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Hadano Y, Kakuma T. Changing trends in Japanese spotted fever epidemiology in Shimane, Japan: A two-decade retrospective study with emphasis on the COVID-19 pandemic era. J Infect Chemother 2024:S1341-321X(24)00111-9. [PMID: 38574815 DOI: 10.1016/j.jiac.2024.04.003] [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: 12/18/2023] [Revised: 03/03/2024] [Accepted: 04/01/2024] [Indexed: 04/06/2024]
Abstract
INTRODUCTION The objective of this study is to evaluate the epidemiological characteristics of Japanese Spotted Fever (JSF) cases reported through the National Epidemiological Surveillance of Infectious Disease (NESID) system in Shimane Prefecture, Japan, from 2000 to 2022, encompassing the periods before and during the COVID-19 pandemic period. METHODS A retrospective analysis was conducted on JSF cases reported to the NESID system in Shimane Prefecture between 2000 and 2022. Population data were obtained from the Statistical Information of Shimane. Poisson regression analysis was employed to examine the relationship between the annual prevalence rate of JSF and the COVID-19 pandemic. RESULTS A total of 301 JSF cases were analyzed during the study period. Even the pre-COVID-19 pandemic period, a gradual and significant increase in the prevalence rate was observed (prevalence rate = 1.03, 95% CI: 1.01-1.05; p = 0.01), and a rapid increase was noted since 2020 (prevalence rate = 1.57, 95% CI: 1.39-1.78; p < 0.01). The slope during the pre-COVID-19 pandemic period was estimated to have significantly increased (p < 0.01). CONCLUSIONS Our findings suggest that while the prevalence rate of JSF had exhibited a slight increase in the years preceding the COVID-19 pandemic, it demonstrated a more significant increase following the pandemic in Shimane Prefecture. JSF has increased since 2020 and may be linked to COVID-19 pandemic. The COVID-19 pandemic has had a substantial impact on global health, underscoring the importance of investigating the prevalence of specific infectious diseases and other health-related indicators to accurately assess the pandemic's impact.
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Affiliation(s)
- Yoshiro Hadano
- Division of Infection Control and Prevention, Shimane University Hospital, Izumo, Japan.
| | - Tatsuyuki Kakuma
- Biostatistics Center, Kurume University School of Medicine, Kurume, Japan; I'cross Co., Ltd, Japan
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Zhou Y, Wang Q, Shen Y, Shen B, Zhang Y, Wang W, Li X. A Case of Critical Japanese Spotted Fever in Zhejiang, China. Infect Drug Resist 2023; 16:3425-3430. [PMID: 37283937 PMCID: PMC10241177 DOI: 10.2147/idr.s408499] [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: 02/14/2023] [Accepted: 05/18/2023] [Indexed: 06/08/2023] Open
Abstract
Background Japanese spotted fever (JSF) is a rare disease, caused by Rickettsia japonica; no case has been reported in Zhejiang Province, China. Case Presentation An elderly woman presented to the hospital with abdominal pain and fever. Her condition rapidly worsened with severe complications, such as multiple organ failure and central nervous system damage. The presence of R. japonica was quickly detected by metagenomic next-generation sequencing. On the basis of combined clinical manifestations and laboratory results, critical JSF was diagnosed and treated with doxycycline. The patient showed good prognosis. Typical symptoms (eschar and rash) were not observed in the early stage, consequently increasing the difficulty of clinical diagnosis. Conclusion The delay of treatment caused by non-specific symptoms is an important factor affecting the progression of JSF. As an emerging pathogen detection method, mNGS has been successfully applied for disease diagnosis and treatment, and can be an important complement for the diagnosis of this disease.
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Affiliation(s)
- Yani Zhou
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Qi Wang
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Yujuan Shen
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Bin Shen
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Yan Zhang
- Department of Nursing, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Weihong Wang
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
| | - Xiaofeng Li
- Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou, Zhejiang Province, People’s Republic of China
- Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou, Zhejiang Province, People's Republic of China
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Teng Z, Shi Y, Zhao N, Zhang X, Jin X, He J, Xu B, Qin T. Molecular Detection of Tick-Borne Bacterial and Protozoan Pathogens in Haemaphysalis longicornis (Acari: Ixodidae) Ticks from Free-Ranging Domestic Sheep in Hebei Province, China. Pathogens 2023; 12:763. [PMID: 37375453 DOI: 10.3390/pathogens12060763] [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: 04/05/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
Ticks and tick-borne pathogens significantly threaten human and animal health worldwide. Haemaphysalis longicornis is one of the dominant tick species in East Asia, including China. In the present study, 646 Ha. longicornis ticks were collected from free-ranging domestic sheep in the southern region of Hebei Province, China. Tick-borne pathogens of zoonotic and veterinary importance (i.e., Rickettsia, Anaplasma, Ehrlichia, Borrelia, Theileria, and Hepatozoon spp.) were detected in the ticks using PCR assays and sequence analysis. The prevalence rates of these pathogens were 5.1% (33/646), 15.9% (103/646), 1.2% (8/646), 17.0% (110/646), 0.15% (1/646), and 0.15% (1/646), respectively. For Rickettsia spp., R. japonica (n = 13), R. raoultii (n = 6), and Candidatus R. jingxinensis (n = 14) were detected for the first time in the province, while several Anaplasma spp. were also detected in the ticks, including A. bovis (n = 52), A. ovis (n = 31), A. phagocytophilum (n = 10), and A. capra (n = 10). A putative novel Ehrlichia spp. was also found with a prevalence of 1.2% in the area. The present study provides important data for effectively controlling ticks and tick-borne diseases in the Hebei Province region of China.
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Affiliation(s)
- Zhongqiu 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 102206, China
| | - Yan Shi
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang 050021, 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 102206, 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 102206, China
| | - Xiaojing Jin
- 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 102206, China
| | - Jia He
- 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 102206, China
| | - Baohong Xu
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang 050021, 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 102206, China
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Otsuki H, Kondo Y, Tademoto S, Ito D. Phylogenetic Analysis of Spotted Fever Group Rickettsia Gene from Ticks and Human Patients in Tottori Prefecture, Japan. Yonago Acta Med 2023; 66:246-256. [PMID: 37229380 PMCID: PMC10203642 DOI: 10.33160/yam.2023.05.013] [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: 04/06/2023] [Accepted: 04/14/2023] [Indexed: 05/27/2023]
Abstract
Background Japanese spotted fever (JSF) is a tick-borne bacterial febrile disease caused by Rickettsia japonica characterized by fever, rash, and occasional death. The number of patients in Japan and the Tottori Prefecture has been increasing over the past 20 years. Most cases were found in Eastern Tottori; however, the distribution of patients has expanded to the Central and Western regions. Ticks carried by wild animals may be the cause, but the prevalence of R. japonica in ticks has not yet been analyzed. Methods Ticks were collected by flagging-dragging from 16 sites in Tottori, Japan. The ticks were morphologically classified and DNA was extracted. The 17-kDa antigen gene was amplified using nested PCR. PCR amplicons from ticks and JSF patients were sequenced and phylogenetically compared. Results In total, 177 ticks were collected and identified as Haemahysalis, Ixodes, Amblyomma, and Dermcentor. The Spotted Fever Group Rickettsia (SFGR) was detected in Haemahysalis and Amblyomma spp. using PCR, with positivity rates of 36.8% and 33.3%, respectively. DNA sequencing and phylogenetic analysis revealed that positive ticks harbored R. japonica, P. raoultii, and other Rickettsiae species; however, the patient's samples were restricted to R. japonica. Similar to the incidence of JSF, the rate of R. japonica-positive ticks was higher in the Eastern region; however, R. japonica-positive ticks were also detected in the Western region. Conclusion R. japonica sequences had been found in ticks collected in Tottori Prefecture. Ticks harboring R. japonica were found in the Eastern and Western parts of Tottori Prefecture and the sequences were identical to the human cases. Only the R. japonica sequence has been detected in patients with spotted fever symptoms, even though ticks were harboring various SFGRs.
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Affiliation(s)
- Hitoshi Otsuki
- Division of Medical Zoology, Department of Microbiology and Immunology, School of Medicine, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
| | - Yoko Kondo
- Division of Medical Zoology, Department of Microbiology and Immunology, School of Medicine, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
| | - Sayuri Tademoto
- Technical Department, Tottori University, Yonago 683-8503, Japan
| | - Daisuke Ito
- Division of Medical Zoology, Department of Microbiology and Immunology, School of Medicine, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
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Teng Z, Gong P, Wang W, Zhao N, Jin X, Sun X, Zhou H, Lu J, Lin X, Wen B, Kan B, Xu J, Qin T. Clinical Forms of Japanese Spotted Fever from Case-Series Study, Zigui County, Hubei Province, China, 2021. Emerg Infect Dis 2023; 29:202-206. [PMID: 36573633 PMCID: PMC9796216 DOI: 10.3201/eid2901.220639] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We report a case-series study of 5 patients with Japanese spotted fever from the Three Gorges Area in China, including 1 fatal case. Seroprevalence of Rickettsia japonica was ≈21% among the local population. Our report highlights the emerging potential threat to human health of Japanese spotted fever in the area.
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Wada T, Mori H, Kida K, Shindo K. Japanese spotted fever with post-infectious encephalitis. IDCases 2022; 31:e01658. [PMID: 36561293 PMCID: PMC9763843 DOI: 10.1016/j.idcr.2022.e01658] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/30/2022] [Accepted: 12/03/2022] [Indexed: 12/12/2022] Open
Abstract
Japanese spotted fever (JSF) is a rickettsial disease caused by Rickettsia japonica. To the best of our knowledge, there have only been five reported cases of JSF involving the central nervous system. A 74-year-old man was admitted after 1 week of fever and maculopapular rash. JSF was definitively diagnosed by PCR; however, the patient showed mental disturbance and abnormal behavior. After intravenous immunoglobulin, his mental state and behavior improved. The findings of cerebrospinal fluid analysis, electroencephalography, and 99 mTcHM-PAO single photon computed emission tomography suggested post-infectious encephalitis. JSF causes post-infectious encephalitis and early treatment is recommended.
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Affiliation(s)
- Takafumi Wada
- Department of Neurology, Kurashiki Central Hospital, Japan, 1–1-1 Miwa, Kurashiki, Okayama, 710–8602 Japan
| | - Hitoshi Mori
- Department of Neurology, Kurashiki Central Hospital, Japan, 1–1-1 Miwa, Kurashiki, Okayama, 710–8602 Japan
| | - Kouji Kida
- Virology Section, Department of Health Science, Okayama Prefectural Institute for Environmental Science and Public Health, Japan, 739–1 Uchio, Okayama Minami-ku, Okayama, 701–0298 Japan
| | - Katsuro Shindo
- Department of Neurology, Kurashiki Central Hospital, Japan, 1–1-1 Miwa, Kurashiki, Okayama, 710–8602 Japan,Corresponding author.
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Kutsuna S, Ohbe H, Matsui H, Yasunaga H. Delayed Tetracycline Initiation Increases Mortality Risk in Patients With Japanese Spotted Fever: Retrospective Analysis Using a National Inpatient Database. Open Forum Infect Dis 2022; 9:ofac573. [DOI: 10.1093/ofid/ofac573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/28/2022] [Indexed: 11/27/2022] Open
Abstract
Abstract
Background
This study aimed to determine the relationship between time to tetracycline therapy initiation and disease outcome in patients hospitalized with Japanese spotted fever (JSF).
