original continuously spread, small ruminant trade and transfer contributed to the spread of strains in adjacent regions. Therefore, strengthening surveillance and control of animal brucellosis is vital for preventing its further spread.

人布鲁氏菌病在新疆维吾尔自治区的持续扩大和传播:来自流行病学和菌株基因分型分析的证据
人布鲁氏菌病是新疆严重的公共卫生威胁;然而,菌株的流行病学演变和分子相关性尚不清楚。本研究采用联点回归分析、时空扫描分析、传统生物分型方法和多位点可变数串联重复序列分析(MLVA)对流行病学景观进行了表征。1957年至2023年共报告78,689例。年平均报告病例数为1174.46例,发病率为5.28/10万。联点分析显示,从2004年(3291.77 /10万)到2023年(9334.36.08 /10万),疾病发病率呈上升趋势(AAPC = 17.26, P = 0.00),发病县从2004年的21个增加到2023年的100个,表明人类布鲁氏菌病继续恶化。2023年,南疆大部分县发病率高于2.0/10万,人布鲁氏菌病已成为南疆地区流行病。这些数据表明,人间布鲁氏菌病在新疆持续传播和扩大。2013 - 2023年,新疆北部有54个县出现聚集性病例高发。反刍动物养殖的大量增加增加了人类感染的风险。患者共分离布鲁氏菌28株,均为梅利特氏杆菌。3. MLVA显示,优势基因型由来自不同地区、不同寄主和不同年份的菌株组成;毒株从共同的原源不断传播,小反刍动物的交易和转移促成了毒株在邻近地区的传播。因此,加强对动物布鲁氏菌病的监测和控制对于防止其进一步传播至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
BMC Microbiology
BMC Microbiology 生物-微生物学
CiteScore
7.20
自引率
0.00%
发文量
280
审稿时长
3 months
期刊介绍: BMC Microbiology is an open access, peer-reviewed journal that considers articles on analytical and functional studies of prokaryotic and eukaryotic microorganisms, viruses and small parasites, as well as host and therapeutic responses to them and their interaction with the environment.
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