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Du CH, Xiang R, Bie SS, Yang X, Yang JH, Yao MG, Zhang Y, He ZH, Shao ZT, Luo CF, Pu EN, Li YQ, Wang F, Luo Z, Du CB, Zhao J, Li M, Cao WC, Sun Y, Jiang JF. Genetic diversity and prevalence of emerging Rickettsiales in Yunnan Province: a large-scale study. Infect Dis Poverty 2024; 13:54. [PMID: 38982550 PMCID: PMC11234784 DOI: 10.1186/s40249-024-01213-4] [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: 03/24/2024] [Accepted: 06/03/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Rickettsia and related diseases have been identified as significant global public health threats. This study involved comprehensive field and systematic investigations of various rickettsial organisms in Yunnan Province. METHODS Between May 18, 2011 and November 23, 2020, field investigations were conducted across 42 counties in Yunnan Province, China, encompassing small mammals, livestock, and ticks. Preliminary screenings for Rickettsiales involved amplifying the 16S rRNA genes, along with additional genus- or species-specific genes, which were subsequently confirmed through sequencing results. Sequence comparisons were carried out using the Basic Local Alignment Search Tool (BLAST). Phylogenetic relationships were analyzed using the default parameters in the Molecular Evolutionary Genetics Analysis (MEGA) program. The chi-squared test was used to assess the diversities and component ratios of rickettsial agents across various parameters. RESULTS A total of 7964 samples were collected from small mammals, livestock, and ticks through Yunnan Province and submitted for screening for rickettsial organisms. Sixteen rickettsial species from the genera Rickettsia, Anaplasma, Ehrlichia, Neoehrlichia, and Wolbachia were detected, with an overall prevalence of 14.72%. Among these, 11 species were identified as pathogens or potential pathogens to humans and livestock. Specifically, 10 rickettsial organisms were widely found in 42.11% (24 out of 57) of small mammal species. High prevalence was observed in Dremomys samples at 5.60%, in samples from regions with latitudes above 4000 m or alpine meadows, and in those obtained from Yuanmou County. Anaplasma phagocytophilum and Candidatus Neoehrlichia mikurensis were broadly infecting multiple genera of animal hosts. In contrast, the small mammal genera Neodon, Dremomys, Ochotona, Anourosorex, and Mus were carrying individually specific rickettsial agents, indicating host tropism. There were 13 rickettsial species detected in 57.14% (8 out of 14) of tick species, with the highest prevalence (37.07%) observed in the genus Rhipicephalus. Eight rickettsial species were identified in 2375 livestock samples. Notably, six new Rickettsiales variants/strains were discovered, and Candidatus Rickettsia longicornii was unambiguously identified. CONCLUSIONS This large-scale survey provided further insight into the high genetic diversity and overall prevalence of emerging Rickettsiales within endemic hotspots in Yunnan Province. The potential threats posed by these emerging tick-borne Rickettsiales to public health warrant attention, underscoring the need for effective strategies to guide the prevention and control of emerging zoonotic diseases in China.
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Affiliation(s)
- Chun-Hong Du
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Rong Xiang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China
| | - Shuang-Shuang Bie
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Xing Yang
- Department of Medical Microbiology and Immunology, School of Basic Medicine, Dali University, Dali, 671000, PR China
| | - Ji-Hu Yang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China
| | - Ming-Guo Yao
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Yun Zhang
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Zhi-Hai He
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Zong-Ti Shao
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Chun-Feng Luo
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China
| | - En-Nian Pu
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Yu-Qiong Li
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Fan Wang
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Zhi Luo
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Chao-Bo Du
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Jie Zhao
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Miao Li
- Yunnan Key Laboratory for Zoonosis Control and Prevention, Yunnan Institute for Endemic Diseases Control and Prevention, Dali, 671000, PR China
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China.
| | - Yi Sun
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China.
| | - Jia-Fu Jiang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing, 100071, PR China.