Methods
Patients with JSF enrolled in the Japanese Diagnosis Procedure Combination database from July 2010 to March 2021 were included in the analysis. Patients who received tetracycline on the day of admission were compared with those who received tetracycline later during their hospital stay using inverse probability of treatment weighting. The primary outcome was in-hospital mortality. Secondary outcomes were total hospitalization cost and length of hospital stay.
Results
A total of 1360 patients were included, of whom 1060 (78%) received tetracycline on the day of admission (early tetracycline group), and 300 (22%) received tetracycline later (delayed tetracycline group). Patients in the delayed tetracycline group had significantly higher in-hospital mortality than those in the early tetracycline group (3.9% vs 1.4%; odds ratio, 2.94; 95% CI, 1.34–6.47), significantly higher hospitalization costs, and longer hospital stays than those in the early tetracycline group.
Conclusions
The prognosis of patients with JSF is worse if tetracycline administration is delayed; therefore, physicians should initiate tetracycline on admission if JSF is suspected as a possible diagnosis.
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Affiliation(s)
- Satoshi Kutsuna
- Department of Infection Control, Graduate School of Medicine Faculty of Medicine, Osaka University , Suita City, Osaka , Japan
| | - Hiroyuki Ohbe
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo , Bunkyo-ku, Tokyo , Japan
| | - Hiroki Matsui
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo , Bunkyo-ku, Tokyo , Japan
| | - Hideo Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo , Bunkyo-ku, Tokyo , Japan
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Gao S, Li L, Zhou X, Dai X, Lu L, Chen Y, Han J, Huang X, Xiao Q, He H, Liu Q. Fatal Rickettsia Japonica Infection Complicating Disseminated Intravascular Coagulation in Yichang, China. Infect Drug Resist 2022; 15:6613-6623. [DOI: 10.2147/idr.s383917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/18/2022] [Indexed: 11/12/2022] Open
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Nakada N, Yamamoto K, Tanaka M, Ashizawa H, Yoshida M, Umemura A, Fukuda Y, Katoh S, Sumiyoshi M, Mihara S, Kobayashi T, Ito Y, Ashizawa N, Takeda K, Ide S, Iwanaga N, Takazono T, Tashiro M, Tanaka T, Nakamichi S, Morimoto K, Ariyoshi K, Morita K, Kurihara S, Yanagihara K, Furumoto A, Izumikawa K, Mukae H. Clinical Differentiation of Severe Fever with Thrombocytopenia Syndrome from Japanese Spotted Fever. Viruses 2022; 14:v14081807. [PMID: 36016429 PMCID: PMC9415593 DOI: 10.3390/v14081807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) and Japanese spotted fever (JSF; a spotted fever group rickettsiosis) are tick-borne zoonoses that are becoming a significant public health threat in Japan and East Asia. Strategies for treatment and infection control differ between the two; therefore, initial differential diagnosis is important. We aimed to compare the clinical characteristics of SFTS and JSF based on symptomology, physical examination, laboratory data, and radiography findings at admission. This retrospective study included patients with SFTS and JSF treated at five hospitals in Nagasaki Prefecture, western Japan, between 2013 and 2020. Data from 23 patients with SFTS and 38 patients with JSF were examined for differentiating factors and were divided by 7:3 into a training cohort and a validation cohort. Decision tree analysis revealed leukopenia (white blood cell [WBC] < 4000/μL) and altered mental status as the best differentiating factors (AUC 1.000) with 100% sensitivity and 100% specificity. Using only physical examination factors, absence of skin rash and altered mental status resulted in the best differentiating factors with AUC 0.871, 71.4% sensitivity, and 90.0% specificity. When treating patients with suspected tick-borne infection, WBC < 4000/µL, absence of skin rash, and altered mental status are very useful to differentiate SFTS from JSF.
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Affiliation(s)
- Nana Nakada
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
- Health Center, Nagasaki University, Nagasaki 852-8521, Japan
| | - Kazuko Yamamoto
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
- Correspondence:
| | - Moe Tanaka
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Hiroki Ashizawa
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Masataka Yoshida
- Department of Respiratory Medicine, Sasebo City General Hospital, Sasebo 857-8511, Japan
| | - Asuka Umemura
- Department of Respiratory Medicine, Sasebo City General Hospital, Sasebo 857-8511, Japan
| | - Yuichi Fukuda
- Department of Respiratory Medicine, Sasebo City General Hospital, Sasebo 857-8511, Japan
| | - Shungo Katoh
- Department of General Internal Medicine, Nagasaki Rosai Hospital, Sasebo 857-0134, Japan
| | - Makoto Sumiyoshi
- Department of Respiratory Medicine, Isahaya General Hospital, Isahaya 854-8501, Japan
| | - Satoshi Mihara
- Department of Respiratory Medicine, Isahaya General Hospital, Isahaya 854-8501, Japan
| | - Tsutomu Kobayashi
- Department of Respiratory Medicine, Sasebo Chuo Hospital, Sasebo 857-1195, Japan
| | - Yuya Ito
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Nobuyuki Ashizawa
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
- Department of Infection Control and Education Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Kazuaki Takeda
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Shotaro Ide
- Department of Respiratory Medicine, Sasebo Chuo Hospital, Sasebo 857-1195, Japan
- Infectious Disease Experts Training Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Naoki Iwanaga
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Takahiro Takazono
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
- Department of Infection Control and Education Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Masato Tashiro
- Department of Infection Control and Education Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Takeshi Tanaka
- Department of Infection Control and Education Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Seiko Nakamichi
- Health Center, Nagasaki University, Nagasaki 852-8521, Japan
| | - Konosuke Morimoto
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan
| | - Koya Ariyoshi
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan
| | - Shintaro Kurihara
- Department of Medical Safety, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Akitsugu Furumoto
- Department of Respiratory Medicine, Isahaya General Hospital, Isahaya 854-8501, Japan
- Infectious Disease Experts Training Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Koichi Izumikawa
- Department of Infection Control and Education Center, Nagasaki University Hospital, Nagasaki 852-8102, Japan
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University Hospital, Nagasaki 852-8102, Japan
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Kutsuna S, Ohbe H, Matsui H, Yasunaga H. Effectiveness of fluoroquinolone antimicrobials in addition to tetracyclines for Japanese spotted fever: A retrospective analysis using a national inpatient database. Int J Infect Dis 2022; 123:70-75. [PMID: 35987471 DOI: 10.1016/j.ijid.2022.08.006] [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: 05/30/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES This study aim to evaluate the effectiveness of fluoroquinolone (FQ) antimicrobial therapy in combination with tetracyclines (TCs) in patients with Japanese spotted fever (JSF) using a nationwide inpatient database in Japan. METHODS We identified hospitalized patients diagnosed with JSF who were enrolled in the Japanese Diagnosis Procedure Combination inpatient database from July 2010 to March 2021. Patients who received FQ plus TC on the day of admission were compared with patients who received TC alone on the day of admission, using inverse probability of treatment weighting. The primary outcome was in-hospital mortality. Secondary outcomes were in-hospital complications, total hospitalization costs, and length of hospital stay. RESULTS We identified 1060 eligible patients. Of these, 434 (41%) received FQ plus TC on the day of admission and 626 (59%) received TC alone on the day of admission. Inverse probability of treatment weighting showed no statistically significant differences between the groups in in-hospital mortality, in-hospital complications, total hospitalization costs, and length of hospital stay. CONCLUSION This study did not show any significantly improved effectiveness using FQ antimicrobials in combination with TCs for treating JSF. Clinicians may need to be cautious in administering FQ and TC antimicrobials concomitantly in routine practice.
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Affiliation(s)
- Satoshi Kutsuna
- Department of Infection Control, Department of Infection Control, Graduate School of Medicine Faculty of Medicine, Osaka University, 2-2, Yamadaoka, Suita-City, Osaka, Japan.
| | - Hiroyuki Ohbe
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 1130033, Japan.
| | - Hiroki Matsui
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 1130033, Japan
| | - Hideo Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 1130033, Japan
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Toxoplasma gondii and Rickettsia spp. in ticks collected from migratory birds in the Republic of Korea. Sci Rep 2022; 12:12672. [PMID: 35879387 PMCID: PMC9314388 DOI: 10.1038/s41598-022-16785-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 07/15/2022] [Indexed: 11/21/2022] Open
Abstract
Migratory birds disperse ticks and associated tick-borne pathogens along their migratory routes. Four selected pathogens of medical importance (Coxiella burnetii, Rickettsia spp., Francisella tularensis, and Toxoplasma gondii) were targeted for detection in 804 ticks (365 pools) collected from migratory birds at Hong and Heuksan Islands in the Republic of Korea (ROK) from 2010 to 2011 and 2016. Toxoplasma gondii and Rickettsia spp., were detected in 1/365 (0.27%) and 34/365 (9.32%) pools of ticks, respectively. T. gondii and five rickettsial species were recorded in ticks collected from migratory birds for the first time in ROK. The five rickettsial species (R. monacensis, Candidatus Rickettsia longicornii, R. japonica, R. raoultii, and R. tamurae) were identified using sequence and phylogenetic analysis using ompA and gltA gene fragments. Rickettsia spp. are important pathogens that cause rickettsiosis in humans, with cases recorded in the ROK. These results provide important evidence for the potential role of migratory birds in the introduction and dispersal of T. gondii and Rickettsia spp. along their migratory routes and raise awareness of potential transmission of zoonotic tick-borne pathogens associated with migratory birds in the ROK.
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Truong AT, Yun BR, Yoo MS, Lim J, Min S, Yoon SS, Yun YM, Kim JT, Cho YS. Utility of ultra-rapid real-time PCR for detection and prevalence of Rickettsia spp. in ticks. BMC Vet Res 2022; 18:199. [PMID: 35624477 PMCID: PMC9137179 DOI: 10.1186/s12917-022-03311-7] [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: 02/04/2022] [Accepted: 05/20/2022] [Indexed: 11/30/2022] Open
Abstract
Background Rickettsia spp. are important tick-borne pathogens that cause various human and animal diseases worldwide. A tool for rapid and accurate detection of the pathogens from its vectors is necessary for prevention of Rickettsioses propagation in humans and animals, which are infested by ticks. Therefore, this study was conducted to evaluate a molecular tool, ultra-rapid real-time PCR (UR-qPCR), for rapid and accurate detection of Rickettsia spp. from 5644 ticks in 408 pools collected from livestock and their surrounding environments in Gangwon and Jeju province in South Korea. Results The UR-qPCR of Rickettsia DNA showed a limit of detection of 2.72 × 101 copies of Rickettsia DNA and no cross reaction with other tick-borne pathogens, namely Anaplasma phagocytophilum, Ehrlichia chaffeensis, E. canis, Toxoplasma gondii, and Borrelia burgdorferi. In addition, the PCR assay also showed possibility of various Rickettsia species detection including R. monacensis, “Candidatus R. longicornii”, R. japonica, R. roultii, and R. tamurae. The collected ticks were identified with major species belonged to Haemaphysalis longicornis (81.62%), followed by H. flava (15.19%), and Ixodes nipponensis (3.19%). Rickettsia detection from tick samples using the UR-qPCR showed that the minimum infection rate (MIR) of Rickettsia in collected ticks was 1.24‰ and that all positive pools contained H. longicornis, equal to the MIR of 1.39‰ of this species. Additionally, MIR of Rickettsia spp. detected in ticks collected in Gangwon and Jeju was 1.53‰ and 0.84‰, respectively. Furthermore, the sequencing results of the 17 kDa protein antigen gene and ompA gene showed that Rickettsia spp. sequences from all pools were related to “Candidatus R. longicornii” and “Candidatus R. jingxinensis”. Conclusions The UR-qPCR system was demonstrated to be useful tool for accurate and rapid detection of Rickettsia from its vector, ixodid ticks, within 20 min. The data on Rickettsia spp. in ticks detected in this study provide useful information on the distribution of Rickettsia in previously unstudied Korean provinces, which are important for the prevention and control of the spread of rickettsioses in both animals and humans in the country.
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Affiliation(s)
- A-Tai Truong
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea.,Faculty of Biotechnology, Thai Nguyen University of Sciences, Thai Nguyen, Vietnam
| | - Bo-Ram Yun
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Mi-Sun Yoo
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Jiyeon Lim
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Subin Min
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Soon-Seek Yoon
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Young-Min Yun
- Department of Veterinary Internal Medicine, Wildlife Rescue Center, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
| | - Jong-Taek Kim
- Wildlife Rescue Center, College of Veterinary Medicine, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Yun Sang Cho
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea.
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He YC, Li JX, Sun YL, Kang M, He HX, Guo YH, Ma P, Wei YP, Li RS, Chen WK, Chen ZH, Li J, Qi TS, Yang JF, Zhang QX, Wang Y, Cai JS, Zhao QB, Hu GW, Chen JY, Li Y. Spotted Fever Group Rickettsia Infecting Ticks (Acari: Ixodidae), Yak (Bos grunniens), and Tibetan Sheep (Ovis aries) in the Qinghai–Tibetan Plateau Area, China. Front Vet Sci 2022; 8:779387. [PMID: 35211533 PMCID: PMC8861378 DOI: 10.3389/fvets.2021.779387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022] Open
Abstract
The Qinghai–Tibet Plateau Area (QTPA) has a complex natural ecosystem, causing a greatly increased risk of spreading various tick-borne diseases including rickettsial infections, which are regarded as one of the oldest known vector-borne zoonoses. However, the information of one of its pathogen, spotted fever group Rickettsia (SFG Rickettsia), is limited in tick vectors and animals in this area. Therefore, this study focused on the investigation of SFG Rickettsia in tick vectors, yaks (Bos grunniens), and Tibetan sheep (Ovis aries) in the QTPA. A total of 1,000 samples were collected from nine sampling sites, including 425 of yaks, 309 of Tibetan sheep, 266 of ticks. By morphological examination, PCR, and sequencing, we confirmed the species of all collected ticks. All tick samples, all yak and Tibetan sheep blood samples were detected based on SFG Rickettsia ompA and sca4 gene. The results showed that all tick samples were identified to be Haemaphysalis qinghaiensis, and the positive rates of SFG Rickettsia were 5.9% (25/425), 0.3% (1/309), and 54.1% (144/266) in yaks, Tibetan sheep, and ticks, respectively. All positive samples were sequenced, and BLASTn analysis of the ompA gene sequences of SFG Rickettsia showed that all positive samples from animals and ticks had 99.04–100% identity with yak and horse isolates from Qinghai Province, China. BLASTn analysis of the sca4 gene sequences of SFG Rickettsia showed that all positive samples had 97.60–98.72% identity with tick isolates from Ukraine. In addition, the phylogenetic analysis showed that all the SFG Rickettsia ompA and sca4 sequences obtained from this study belong to the same clade as Rickettsia raoultii isolated from livestock and ticks from China and other countries. Molecularly, this study detected and characterized SFG Rickettsia both in the tick vectors and animals, suggesting that the relationship between SFG Rickettsia, tick species and animal hosts should be explored to understand their interrelationships, which provide a theoretical basis for preventing control of this pathogen.
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Affiliation(s)
- Yong-Cai He
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Ji-Xu Li
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Ya-Li Sun
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Ming Kang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Hong-Xuan He
- National Research Center for Wildlife-Born Diseases, University of Chinese Academy of Sciences, Beijing, China
| | - Yun-Hai Guo
- National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention, Shanghai, China
| | - Ping Ma
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Yao-Ping Wei
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Rui-Shan Li
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Wang-Kai Chen
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Zhi-Hong Chen
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Jing Li
- Qinghai Provincial Center for Animal Disease Control and Prevention, Xining, China
| | - Tong-Sheng Qi
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Jin-Fang Yang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Qing-Xun Zhang
- National Research Center for Wildlife-Born Diseases, University of Chinese Academy of Sciences, Beijing, China
| | - Ye Wang
- National Research Center for Wildlife-Born Diseases, University of Chinese Academy of Sciences, Beijing, China
| | - Jin-Shan Cai
- Qinghai Provincial Center for Animal Disease Control and Prevention, Xining, China
| | - Quan-Bang Zhao
- Qinghai Provincial Center for Animal Disease Control and Prevention, Xining, China
| | - Guang-Wei Hu
- Qinghai Provincial Center for Animal Disease Control and Prevention, Xining, China
| | - Ji-Yong Chen
- Animal Disease Prevention and Control Center of Yushu, Yushu, China
| | - Ying Li
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
- *Correspondence: Ying Li
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Sakabe S, Tanaka H, Nakanishi Y, Toyoshima H. The clinical course of 239 cases of Japanese spotted fever in Ise Red Cross Hospital, 2006-2019. J Infect Chemother 2021; 28:211-216. [PMID: 34711506 DOI: 10.1016/j.jiac.2021.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 10/12/2021] [Accepted: 10/17/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Although the mortality rates associated with Japanese spotted fever (JSF) are unknown, advances in testing technology have led to an increase in JSF-induced mortality reported in clinical practice. Up-to-date clinical information is essential for accurate diagnosis and prompt treatment of JSF. METHODS This retrospective descriptive study included patients with JSF who were treated at the Ise Red Cross Hospital between 2006 and 2019. Diagnostic criteria included positive results of molecular-based tests during the acute phase and/or increased serum-specific antibody titers. This study was performed based on the clinical findings, clinical course, treatment, and prognosis in confirmed cases of JSF. RESULTS We investigated 239 patients with a confirmed diagnosis of JSF (48.1% men, mean age 69.2 years). Notably, 237 patients received tetracycline antibiotics, and eight patients died (one patient was misdiagnosed and died without adequate treatment). Four of the remaining patients had a multi-organ failure at the time of admission. However, among the 155 consecutive patients who received effective antibiotic therapy after 2012, we observed two deaths; one patient died of hemorrhage secondary to non-steroidal anti-inflammatory drug-induced duodenal ulcer. CONCLUSIONS Our study showed a case fatality rate of 3.3%, which indicates that JSF is a severe illness. Although a few cases of the fulminant disease are reported, early initiation of therapy was shown to improve JSF-induced mortality by approximately 1%. Prompt initiation of antibiotic therapy (even in the absence of genetic test results) is warranted in cases of suspected JSF.
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Affiliation(s)
| | - Hiroyuki Tanaka
- Department of Infectious Disease, Ise Red Cross Hospital, Japan
| | - Yuki Nakanishi
- Department of Infectious Disease, Ise Red Cross Hospital, Japan
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15
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Kim JY, Yi MH, Mahdi AAS, Yong TS. iSeq 100 for metagenomic pathogen screening in ticks. Parasit Vectors 2021; 14:346. [PMID: 34187542 PMCID: PMC8244152 DOI: 10.1186/s13071-021-04852-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/16/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Ticks are blood-sucking ectoparasites that play a pivotal role in the transmission of various pathogens to humans and animals. In Korea, Haemaphysalis longicornis is the predominant tick species and is recognized as the vector of pathogens causing various diseases such as babesiosis, borreliosis, rickettsiosis, and severe fever with thrombocytopenia syndrome. METHODS In this study, the targeted high-throughput sequencing of the 16S rRNA V4 region was performed using the state-of-the-art sequencing instrument, iSeq 100, to screen bacterial pathogens in H. longicornis, and the findings were compared with those using conventional PCR with specific primers. Microbiome analyses were performed with EzBioCloud, a commercially available ChunLab bioinformatics cloud platform. ANOVA-Like Differential Expression tool (ALDEx2) was used for differential abundance analysis. RESULTS Rickettsia spp. were detected in 16 out of 37 samples using iSeq 100, and this was confirmed using a PCR assay. In the phylogenetic analysis using gltA and ompA sequences of the detected Rickettsia, the highest sequence similarity was found with 'Candidatus Rickettsia jingxinensis' isolate Xian-Hl-79, 'Ca. R. jingxinensis' isolate F18, and 'Ca. R. longicornii' isolate ROK-HL727. In the microbiome study, Coxiella AB001519, a known tick symbiont, was detected in all 37 tick samples. Actinomycetospora chiangmaiensis was more abundant in Rickettsia-positive samples than in Rickettsia-negative samples. CONCLUSIONS In this study, iSeq 100 was used to investigate the microbiome of H. longicornis, and the potentially pathogenic Rickettsia strain was detected in 16 out of 37 ticks. We believe that this approach will aid in large-scale pathogen screening of arthropods to be used in vector-borne disease control programs.
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Affiliation(s)
- Ju Yeong Kim
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, South Korea
| | - Myung-Hee Yi
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, South Korea
| | - Alghurabi Areej Sabri Mahdi
- Department of Global Health Security, Graduate School of Public Health, Yonsei University, Seoul, 03722, South Korea
| | - Tai-Soon Yong
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, South Korea.
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16
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Kim HC, Jiang J, Hang J, Kim SY, Yun SM, Park CU, Kim M, Chong ST, Farris CM, Richards AL, Klein TA. Detection of Rickettsia lusitaniae Among Ornithodoros sawaii Soft Ticks Collected From Japanese Murrelet Seabird Nest Material From Gugul Island, Republic of Korea. JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:1376-1383. [PMID: 33615347 DOI: 10.1093/jme/tjab005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 06/12/2023]
Abstract
In a follow-up to the investigations of soft ticks identified from seabird nest soil and litter collected from coastal islands of the Republic of Korea (ROK), Ornithodoros sawaii and Ornithodoros capensis were assessed for the presence and identification of rickettsiae. Ticks collected from samples of 50-100 g of nest litter and soil from seabird nests were identified individually by morphological techniques, and species confirmed by sequencing of the mt-rrs gene. Subsequently, tick DNA preparations were screened for the presence of rickettsiae using a genus-specific nested PCR (nPCR) assay targeting the 17 kDa antigen gene. The amplicons from the 17 kDa assay and two additional nPCR assays targeting the gltA and ompB gene fragments were sequenced and used to identify the rickettsiae. A total of 134 soft ticks belonging to two species, O. sawaii Kitaoka & Suzuki 1973 (n = 125) and O. capensis Neumann 1901 (n = 9), were collected. Rickettsia lusitaniae DNA was detected and identified among O. sawaii ticks (n = 11, 8.8%) collected from nest litter and soil of the Japanese murrelet (Synthliboramphus wumizusume Temminck 1836) at Gugul Island along the western coastal area of the ROK. This study confirmed for the first time the presence of R. lusitaniae associated with O. sawaii collected from migratory seabird nests in the ROK.