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Teng ZQ, Yang L, Zhao N, Li XT, Dai LP, Zhang X, Shao TT, Han L, Zheng RJ, Wen BH, Kan B, Xu JG, Lu XB, Qin T. Emergence of Astrakhan rickettsial fever in China. J Infect 2024; 88:106136. [PMID: 38462076 DOI: 10.1016/j.jinf.2024.106136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 02/18/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Affiliation(s)
- Zhong-Qiu Teng
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Li Yang
- Infectious Disease and Liver Disease Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Na Zhao
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Xin-Ting Li
- Infectious Disease and Liver Disease Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Lu-Peng Dai
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Xue Zhang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Tong-Tong Shao
- Infectious Disease and Liver Disease Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Ling Han
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Rong-Jiong Zheng
- Infectious Disease and Liver Disease Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Bo-Hai Wen
- Beijing Institute of Microbiology and Epidemiology, Beijing, China.
| | - Biao Kan
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Jian-Guo Xu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Xiao-Bo Lu
- Infectious Disease and Liver Disease Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Tian Qin
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
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Yang H, Xu N, Yan M, Yang L, Wen S, Wang S, Qu C, Xu K, Yang X, Wang G. Comparison of metagenomic next-generation sequencing and conventional culture for the diagnostic performance in febrile patients with suspected infections. BMC Infect Dis 2024; 24:350. [PMID: 38532348 DOI: 10.1186/s12879-024-09236-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/19/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND Timely and accurate identification of pathogens is crucial for appropriate treatment and prognosis of infectious diseases. As an increasingly popular pathogen detection method, the performance of metagenomic next-generation sequencing (mNGS) in detecting pathogens in febrile patients with suspected infection requires further exploration. METHODS This study included 368 febrile patients with suspected infections who were admitted to the Infectious Disease Department of Qilu Hospital, Shandong University between January 5, 2021 and April 14, 2023. Both mNGS testing and conventional culture were performed in all patients. Clinical data of enrolled patients were collected, and the diagnostic performances of mNGS and culture were compared. RESULTS Of the 368 enrolled patients, 231 were finally diagnosed with infection and 137 were with diseases other than infection. The sensitivity (58.01% vs. 21.65%, p < 0.001) and negative predictive value (54.67% vs. 42.9%) of mNGS were superior to those of culture. In contrast, the culture exhibited higher specificity (99.27% vs. 85.40%, p < 0.001) and positive predictive value (98.84% vs. 87.01%) than mNGS. Among infected patients with positive mNGS results, 64 received adjusted antibiotic therapy including treatment transitions, antibiotic downgrading, and combination therapy. Among them, 9 had additional antifungal drugs and 21 patients had a treatment turning point based on the mNGS results and these patients recovered and discharged due to timely antibiotic adjustment. Both positive rates of puncture fluid mNGS and tissue mNGS were higher than those of culture in the patients who had prior antibiotic use, and this difference was statistically significant (p = 0.000). CONCLUSION mNGS is more sensitive and accurate than traditional culture, making it ideal for identifying pathogens and screening infectious diseases, especially for those with uncultivated or difficult-to-cultivate species. Early diagnosis allows for prompt treatment with targeted antibiotics, and mNGS is recommended when samples are limited.