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Affiliation(s)
- Heung-Chul Kim
- Force Health Protection & Preventive Medicine, US Army Medical Activity-Korea, Unit #15281, APO AP, USA
| | - Ju Jiang
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| | - Jun Hang
- Viral Diseases Branch, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD, USA
| | - Su Yeon Kim
- Pathogen Resource Management TF, National Research Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju-si, Chungbuk Province, Republic of Korea
| | - Seok-Min Yun
- Division of Arboviruses, National Institute of Health, Korea Centers for Diseases Control and Prevention, Cheongju-si, Chungbuk Province, Republic of Korea
| | - Chang-Uk Park
- Migratory Birds Research Center, Korea National Park Research Institute, Korea National Park Service, Shinan-gun, Jeonnam Province, Republic of Korea
| | - Miran Kim
- Migratory Birds Research Center, Korea National Park Research Institute, Korea National Park Service, Shinan-gun, Jeonnam Province, Republic of Korea
| | - Sung-Tae Chong
- Force Health Protection & Preventive Medicine, US Army Medical Activity-Korea, Unit #15281, APO AP, USA
| | - Christina M Farris
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| | - Allen L Richards
- Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Terry A Klein
- Force Health Protection & Preventive Medicine, US Army Medical Activity-Korea, Unit #15281, APO AP, USA
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17
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Tick-borne rickettsiae in Midwestern region of Republic of Korea. Acta Trop 2021; 215:105794. [PMID: 33310079 DOI: 10.1016/j.actatropica.2020.105794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 11/23/2022]
Abstract
To identify spotted fever group (SFG) rickettsiae among ticks collected by dragging at eight sites in three provinces of the midwestern region of the Republic of Korea (ROK), genus- and species-specific quantitative real-time PCR (qPCR) assays and sequencing were performed. DNA was extracted from a total of 2,312 ticks that were assayed individually (n=140) or in pools (n=444), resulting in a total of 584 individual and pooled tick samples. The 584 tick samples were screened with the genus-specific qPCR assay (Rick17b) and produced 265 (45.38%) positive reactions [individual (n=64) and pooled (n=101) samples]. Of these genus-specific positive samples, 57 (21.51%) were identified as Candidatus Rickettsia longicornii and 48 (18.11%) were identified as R. monacensis by species-specific qPCR assays. Subsequently, nested PCR (nPCR) was performed with 120 samples, which tested positive samples for genus-specific, but not species-specific, qPCR assays. The sequences of ompA and ompB genes showed how many close relatedness to Ca. R. longicornii and Ca. R. jingxinensis isolate Xian Hl-79, uncultured Rickettsia sp. Y27-1, Ca. R. tasmanensis strain T152, R. endosymbiont of H. longicornis tick 47, and R. koreansis strain CNH17-7. In conclusion, we successfully detected specific rickettsial agents using qPCR and a sequence-based analysis approach that demonstrated the prevalence of various tick-borne Rickettsia spp. in midwestern ROK.
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18
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Kinoshita H, Arima Y, Shigematsu M, Sunagawa T, Saijo M, Oishi K, Ando S. Descriptive epidemiology of rickettsial infections in Japan: Scrub typhus and Japanese spotted fever, 2007-2016. Int J Infect Dis 2021; 105:560-566. [PMID: 33610785 DOI: 10.1016/j.ijid.2021.02.069] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE This study aimed to describe the epidemiological and clinical characteristics of endemics of two rickettsial diseases, scrub typhus (ST) and Japanese spotted fever (JSF), in Japan. METHODS We conducted a retrospective, descriptive epidemiological assessment of cases notified via national surveillance from 2007-2016. RESULTS Over the 10-year period, 4185 ST and 1765 JSF cases were notified; of these, 20 (0.48%) cases of ST and 16 (0.91%) cases of JSF were fatal at the time of reporting. The elderly had higher notification rates and fatalities. While the annual number of ST notifications was stable and cases were reported from a broad geographic range, the number of JSF reports increased three-fold, expanding from the southwest to the east. The seasonality of ST varied by region and was more common during spring/summer in the north and autumn/winter in the south; 78% of cases occurred during autumn/winter, mainly in the southern region. Most of the fatal ST cases occurred in the spring/summer and occurred in the northern region. CONCLUSION Our analysis identified seasonal and regional variations in the distribution of rickettsiosis. These variations were most likely to be related to the ecology of the vectors and etiological agents. Knowing the recent epidemiological and clinical features of ST and JSF can support clinical diagnosis and guide preventative activities against these vector-borne diseases.
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Affiliation(s)
| | - Yuzo Arima
- National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | | | - Shuji Ando
- National Institute of Infectious Diseases, Tokyo, Japan.
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Kawaguchi T, Umekita K, Yamanaka A, Hara S, Yamaguchi T, Inoue E, Okayama A. Impact of C-Reactive Protein Levels on Differentiating of Severe Fever With Thrombocytopenia Syndrome From Japanese Spotted Fever. Open Forum Infect Dis 2020; 7:ofaa473. [PMID: 33204759 PMCID: PMC7651123 DOI: 10.1093/ofid/ofaa473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/30/2020] [Indexed: 11/16/2022] Open
Abstract
Background Severe fever with thrombocytopenia syndrome (SFTS) is an emerging viral hemorrhagic fever in China, Korea, and Japan. Japanese spotted fever (JSF), which belongs to spotted fever group rickettsioses, is also endemic to Western Japan. Patients with SFTS and those with JSF display many of the same clinical manifestations. Sudden fever, rash, tick bite, and neurological and gastrointestinal symptoms may be seen in both infections, but the frequency and severity of each disease have not been compared and studied. Because laboratory confirmation of pathogens takes time, it is important to predict diagnosis of SFTS vs JSF based on the features of the clinical characteristics at the initial presentation, particularly in primary care settings. Methods We conducted a case series review at 4 medical facilities in Miyazaki, Japan. Based on the medical records, clinical and laboratory characteristics were compared between patients with SFTS and those with JSF. Results Eighty-one patients were enrolled in this study, including 41 with SFTS and 40 with JSF. The absence of rash (P < .001), leukopenia (P < .001), and normal C-reactive protein (CRP) levels (P < .001) were the variables distinguishing SFTS from JSF. Normal CRP levels (≤1.0 mg/dL) had a 95% sensitivity (84%–99%) and 97% specificity (87%–100%) for SFTS, with a positive likelihood ratio of 37.1 (5.35–257). Conclusions Normal serum CRP levels were shown to differentiate SFTS from JSF with a very high probability.
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Affiliation(s)
- Takeshi Kawaguchi
- Department of Rheumatology, Infectious Diseases, and Laboratory Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Kunihiko Umekita
- Department of Rheumatology, Infectious Diseases, and Laboratory Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Atsushi Yamanaka
- Department of Internal Medicine, Miyazaki Prefectural Miyazaki Hospital, Miyazaki, Japan
| | - Seiichiro Hara
- Department of Internal Medicine, Miyazaki Prefectural Nichinan Hospital, Miyazaki, Japan
| | - Tetsuro Yamaguchi
- Department of Internal Medicine, Miyazaki Prefectural Nobeoka Hospital, Miyazaki, Japan
| | - Eisuke Inoue
- Showa University Research Administration Center, Showa University, Tokyo, Japan
| | - Akihiko Okayama
- Department of Rheumatology, Infectious Diseases, and Laboratory Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Nakanishi A, Harada K, Ota S, Miyasaka E. Japanese spotted fever. QJM 2020; 113:683. [PMID: 31851356 DOI: 10.1093/qjmed/hcz317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Nakanishi
- Department of General Medicine, Fujii Hospital, 323 tomo-cho tomo, Fukuyama, Hiroshima 720-0201, Japan
| | - K Harada
- Department of General Medicine, Fujii Hospital, 323 tomo-cho tomo, Fukuyama, Hiroshima 720-0201, Japan and Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - S Ota
- Department of General Medicine, Fujii Hospital, 323 tomo-cho tomo, Fukuyama, Hiroshima 720-0201, Japan
| | - E Miyasaka
- Department of General Medicine, Fujii Hospital, 323 tomo-cho tomo, Fukuyama, Hiroshima 720-0201, Japan
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21
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Hatano Y, Kashima S, Kaihara M, Takase K, Hatakeyama S, Reingold AL, Matsumoto M. Predictive variables for hemodialysis and death in Japanese spotted fever, and the association between distance from rivers and incidence. Ticks Tick Borne Dis 2020; 12:101544. [PMID: 33011438 DOI: 10.1016/j.ttbdis.2020.101544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 07/06/2020] [Accepted: 08/19/2020] [Indexed: 10/23/2022]
Abstract
The number of patients with Japanese spotted fever (JSF) and its case fatality rate have been increasing in Japan and other East Asian countries. Better clinical and laboratory biomarkers are needed to avoid misdiagnosing JSF and to predict severe cases. In addition to determining these predictors, we aimed to examine the association between the incidence of JSF and the distance from rivers, in Hiroshima Prefecture, one of the most JSF prevalent areas in Japan. Patients diagnosed with JSF from 2009 to 2017 in two hospitals in Onomichi City in Hiroshima Prefecture were studied, and their clinical characteristics and laboratory data were collected retrospectively from medical charts. A random forest was used to identify predictors of severe JSF leading to hemodialysis or death. A multivariable negative binomial regression model was utilized to analyze the association between the cumulative incidence in each postal code area and the distance from the residential postal code area to the closest river. Out of 82 patients with JSF (mean age at diagnosis, 74.1 ± 10.6 years; 34 (41.5 %) men), 6 cases were regarded as severe (among them 5 hemodialysis patients and 3 deaths). Twenty-eight (34.1 %) patients were misdiagnosed at least once at the initial hospital visit. Laboratory examination showed 34.5 % had atypical lymphocytes, 73.8 % had no eosinophils, 75.6 % had an elevated aspartate aminotransferase (AST) level, and 69.5 % had hyponatremia. Among cases without urine leucocytes, 63.3 % had proteinuria and 63.3 % had hematuria. Low serum total protein was the strongest predictor of severe JSF, followed by high blood urea nitrogen (BUN) and low albumin. Geospatial analysis showed a significant negative association between the cumulative incidence of JSF cases and the distance from rivers in an adjusted model: the cumulative incidence decreased by 0.51 times (95 % CI: 0.30 to 0.86) for every kilometer of distance from the residential postal code area to the closest river. Some laboratory data may be useful in averting misdiagnosis of JSF and in predicting severe cases. Additional studies should be done in order to clarify the mechanism and association of the incidence of JSF with the distance from the nearest river.
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Affiliation(s)
- Yu Hatano
- Department of Family Medicine and Community Health, Duke University, Durham, NC, USA.
| | - Saori Kashima
- Environmental Health Sciences Laboratory, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8529, Japan.
| | - Masanobu Kaihara
- Department of Internal Medicine, Onomichi Municipal Hospital, 3-1170-177, Shintakayama, Onomichi-shi, Hiroshima, 722-0055, Japan.
| | - Kenichi Takase
- Department of Clinical Laboratory, Mitsugi General Hospital, 124 Ichi, Mitsugi, Onomichi-shi, Hiroshima, 722-0393, Japan.
| | - Shuji Hatakeyama
- Division of General Internal Medicine/Infectious Diseases, Jichi Medical University Hospital, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi, 329-0498, Japan.
| | - Arthur L Reingold
- Division of Epidemiology, University of California, Berkeley, 2121 Berkeley Way, #5302, Berkeley, CA, 94720-7360, United States.
| | - Masatoshi Matsumoto
- Department of Community-Based Medical System, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
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22
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Park JW, Lee SH, Lee GS, Seo JJ, Chung JK. Epidemiological Characteristics of Field Tick-Borne Pathogens in Gwang-ju Metropolitan Area, South Korea, from 2014 to 2018. Osong Public Health Res Perspect 2020; 11:177-184. [PMID: 32864308 PMCID: PMC7442441 DOI: 10.24171/j.phrp.2020.11.4.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objectives The importance of tick-borne diseases is increasing because of climate change, with a lack of long-term studies on tick-borne pathogens in South Korea. To understand the epidemiological characteristics of tick-borne diseases, the monthly distribution of field ticks throughout the year was studied in South Korea between May 2014 and April 2018 in a cross sectional study. Methods The presence of various tick-borne pathogens (Rickettsia species, Borrelia species, Anaplasma phagocytophilum) was confirmed by using polymerase chain reaction, to provide information for a prevention strategy against tick-borne pathogenic infections, through increased understanding of the relationship between seasonal variation and risk of infection with Rickettsia species. This was performed using logistic regression analysis (SPSS 20, IBM, USA) of the data obtained from the study. Results During the study period there were 11,717 ticks collected and 4 species identified. Haemapysalis longicornis was the most common species (n = 10,904, 93.1%), followed by Haemapysalis flava (n = 656, 5.6%), Ixodes nipponensis (n = 151, 1.3%), and Amblyomma testudinarium (n = 6, 0.05%) The results of this cross-sectional study showed that Haemapysalis flava carried a higher risk of transmission of Rickettsia species than other tick species (p < 0.05). Conclusion In conclusion, due attention should be paid to preventing tick-borne infections in humans whilst engaged in outdoor activities in Spring and Autumn, particularly in places where there is a high prevalence of ticks.
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Affiliation(s)
- Jung Wook Park
- Division of Infectious Disease Investigation, Health and Environment Research Institute of Gwangju, Gwangju, Korea
| | - Seung Hun Lee
- Division of Bacterial Disease Research, Center for Infectious Disease Research, Korea National Institute of Health, Cheongju, Korea.,Yeosu National Quarantine Station, Korea Centers for Disease Control & Prevention, Yeosu, Korea
| | - Gi Seong Lee
- Division of Infectious Disease Investigation, Health and Environment Research Institute of Gwangju, Gwangju, Korea
| | - Jin Jong Seo
- Division of Infectious Disease Investigation, Health and Environment Research Institute of Gwangju, Gwangju, Korea
| | - Jae Keun Chung
- Division of Infectious Disease Investigation, Health and Environment Research Institute of Gwangju, Gwangju, Korea
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23
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Kim YS, Kim J, Choi YJ, Park HJ, Jang WJ. Molecular genetic analysis and clinical characterization of Rickettsia species isolated from the Republic of Korea in 2017. Transbound Emerg Dis 2020; 67:1447-1452. [PMID: 32090496 DOI: 10.1111/tbed.13525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/09/2020] [Accepted: 02/11/2020] [Indexed: 10/24/2022]
Abstract
Rickettsia sp. CNH17-7 was isolated from patients' blood and identified by gene analysis as a species distinct from Rickettsia japonica. In addition, similar rickettsial infection was confirmed in two species (Haemaphysalis longicornis and Ixodes nipponensis) of ticks and rodents in northeastern and southwestern provinces, Republic of Korea. Subsequently, the analysis of 16S rRNA, ompA, ompB and sca4 genes of isolate CNH17-7 revealed 100%, 99.68%, 99.57% and 99.44% sequence similarity with Rickettsia sp. HlR/D91 and Candidatus R. longicornii ROK-HL727. In this study, we report the isolation of a new Rickettsia sp. CNH17-7 and infection of different types of ticks with the same rickettsial agents.
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Affiliation(s)
- Yeon-Sook Kim
- Department of Infectious Diseases, Chungnam National University Hospital, Daejeon, Korea
| | - Jeoungyeon Kim
- Department of Microbiology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
| | - Yeon-Joo Choi
- Department of Microbiology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
| | - Hye-Jin Park
- Department of Microbiology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
| | - Won-Jong Jang
- Department of Microbiology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
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24
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Abstract
Japanese spotted fever (JSF) is an uncommon but potentially fatal infection transmitted by tick bites. We herein report a fulminant case of JSF infection that occurred in an immunocompetent adult that was complicated by disseminated intravascular coagulation and hemophagocytic lymphohistiocytosis (HLH). We discuss the difficulty in making the diagnosis and identifying the complication of HLH in our patient. HLH is a rare complication of rickettsiosis, and this is the first reported case in English of JSF complicated by HLH in an immunocompetent adult. Secondary HLH caused by rickettsiosis requires a different treatment from primary HLH. Rickettsiosis must therefore be considered in patients with HLH.
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Affiliation(s)
- Masahiro Kaneko
- Department of General Internal Medicine, Akashi Medical Center, Japan
| | - Naoto Ishimaru
- Department of General Internal Medicine, Akashi Medical Center, Japan
| | - Takahiro Nakajima
- Department of General Internal Medicine, Akashi Medical Center, Japan
| | - Yohei Kanzawa
- Department of General Internal Medicine, Akashi Medical Center, Japan
| | - Hiroyuki Seto
- Department of General Internal Medicine, Akashi Medical Center, Japan
| | - Saori Kinami
- Department of General Internal Medicine, Akashi Medical Center, Japan
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25
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Li H, Zhang PH, Du J, Yang ZD, Cui N, Xing B, Zhang XA, Liu W. Rickettsia japonica Infections in Humans, Xinyang, China, 2014-2017. Emerg Infect Dis 2020; 25:1719-1722. [PMID: 31441748 PMCID: PMC6711240 DOI: 10.3201/eid2509.171421] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
During 2014–2017, we screened for Rickettsia japonica infection in Xinyang, China, and identified 20 cases. The major clinical manifestations of monoinfection were fever, asthenia, myalgia, rash, and anorexia; laboratory findings included thrombocytopenia and elevated hepatic aminotransferase concentrations. Physicians in China should consider R. japonica infection in at-risk patients.
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26
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Sando E, Suzuki M, Katayama M, Taira M, Fujita H, Ariyoshi K. Rickettsia japonica Infection after Land Leech Bite, Japan. Emerg Infect Dis 2019; 25:1243-1245. [PMID: 31107234 PMCID: PMC6537741 DOI: 10.3201/eid2506.181985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We report a case of Rickettsia japonica infection in an 81-year-old man in central Japan. The patient had fever, rash, and an eschar but no evidence of a tick bite. His symptoms began 8 days after a land leech bite. The land leech is a potential vector of R. japonica.
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27
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Qin XR, Han HJ, Han FJ, Zhao FM, Zhang ZT, Xue ZF, Ma DQ, Qi R, Zhao M, Wang LJ, Zhao L, Yu H, Liu JW, Yu XJ. Rickettsia japonica and Novel Rickettsia Species in Ticks, China. Emerg Infect Dis 2019; 25:992-995. [PMID: 31002060 PMCID: PMC6478201 DOI: 10.3201/eid2505.171745] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
PCR amplification indicated the minimum infection rate of Rickettsia spp. was 0.66% in Haemaphysalis longicornis ticks collected from Shandong Province, China. Phylogenetic analysis based on the rrs, gltA, ompA, and ompB genes indicated that the ticks carried R. japonica, Candidatus Rickettsia longicornii, and a novel Rickettsia species related to R. canadensis.
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28
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Satoh M, Kato H, Takayama-Ito M, Ogawa M, Ando S, Saijo M. In vitro evaluation of minimum inhibitory concentration of several antibacterial agents against Rickettsia japonica using a plaque reduction assay system. J Infect Chemother 2019; 25:917-919. [PMID: 31186196 DOI: 10.1016/j.jiac.2019.05.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/14/2019] [Accepted: 05/18/2019] [Indexed: 11/25/2022]
Abstract
The study was conducted to determine the minimum inhibitory concentrations (MICs) of several antibacterial agents against Rickettsia japonica, which causes Japanese spotted fever. A plaque reduction assay as an in vitro culture method was conducted to determine the MICs of antibacterial agents (4 types of tetracyclines: tetracycline, doxycycline, minocycline, and tigecycline; 3 types of quinolones: ciprofloxacin, ofloxacin, and levofloxacin; and 2 types of macrolides: azithromycin and clarythromycin) against R. japonica. R. japonica was sensitive to the antibacterial agents tested with MICs similar to those against other spotted fever rickettsia determined in previously described plaque reduction assays.
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Affiliation(s)
- Masaaki Satoh
- Department of Virology I, National Institute of Infectious Diseases, Japan
| | - Hirofumi Kato
- Department of Virology I, National Institute of Infectious Diseases, Japan
| | | | - Motohiko Ogawa
- Department of Virology I, National Institute of Infectious Diseases, Japan
| | - Shuji Ando
- Department of Virology I, National Institute of Infectious Diseases, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Japan.
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29
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Lu Q, Yu J, Yu L, Zhang Y, Chen Y, Lin M, Fang X. Rickettsia japonica Infections in Humans, Zhejiang Province, China, 2015. Emerg Infect Dis 2019; 24:2077-2079. [PMID: 30334710 PMCID: PMC6200003 DOI: 10.3201/eid2411.170044] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
We investigated 16 Japanese spotted fever cases that occurred in southeastern China during September–October 2015. Patients had fever, rash, eschar, and lymphadenopathy. We confirmed 9 diagnoses and obtained 2 isolates with high identity to Rickettsiajaponica strain YH. R. japonica infection should be considered for febrile patients in China.
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30
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Li J, Hu W, Wu T, Li HB, Hu W, Sun Y, Chen Z, Shi Y, Zong J, Latif A, Wang L, Yu L, Yu XJ, Liu BY, Liu Y. Japanese Spotted Fever in Eastern China, 2013. Emerg Infect Dis 2019; 24:2107-2109. [PMID: 30334711 PMCID: PMC6199993 DOI: 10.3201/eid2411.170264] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We isolated Rickettsia japonica from a febrile patient in Lu'an City, China, in 2013. Subsequently, we found an R. japonica seroprevalence of 54.8% (494/902) in the rural population of Anhui Province and an R. japonica prevalence in Haemaphysalis longicornis ticks of 0.5% (5/935). R. japonica and its tick vector exist in China.