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Affiliation(s)
- Hui Yang
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Nannan Xu
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Meichen Yan
- Department of Intensive Care Unit, Qilu Hospital, Cheeloo College of Medicine, ShandongUniversity, Jinan, Shandong, 250012, China
| | - Lulu Yang
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Sai Wen
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Shanshan Wang
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Chunmei Qu
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Ke Xu
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Xuying Yang
- Department of Scientific Affaires, Hugobiotech Co., Ltd., No.1, East Disheng Road, Beijing, 100176, China
| | - Gang Wang
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
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Luo S, Yang S, Liu A, Wu H, Gao L, Wu X, Dong Y, Li B, Ma W, Peng L, Bao F. Serological and molecular epidemiological investigation of Mediterranean spotted fever in Yunnan Province, China. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 118:105560. [PMID: 38262571 DOI: 10.1016/j.meegid.2024.105560] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 01/25/2024]
Abstract
OBJECTIVES Given the limited research and its potential hazards, the study aimed to determine the prevalence of Mediterranean spotted fever (MSF) caused by Rickettsia conorii (R. conorii), a tick-borne disease, in Yunnan Province, China. METHODS Through stratified sampling across five distinct regions in Yunnan, 5358 blood samples were obtained from the general healthy population. Enzyme-linked immunosorbent assay (ELISA), indirect immunofluorescence assay (IFA), and Polymerase chain reaction (PCR) were employed for analysis. RESULTS IFA identified 27 (0.50%) subjects with immunoglobulin G (IgG) positivity; none were positive for immunoglobulin M (IgM) via ELISA. PCR detected one individual with R. conorii outer membrane protein A (ompA). Significant seroprevalence variation was observed, particularly in Southern Yunnan (P = 0.032), with R. conorii subsp. conorii confirmed in the PCR-positive sample. CONCLUSIONS This research reveals a correlation between MSF prevalence, geography, and climate in Yunnan. The paucity of prior studies underscores MSF's potential diagnostic challenges in the region. Comprehensive understanding of the pathogen's distribution is pivotal for intervention. Given the study's scope and Yunnan's unique setting, additional research is advocated.
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Affiliation(s)
- Suyi Luo
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Shuyue Yang
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Aihua Liu
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China; Yunnan Provincial Key Laboratory of Public Health and Biosafety, School of Public Health, Kunming Medical University, Kunming 650500, China; Yunnan Province Key Laboratory of Children's Major Diseases Research, The Affiliated Children's Hospital, Kunming, Kunming Medical University, Kunming 650030, China; Yunnan Demonstration Base of International Science and Technology Cooperation for Tropical Diseases, Kunming 650500, China
| | - Hanxin Wu
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Li Gao
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Xinya Wu
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Yan Dong
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Bingxue Li
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Weijiang Ma
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Li Peng
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China
| | - Fukai Bao
- The Institute for Tropical Medicine, School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, China; Yunnan Provincial Key Laboratory of Public Health and Biosafety, School of Public Health, Kunming Medical University, Kunming 650500, China; Yunnan Province Key Laboratory of Children's Major Diseases Research, The Affiliated Children's Hospital, Kunming, Kunming Medical University, Kunming 650030, China; Yunnan Demonstration Base of International Science and Technology Cooperation for Tropical Diseases, Kunming 650500, China.
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Xu N, Liu H, Qu C, Wen S, Zou W, Chang C, Wang G. The presence of foci of Rickettsia conorii infection in China. INFECTIOUS MEDICINE 2023; 2:334-337. [PMID: 38205175 PMCID: PMC10774659 DOI: 10.1016/j.imj.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/12/2023] [Accepted: 09/06/2023] [Indexed: 01/12/2024]
Abstract
China is not considered as an endemic area of Rickettsia conorii, so there is no routine clinical way to diagnose this infection. This study aims to determine whether 2 febrile patients who had a tick bite in East China were indeed infected with R. conorii. The citrate synthase gene (gltA) was amplified with universal rickettsial primers by real-time fluorescent PCR from the patients' blood samples. Nested PCR was used to amplify the outer membrane protein A gene (ompA) for positive specimens. PCR products were further identified and analyzed through nucleic acid sequencing. Positive amplification of the gltA and ompA genes was found in both patients. The nucleotide sequences (303 bp) of the ompA gene of the 2 patients had high homology (99%) with the R. conorii Indian tick typhus strain in GenBank. A more than 4-fold increase in IgG against R. conorii provided supportive evidence of SFG Rickettsia infection. And the rapid recovery after doxycycline treatment also supported a rickettsial cause for the disease. Physicians in East China should be aware of human infections with R. conorii. PCR-based diagnostic methods offer a rapid and precise way to diagnose rickettsiosis, improving patient identification and management.