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31
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Jiang J, Choi YJ, Kim J, Kim HC, Klein TA, Chong ST, Richards AL, Park HJ, Shin SH, Song D, Park KH, Jang WJ. Distribution of Rickettsia spp. in Ticks from Northwestern and Southwestern Provinces, Republic of Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2019; 57:161-166. [PMID: 31104408 PMCID: PMC6526208 DOI: 10.3347/kjp.2019.57.2.161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 12/23/2018] [Indexed: 11/30/2022]
Abstract
This study was done to characterize distribution of Rickettsia spp. in ticks in the northwestern and southwestern provinces in the Republic of Korea. A total of 2,814 ticks were collected between May and September 2009. After pooling, 284 tick DNA samples were screened for a gene of Rickettsia-specific 17-kDa protein using nested PCR (nPCR), and produced 88 nPCR positive samples. Of these positives, 75% contained 190-kDa outer membrane protein gene (ompA), 50% 120-kDa outer membrane protein gene (ompB), and 64.7% gene D (sca4). The nPCR products of ompA, ompB, and sca4 genes revealed close relatedness to Rickettsia japonica, R. heilongjiangensis, and R. monacensis. Most Rickettsia species were detected in Haemaphysalis longicornis. This tick was found a dominant vector of rickettsiae in the study regions in the Republic of Korea.
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Affiliation(s)
- Ju Jiang
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD 20910-7500, USA
| | - Yeon-Joo Choi
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Jeoungyeon Kim
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Heung-Chul Kim
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit 15281, APO AP 96271-5281, USA
| | - Terry A Klein
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit 15281, APO AP 96271-5281, USA
| | - Sung-Tae Chong
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit 15281, APO AP 96271-5281, USA
| | - Allen L Richards
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD 20910-7500, USA
| | - Hye-Jin Park
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Sun-Hye Shin
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Dayoung Song
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Kyung-Hee Park
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Won-Jong Jang
- Department of Microbiology, Konkuk University School of Medicine, Seoul 05029, Korea.,Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea
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32
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Sando E, Suzuki M, Katoh S, Fujita H, Taira M, Yaegashi M, Ariyoshi K. Distinguishing Japanese Spotted Fever and Scrub Typhus, Central Japan, 2004- 2015. Emerg Infect Dis 2019; 24:1633-1641. [PMID: 30124190 PMCID: PMC6106405 DOI: 10.3201/eid2409.171436] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Japanese spotted fever (JSF) and scrub typhus (ST) are endemic to Japan and share similar clinical features. To document the clinical and epidemiologic characteristics that distinguish these 2 rickettsial diseases, during 2004-2015 we recruited 31 JSF patients, 188 ST patients, and 97 nonrickettsial disease patients from the southern Boso Peninsula of Japan. JSF occurred during April-October and ST during November-December. Patients with JSF and ST were significantly older and more likely to reside in wooded areas than were patients with nonrickettsial diseases. Spatial analyses revealed that JSF and ST clusters rarely overlapped. Clinical findings more frequently observed in JSF than in ST patients were purpura, palmar/plantar rash, hyponatremia, organ damage, and delayed defervescence after treatment. Although their clinical features are similar, JSF and ST differ in seasonality, geographic distribution, physical signs, and severity. Because a considerable percentage of patients did not notice rash and eschar, many rickettsial diseases might be underdiagnosed in Japan.
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33
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Im JH, Baek J, Durey A, Kwon HY, Chung MH, Lee JS. Current Status of Tick-Borne Diseases in South Korea. Vector Borne Zoonotic Dis 2018; 19:225-233. [PMID: 30328790 DOI: 10.1089/vbz.2018.2298] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Bites with tick-borne pathogens can cause various bacterial, viral, or parasitic diseases in humans. Tick-transmitted diseases are known as contributing factors to the increasing incidence and burden of diseases. The present article investigated the epidemiology of tick-borne diseases in South Korea. METHODS The incidence and distribution of common tick-borne diseases in Korea (Lyme disease, Q fever, and severe fever with thrombocytopenia syndrome [SFTS]) were investigated and analyzed, using data from the Korea Centers for Disease Control and Prevention (KCDC) infectious disease reporting system. A literature review was compiled on the current status of uncommon tick-borne diseases (Rickettsia, anaplasmosis, ehrlichiosis, bartonellosis, tularemia, tick-borne encephalitis, and babesiosis). RESULTS AND CONCLUSIONS In South Korea, SFTS is an emerging disease, showing a rapid increase in reports since 2012, with high mortality. Likewise, reports of Lyme disease and Q fever cases have also been rapidly increasing during 2012-2017, although caution should be taken when interpreting these results, considering the likely influence of increased physician awareness and reporting of these diseases. Other tick-borne diseases reported in South Korea included spotted fever group rickettsiae, anaplasmosis, ehrlichiosis, tularemia, Bartonella, and babesiosis. Evidences on human infection with tick-borne encephalitis virus and Crimean-Congo hemorrhagic fever were recently unavailable, but both need constant monitoring.
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Affiliation(s)
- Jae Hyoung Im
- 1 Department of Internal Medicine and Inha University School of Medicine, Incheon, Republic of Korea
| | - JiHyeon Baek
- 1 Department of Internal Medicine and Inha University School of Medicine, Incheon, Republic of Korea
| | - Areum Durey
- 2 Department of Emergency Medicine, Inha University School of Medicine, Incheon, Republic of Korea
| | - Hea Yoon Kwon
- 1 Department of Internal Medicine and Inha University School of Medicine, Incheon, Republic of Korea
| | - Moon-Hyun Chung
- 3 Department of Internal Medicine, Jeju University Hospital, Jeju, Republic of Korea
| | - Jin-Soo Lee
- 1 Department of Internal Medicine and Inha University School of Medicine, Incheon, Republic of Korea
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34
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Distribution of tick-borne diseases in Japan: Past patterns and implications for the future. J Infect Chemother 2018; 24:499-504. [PMID: 29685854 DOI: 10.1016/j.jiac.2018.03.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 03/23/2018] [Indexed: 01/27/2023]
Abstract
The rapid geographical spread of tick-borne diseases (TBDs) worldwide has recently provoked significant concerns amongst public health authorities. Tick-borne pathogens are maintained in enzootic cycles involving ticks and wild animal hosts, with epizootic spread to other mammals, including livestock and humans. Despite the increasing public health concern, current TBD diagnostic tests and treatments are inadequate, and predictive models of future risks posed by TBDs are limited by the heterogeneity of environmental, vector, and host factors, even in neighboring regions. In recent years, infections resulting in severe fever with thrombocytopenia syndrome (SFTS), Japanese spotted fever, and the scrub typhus pathogens have been reported frequently in addition to traditional TBDs in Japan. The Japanese archipelago is extremely elongated from north to south and its climate varies considerably, creating remarkable regional differences in tick species. The importance of continuous surveillance of TBDs has been growing in terms of geopathology - studies dealing with the relationships between geographic factors and the causes of specific diseases - in Japan and neighboring areas among eastern Asian countries, including China and Korea. In this review, we summarize detailed information regarding the history and epidemic status of human TBDs in Japan.
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35
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Zhang X, Geng J, Du J, Wang Y, Qian W, Zheng A, Zou Z. Molecular Identification of Rickettsia Species in Haemaphysalis Ticks Collected from Southwest China. Vector Borne Zoonotic Dis 2018; 18:663-668. [PMID: 30129891 DOI: 10.1089/vbz.2017.2231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Rickettsia species are obligate intracellular Gram-negative bacteria that can infect a wide range of vertebrate hosts, including humans, through arthropod vectors such as Ixodid ticks. These ticks are a threat to humans and animals because they are the primary vectors or reservoirs for rickettsiae, which is of public health importance. In this study, we report the identification and percent of positive of Rickettsia spp. in ticks collected from Cangxi County, Southwest China. Haemaphysalis longicornis comprised 48.4% of the 188 ticks collected followed by Haemaphysalis flava (29.3%), H. doenitzi (12.2%), and Haemaphysalis hystricis (10.1%). A total of 63 (33.5%) ticks were positive with Rickettsia spp., with 48 (57%) of those being H. longicornis and 15 (27.3%) being H. flava. The other two tick species, however, did not have any ticks positive for rickettsial DNA. In addition, two different Rickettsia spp. were identified using gltA and ompA as molecular markers. The sequence of Rickettsia sp. infecting H. longicornis ticks was found to be identical to the Rickettsia sequences from Northeastern China and Japan (KF728367, AB516964). Phylogenetic analyses using these molecular markers support the notion that Rickettsia species from H. flava is the most close to a member of the Candidatus Rickettsia gannanii subgroup. The high percentage of Rickettsia positive in this Southwest China region suggests potential public health threat in the future and warrants to be monitored.
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Affiliation(s)
- Xing Zhang
- 1 College of Life Sciences, University of Chinese Academy of Sciences , Beijing, China
| | - Jingjing Geng
- 1 College of Life Sciences, University of Chinese Academy of Sciences , Beijing, China
| | - Jie Du
- 2 State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology , Chinese Academy of Sciences, Beijing, China
| | - Yanhong Wang
- 2 State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology , Chinese Academy of Sciences, Beijing, China
| | - Weiping Qian
- 3 Sichuan Provincial Center for Disease Control and Prevention , Sichuan, China
| | - Aihua Zheng
- 1 College of Life Sciences, University of Chinese Academy of Sciences , Beijing, China .,2 State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology , Chinese Academy of Sciences, Beijing, China
| | - Zhen Zou
- 1 College of Life Sciences, University of Chinese Academy of Sciences , Beijing, China .,2 State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology , Chinese Academy of Sciences, Beijing, China
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Igolkina Y, Rar V, Vysochina N, Ivanov L, Tikunov A, Pukhovskaya N, Epikhina T, Golovljova I, Tikunova N. Genetic variability of Rickettsia spp. in Dermacentor and Haemaphysalis ticks from the Russian Far East. Ticks Tick Borne Dis 2018; 9:1594-1603. [PMID: 30121164 DOI: 10.1016/j.ttbdis.2018.07.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/11/2018] [Accepted: 07/31/2018] [Indexed: 11/18/2022]
Abstract
The Russian Far East is an endemic region for tick-borne rickettsioses. However, the prevalence and genetic variability of Rickettsia species in this region have not been extensively investigated. In this study, 188 Dermacentor silvarum, 439 Haemaphysalis concinna, and 374 Haemaphysalis japonica adult ticks were collected from four locations in Khabarovsk Province and three locations in Amur Province in the Russian Far East. These ticks were examined for the presence of Rickettsia spp. by amplifying a fragment of the gltA gene. Identified rickettsiae were genotyped by sequencing of the gltA, 16S rRNA, ompA, ompB, and sca4 genes. In the examined ticks, Rickettsia heilongjiangensis, the causative agent of Far-Eastern tick-borne rickettsiosis, was found in 10.5% of H. concinna and in 1.9% of H. japonica ticks, while Rickettsia sibirica, the agent of Siberian tick typhus, was detected in only one H. concinna tick. In addition, Rickettsia raoultii was found predominantly in D. silvarum (>70%) and significantly less frequently in Haemaphysalis ticks (<3%). "Candidatus Rickettsia tarasevichiae" was found in all examined tick species (1.6-5.3% in different species). Notably, this study is the first observation of "Candidatus R. tarasevichiae" in D. silvarum ticks. Moreover, DNA of Rickettsia canadensis was found for the first time in a H. japonica tick; DNA of Rickettsia aeschlimannii was revealed for the first time in H. concinna and H. japonica ticks. "Candidatus Rickettsia principis" and "Candidatus Rickettsia rara" were found in Haemaphysalis spp. ticks. "Candidatus R. principis" was associated with H. japonica and identified in 5.6% of the examined ticks, while "Candidatus R. rara" was found more frequently in H. concinna (3.0%) compared to H. japonica ticks (1.1%). In this study, "Candidatus R. principis" and "Candidatus R. rara" were characterized for the first time by the 16S rRNA, ompA, ompB, and sca4 genes.