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Affiliation(s)
- Nannan Xu
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Hui Liu
- Institute of Bacterial Disease, Jinan Center for Disease Control and Prevention, Jinan 250021, China
| | - Chunmei Qu
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Sai Wen
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Wenlu Zou
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Caiyun Chang
- Institute for Infectious Disease Control, Jinan Center for Disease Control and Prevention, Jinan 250021, China
| | - Gang Wang
- Department of Infectious Disease, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
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Gafarova MT, Eremeeva ME. History and Current Status of Mediterranean Spotted Fever (MSF) in the Crimean Peninsula and Neighboring Regions along the Black Sea Coast. Pathogens 2023; 12:1161. [PMID: 37764969 PMCID: PMC10536518 DOI: 10.3390/pathogens12091161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Mediterranean spotted fever (MSF) is a tick-borne rickettsiosis caused by Rickettsia conorii subspecies conorii and transmitted to humans by Rhipicephalus sanguineus ticks. The disease was first discovered in Tunisia in 1910 and was subsequently reported from other Mediterranean countries. The first cases of MSF in the former Soviet Union were detected in 1936 on the Crimean Peninsula. This review summarizes the historic information and main features of MSF in that region and contemporary surveillance and control efforts for this rickettsiosis. Current data pertinent to the epidemiology of the disease, circulation of the ticks and distribution of animal hosts are discussed and compared for each of the countries in the Black Sea basin where MSF occurs.
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Affiliation(s)
- Muniver T. Gafarova
- S.I. Georgievsky Medical Academy (Academic Unit), V.I. Vernadsky Crimean Federal University, 295051 Simferopol, Russia
| | - Marina E. Eremeeva
- Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30458, USA
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Munson E, Carroll KC. Update on Accepted Novel Bacterial Isolates Derived from Human Clinical Specimens and Taxonomic Revisions Published in 2020 and 2021. J Clin Microbiol 2023; 61:e0028222. [PMID: 36533910 PMCID: PMC9879126 DOI: 10.1128/jcm.00282-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A number of factors, including microbiome analyses and the increased utilization of whole-genome sequencing in the clinical microbiology laboratory, has contributed to the explosion of novel prokaryotic species discovery, as well as bacterial taxonomy revision. This review attempts to summarize such changes relative to human clinical specimens that occurred in 2020 and 2021, per primary publication in the International Journal of Systematic and Evolutionary Microbiology or acceptance on Validation Lists published by the International Journal of Systematic and Evolutionary Microbiology. Of particular significance among valid and effectively published taxa within the past 2 years were novel Corynebacterium spp., coagulase-positive staphylococci, Pandoraea spp., and members of family Yersiniaceae. Noteworthy taxonomic revisions include those within the Bacillus and Lactobacillus genera, family Staphylococcaceae (including unifications of subspecies designations to species level taxa), Elizabethkingia spp., and former members of Clostridium spp. and Bacteroides spp. Revisions within the Brucella genus have the potential to cause deleterious effects unless the relevance of such changes is properly communicated by microbiologists to stakeholders in clinical practice, infection prevention, and public health.
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Affiliation(s)
- Erik Munson
- Department of Medical Laboratory Science, Marquette University, Milwaukee, Wisconsin, USA
| | - Karen C. Carroll
- Division of Medical Microbiology, Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Gu XL, Wang R, Zhou CM, Cui JT, Li ZM, Jiang ZZ, Li B, Peng QM, Zhang WK, Han HJ, Yu XJ. Natural Mediterranean Spotted Fever Foci, Qingdao, China. Emerg Infect Dis 2022; 28:2524-2527. [PMID: 36417960 PMCID: PMC9707604 DOI: 10.3201/eid2812.221097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
We sequenced DNA from spleens of rodents captured in rural areas of Qingdao, East China, during 2013-2015. We found 1 Apodemus agrarius mouse infected with Rickettsia conorii, indicating a natural Mediterranean spotted fever foci exists in East China and that the range of R. conorii could be expanding.
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