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Affiliation(s)
- Yana Igolkina
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation.
| | - Vera Rar
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation
| | - Nelya Vysochina
- Khabarovsk Antiplague Station, Khabarovsk, Russian Federation
| | - Leonid Ivanov
- Khabarovsk Antiplague Station, Khabarovsk, Russian Federation
| | - Artem Tikunov
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation
| | | | - Tamara Epikhina
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation
| | - Irina Golovljova
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation; Department of Virology, National Institute for Health Development, Estonia
| | - Nina Tikunova
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk, Russian Federation
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Maina AN, Klein TA, Kim HC, Chong ST, Yang Y, Mullins K, Jiang J, St. John H, Jarman RG, Hang J, Richards AL. Molecular characterization of novel mosquito-borne Rickettsia spp. from mosquitoes collected at the Demilitarized Zone of the Republic of Korea. PLoS One 2017; 12:e0188327. [PMID: 29155880 PMCID: PMC5695765 DOI: 10.1371/journal.pone.0188327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/03/2017] [Indexed: 12/21/2022] Open
Abstract
Rickettsiae are associated with a diverse range of invertebrate hosts. Of these, mosquitoes could emerge as one of the most important vectors because of their ability to transmit significant numbers of pathogens and parasites throughout the world. Recent studies have implicated Anopheles gambiae as a potential vector of Rickettsia felis. Herein we report that a metagenome sequencing study identified rickettsial sequence reads in culicine mosquitoes from the Republic of Korea. The detected rickettsiae were characterized by a genus-specific quantitative real-time PCR assay and sequencing of rrs, gltA, 17kDa, ompB, and sca4 genes. Three novel rickettsial genotypes were detected (Rickettsia sp. A12.2646, Rickettsia sp. A12.2638 and Rickettsia sp. A12.3271), from Mansonia uniformis, Culex pipiens, and Aedes esoensis, respectively. The results underscore the need to determine the Rickettsia species diversity associated with mosquitoes, their evolution, distribution and pathogenic potential.
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Affiliation(s)
- Alice N. Maina
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland, United States of America
- * E-mail:
| | - Terry A. Klein
- 65 Medical Brigade, Medical Department Activity-Korea, Unit 15281, Seoul, South Korea
| | - Heung-Chul Kim
- 65 Medical Brigade, Medical Department Activity-Korea, Unit 15247, Seoul, South Korea
| | - Sung-Tae Chong
- 65 Medical Brigade, Medical Department Activity-Korea, Unit 15247, Seoul, South Korea
| | - Yu Yang
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Kristin Mullins
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland, United States of America
- University of Maryland, School of Medicine, Department of Pathology, Baltimore, Maryland, United States of America
| | - Ju Jiang
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland, United States of America
| | - Heidi St. John
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland, United States of America
| | - Richard G. Jarman
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Jun Hang
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Allen L. Richards
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland, United States of America
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Kim YS, Choi YJ, Lee KM, Ahn KJ, Kim HC, Klein T, Jiang J, Richards A, Park KH, Jang WJ. First isolation of Rickettsia monacensis from a patient in South Korea. Microbiol Immunol 2017; 61:258-263. [PMID: 28593634 DOI: 10.1111/1348-0421.12496] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 05/20/2017] [Accepted: 06/01/2017] [Indexed: 11/28/2022]
Abstract
A Rickettsia sp. was isolated from the blood of a patient with an acute febrile illness using the shell vial technique; the isolate was named CN45Kr and was identified by molecular assay as Rickettsia monacensis, which was first recognized as a pathogen in Spain. Sequencing analysis showed that the gltA sequence of the isolate was identical to that of Rickettsia sp. IRS3. The ompA-5mp fragment sequence showed 100% identity to those of R. monacensis and Rickettsia sp. In56 and ompA-3pA In56 and 100% identity to that of Rickettsia sp. IRS3. The ompB sequence was found to have 99.9% similarity to that of R. monacensis IrR/Munich. This study confirms the pathogenicity of this agent and provides additional information about its geographic distribution.
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Affiliation(s)
- Yeon-Sook Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Munhwa-ro 282, Jung-gu, Daejeon 35015
| | - Yeon-Joo Choi
- Department of Microbiology, Konkuk University College of Medicine, Institute of Biomedical Science Building. Neungdong-ro 120, Gwangjin-gu, Seoul 05029
| | - Kyung-Min Lee
- Department of Microbiology, Konkuk University College of Medicine, Institute of Biomedical Science Building. Neungdong-ro 120, Gwangjin-gu, Seoul 05029.,International Vaccine Institute, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul, 151742
| | - Kyu-Joong Ahn
- Department of Dermatology, Konkuk University College of Medicine, Neungdong-ro 120-1, Gwangjin-gu, Seoul, 05029, South Korea
| | - Heung-Chul Kim
- Fifth Medical Detachment, 168th Multifunctional Medical Battalion, 65th Medical Brigade, Unit 15247, APO AP 96205-5247
| | - Terry Klein
- Force Health Protection and Preventive Medicine, 65th Medical Brigate/USAMEDDAC-K, Unit 15281, APO AP 96205-528
| | - Ju Jiang
- Department of Viral and Rickettsial Diseases, Naval Medical Research Center, Silver Spring, MD 20910, USA
| | - Allen Richards
- Department of Viral and Rickettsial Diseases, Naval Medical Research Center, Silver Spring, MD 20910, USA
| | - Kyung-Hee Park
- Department of Microbiology, Konkuk University College of Medicine, Institute of Biomedical Science Building. Neungdong-ro 120, Gwangjin-gu, Seoul 05029
| | - Won-Jong Jang
- Department of Microbiology, Konkuk University College of Medicine, Institute of Biomedical Science Building. Neungdong-ro 120, Gwangjin-gu, Seoul 05029
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Akter A, Ooka T, Gotoh Y, Yamamoto S, Fujita H, Terasoma F, Kida K, Taira M, Nakadouzono F, Gokuden M, Hirano M, Miyashiro M, Inari K, Shimazu Y, Tabara K, Toyoda A, Yoshimura D, Itoh T, Kitano T, Sato MP, Katsura K, Mondal SI, Ogura Y, Ando S, Hayashi T. Extremely Low Genomic Diversity of Rickettsia japonica Distributed in Japan. Genome Biol Evol 2017; 9:124-133. [PMID: 28057731 PMCID: PMC5381555 DOI: 10.1093/gbe/evw304] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2016] [Indexed: 12/25/2022] Open
Abstract
Rickettsiae are obligate intracellular bacteria that have small genomes as a result of reductive evolution. Many Rickettsia species of the spotted fever group (SFG) cause tick-borne diseases known as “spotted fevers”. The life cycle of SFG rickettsiae is closely associated with that of the tick, which is generally thought to act as a bacterial vector and reservoir that maintains the bacterium through transstadial and transovarial transmission. Each SFG member is thought to have adapted to a specific tick species, thus restricting the bacterial distribution to a relatively limited geographic region. These unique features of SFG rickettsiae allow investigation of how the genomes of such biologically and ecologically specialized bacteria evolve after genome reduction and the types of population structures that are generated. Here, we performed a nationwide, high-resolution phylogenetic analysis of Rickettsia japonica, an etiological agent of Japanese spotted fever that is distributed in Japan and Korea. The comparison of complete or nearly complete sequences obtained from 31 R. japonica strains isolated from various sources in Japan over the past 30 years demonstrated an extremely low level of genomic diversity. In particular, only 34 single nucleotide polymorphisms were identified among the 27 strains of the major lineage containing all clinical isolates and tick isolates from the three tick species. Our data provide novel insights into the biology and genome evolution of R. japonica, including the possibilities of recent clonal expansion and a long generation time in nature due to the long dormant phase associated with tick life cycles.
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Affiliation(s)
- Arzuba Akter
- Division of Microbiology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Tadasuke Ooka
- Department of Microbiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yasuhiro Gotoh
- Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Seigo Yamamoto
- Frontier Science Research Center, University of Miyazaki, Miyazaki, Japan
| | - Hiromi Fujita
- Mahara Institute of Medical Acarology, Tokushima, Japan
| | - Fumio Terasoma
- Wakayama Prefectural Research Center of Environment and Public Health, Wakayama, Japan
| | - Kouji Kida
- Okayama Prefectural Institute for Environmental Science and Public Health, Okayama, Japan
| | | | - Fumiko Nakadouzono
- Kagoshima Prefectural Institute for Environmental Research and Public Health, Kagoshima, Japan
| | - Mutsuyo Gokuden
- Kagoshima Prefectural Institute for Environmental Research and Public Health, Kagoshima, Japan
| | - Manabu Hirano
- Seihi Public Health Center of Nagasaki Prefecture, Nagasaki, Japan
| | - Mamoru Miyashiro
- Fukuoka City Institute for Health and Environment, Fukuoka, Japan
| | - Kouichi Inari
- Mahara Institute of Medical Acarology, Tokushima, Japan
| | - Yukie Shimazu
- Hiroshima Prefectural Technology Research Institute, Public Health and Environment Center, Hiroshima, Japan
| | - Kenji Tabara
- Department of Health and Welfare, Shimane Prefectural Government, Shimane, Japan
| | - Atsushi Toyoda
- Comparative Genomics Laboratory, National Institute of Genetics, Shizuoka, Japan
| | - Dai Yoshimura
- School of Life Science and Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Takehiko Itoh
- School of Life Science and Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Tomokazu Kitano
- Division of Microbiology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Mitsuhiko P Sato
- Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Keisuke Katsura
- Frontier Science Research Center, University of Miyazaki, Miyazaki, Japan
| | - Shakhinur Islam Mondal
- Division of Microbiology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yoshitoshi Ogura
- Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shuji Ando
- Department of Virology-1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuya Hayashi
- Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
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Noh Y, Lee YS, Kim HC, Chong ST, Klein TA, Jiang J, Richards AL, Lee HK, Kim SY. Molecular detection of Rickettsia species in ticks collected from the southwestern provinces of the Republic of Korea. Parasit Vectors 2017; 10:20. [PMID: 28069059 PMCID: PMC5223493 DOI: 10.1186/s13071-016-1955-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 12/23/2016] [Indexed: 12/19/2022] Open
Abstract
Background Rickettsiae constitute a group of arthropod-borne, Gram-negative, obligate intracellular bacteria that are the causative agents of diseases ranging from mild to life threatening that impact on medical and veterinary health worldwide. Methods A total of 6,484 ticks were collected by tick drag from June-October 2013 in the southwestern provinces of the Republic of Korea (ROK) (Jeollanam, n = 3,995; Jeollabuk, n = 680; Chungcheongnam, n = 1,478; and Chungcheongbuk, n = 331). Ticks were sorted into 311 pools according to species, collection site, and stage of development. DNA preparations of tick pools were assayed for rickettsiae by 17 kDa antigen gene and ompA nested PCR (nPCR) assays and the resulting amplicons sequenced to determine the identity and prevalence of spotted fever group rickettsiae (SFGR). Results Haemaphysalis longicornis (4,471; 52 adults, 123 nymphs and 4,296 larvae) were the most commonly collected ticks, followed by Haemaphysalis flava (1,582; 28 adults, 263 nymphs and 1,291 larvae), and Ixodes nipponensis (431; 25 adults, 5 nymphs and 401 larvae). The minimum field infection rate/100 ticks (assuming 1 positive tick/pool) was 0.93% for the 17 kDa antigen gene and 0.82% for the ompA nPCR assays. The partial 17 kDa antigen and ompA gene sequences from positive pools of H. longicornis were similar to: Rickettsia sp. HI550 (99.4–100%), Rickettsia sp. FUJ98 (99.3–100%), Rickettsia sp. HIR/D91 (99.3–100%), and R. japonica (99.7%). One sequence of the partial 17 kDa antigen gene for H. flava was similar to Rickettsia sp. 17kd-005 (99.7%), while seven sequences of the 17 kDa antigen gene obtained from I. nipponensis ticks were similar to R. monacensis IrR/Munich (98.7–100%) and Rickettsia sp. IRS3 (98.9%). Conclusions SFG rickettsiae were detected in three species of ixodid ticks collected in the southwestern provinces of the ROK during 2013. A number of rickettsiae have been recently reported from ticks in Korea, some of which were identified as medically important. Results from this study and previous reports demonstrate the need to conduct longitudinal investigations to identify tick-borne rickettsiae and better understand their geographical distributions and potential impact on medical and veterinary health, in addition to risk communication and development of rickettsial disease prevention strategies.
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Affiliation(s)
- Yoontae Noh
- Division of Zoonoses, National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, Chungcheongbuk-do, 28159, Republic of Korea
| | - Yeong Seon Lee
- Division of Zoonoses, National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, Chungcheongbuk-do, 28159, Republic of Korea
| | - Heung-Chul Kim
- 5th Medical Detachment, 168th Multifunctional Medical Battalion, 65th Medical Brigade, Unit 15247, Yongsan US Army Garrison, Seoul, APO AP 96205-5247, Republic of Korea
| | - Sung-Tae Chong
- 5th Medical Detachment, 168th Multifunctional Medical Battalion, 65th Medical Brigade, Unit 15247, Yongsan US Army Garrison, Seoul, APO AP 96205-5247, Republic of Korea
| | - Terry A Klein
- Public Health Command District-Korea, 65th Medical Brigade, Unit 15281, Yongsan US Army Garrison, Seoul, APO AP 96205-5281, Republic of Korea
| | - Ju Jiang
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD, 20910, USA
| | - Allen L Richards
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, MD, 20910, USA
| | - Hae Kyeong Lee
- Division of Zoonoses, National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, Chungcheongbuk-do, 28159, Republic of Korea
| | - Su Yeon Kim
- Division of Zoonoses, National Institute of Health, Centers for Disease Control and Prevention, Cheongju-si, Chungcheongbuk-do, 28159, Republic of Korea.
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Sul H, Kim DM. Present state and future of tick-borne infectious diseases in Korea. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2017. [DOI: 10.5124/jkma.2017.60.6.475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Hyoung Sul
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Korea
| | - Dong-Min Kim
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Korea
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Malaisri P, Hirunkanokpun S, Baimai V, Trinachartvanit W, Ahantarig A. Detection of Rickettsia and Anaplasma from hard ticks in Thailand. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2015; 40:262-268. [PMID: 26611960 DOI: 10.1111/jvec.12163] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 04/15/2015] [Indexed: 06/05/2023]
Abstract
We collected a total of 169 adult hard ticks and 120 nymphs from under the leaves of plants located along tourist nature trails in ten localities. The results present data examining the vector competence of ticks of different genera and the presence of Rickettsia and Anaplasma species. The ticks belonged to three genera, Amblyomma, Dermacentor, and Haemaphysalis, comprising 11 species. Rickettsia bacteria were detected at three collection sites, while Anaplasma bacteria were detected at only one site. Phylogenetic analysis revealed new rickettsia genotypes from Thailand that were closely related to Rickettsia tamurae, Rickettsia monacensis, and Rickettsia montana. This study was also the first to show that Anaplasma bacteria are found in Haemaphysalis shimoga ticks and are closely related evolutionarily to Anaplasma bovis. These results provide additional information for the geographical distribution of tick species and tick-borne bacteria in Thailand and can therefore be applied for ecotourism management.
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Affiliation(s)
- Premnika Malaisri
- Biodiversity Research Cluster, Department of Biology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Supanee Hirunkanokpun
- Department of Biology, Faculty of Science, Ramkhamhaeng University, Ramkhamhaeng Road, Bangkok, 10240, Thailand
| | - Visut Baimai
- Biodiversity Research Cluster, Department of Biology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
- Center of Excellence for Vectors and Vector-Borne Diseases, Faculty of Science, Mahidol University at Salaya, Phutthamonthon 4 Road, NakhonPathom, 73170, Thailand
| | - Wachareeporn Trinachartvanit
- Biodiversity Research Cluster, Department of Biology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Arunee Ahantarig
- Biodiversity Research Cluster, Department of Biology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand.
- Center of Excellence for Vectors and Vector-Borne Diseases, Faculty of Science, Mahidol University at Salaya, Phutthamonthon 4 Road, NakhonPathom, 73170, Thailand.
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Shin YC, Lee IY, Seo JH. Seasonal Patterns of Ticks in Pocheon and Cheolwon, Republic of Korea. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2015. [DOI: 10.15324/kjcls.2015.47.3.147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Yong Chil Shin
- Department of Biomedical Laboratory Science, Shinhan University, Uijeongbu 11644, Korea
| | - In Yong Lee
- Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jang Hoon Seo
- Department of Biomedical Laboratory Science, Shinhan University, Uijeongbu 11644, Korea
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Faccini-Martínez ÁA, García-Álvarez L, Hidalgo M, Oteo JA. Syndromic classification of rickettsioses: an approach for clinical practice. Int J Infect Dis 2014; 28:126-39. [PMID: 25242696 DOI: 10.1016/j.ijid.2014.05.025] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/23/2014] [Accepted: 05/24/2014] [Indexed: 10/24/2022] Open
Abstract
Rickettsioses share common clinical manifestations, such as fever, malaise, exanthema, the presence or absence of an inoculation eschar, and lymphadenopathy. Some of these manifestations can be suggestive of certain species of Rickettsia infection. Nevertheless none of these manifestations are pathognomonic, and direct diagnostic methods to confirm the involved species are always required. A syndrome is a set of signs and symptoms that characterizes a disease with many etiologies or causes. This situation is applicable to rickettsioses, where different species can cause similar clinical presentations. We propose a syndromic classification for these diseases: exanthematic rickettsiosis syndrome with a low probability of inoculation eschar and rickettsiosis syndrome with a probability of inoculation eschar and their variants. In doing so, we take into account the clinical manifestations, the geographic origin, and the possible vector involved, in order to provide a guide for physicians of the most probable etiological agent.
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Affiliation(s)
| | - Lara García-Álvarez
- Infectious Diseases Department, Center of Rickettsioses and Vector-borne Diseases, Hospital San Pedro-CIBIR, Logroño, Spain
| | - Marylin Hidalgo
- Microbiology Department, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - José A Oteo
- Infectious Diseases Department, Center of Rickettsioses and Vector-borne Diseases, Hospital San Pedro-CIBIR, Logroño, Spain.
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Lai CH, Chang LL, Lin JN, Tsai KH, Hung YC, Kuo LL, Lin HH, Chen YH. Human spotted fever group rickettsioses are underappreciated in southern Taiwan, particularly for the species closely-related to Rickettsia felis. PLoS One 2014; 9:e95810. [PMID: 24755560 PMCID: PMC3995941 DOI: 10.1371/journal.pone.0095810] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 03/31/2014] [Indexed: 01/25/2023] Open
Abstract
Background Despite increased identification of spotted fever group rickettsioses (SFGR) in animals and arthropods, human SFGR are poorly characterized in Taiwan. Methods Patients with suspected Q fever, scrub typhus, murine typhus, leptospirosis, and dengue fever from April 2004 to December 2009 were retrospectively investigated for SFGR antibodies (Abs). Sera were screened for Rickettsia rickettsii Abs by indirect immunofluorescence antibody assay (IFA), and those with positive results were further examined for Abs against R. rickettsii, R. typhi, R. felis, R. conorii, and R. japonica using micro-immunofluorescence (MIF) tests. Polymerase chain reaction (PCR) for detection of SFGR DNA was applied in those indicated acute infections. Case geographic distribution was made by the geographic information system software. Results A total of 413 cases with paired serum, including 90 cases of Q fever, 47 cases of scrub typhus, 12 cases of murine typhus, 6 cases of leptospirosis, 3 cases of dengue fever, and 255 cases of unknown febrile diseases were investigated. Using IFA tests, a total of 49 cases with 47 (11.4%) and 4 (1.0%) cases had sera potentially positive for R. rickettsii IgG and IgM, respectively. In the 49 cases screened from IFA, MIF tests revealed that there were 5 cases of acute infections (3 possible R. felis and 2 undetermined SFGR) and 13 cases of past infections (3 possible R. felis and 10 undetermined SFGR). None of the 5 cases of acute infection had detectable SFGR DNA in the blood specimen by PCR. Possible acute infection of R. felis was identified in both one case of Q fever and scrub typhus. The geographic distribution of SFGR cases is similar with that of scrub typhus. Conclusions Human SFGR exist and are neglected diseases in southern Taiwan, particularly for the species closely-related to R. felis.
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Affiliation(s)
- Chung-Hsu Lai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- Division of Infectious Diseases, Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
- Division of Infection Control Laboratory, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Lin-Li Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- Faculty of Medicine, Department of Microbiology, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Jiun-Nong Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- Division of Infectious Diseases, Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Kun-Hsien Tsai
- Institute of Environmental Health, College of Public, Health, National Taiwan University, Taipei City, Taiwan
- Infectious Diseases Research and Education Center, Ministry of Health and Welfare and National Taiwan University, Taipei City, Taiwan
| | - Ya-Chien Hung
- Division of Infection Control Laboratory, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Li-Li Kuo
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- Research and Diagnostic Center, Centers for Disease Control, Department of Health, Taipei City, Taiwan
| | - Hsi-Hsun Lin
- Division of Infectious Diseases, Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei City, Taiwan
| | - Yen-Hsu Chen
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
- * E-mail:
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Shin SH, Seo HJ, Choi YJ, Choi MK, Kim HC, Klein TA, Chong ST, Richards AL, Park KH, Jang WJ. Detection of Rickettsia monacensis from Ixodes nipponensis collected from rodents in Gyeonggi and Gangwon Provinces, Republic of Korea. EXPERIMENTAL & APPLIED ACAROLOGY 2013; 61:337-347. [PMID: 23624621 DOI: 10.1007/s10493-013-9699-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 04/17/2013] [Indexed: 06/02/2023]
Abstract
A total of 1,305 ticks were collected from wild rodents captured monthly, except July and August, during 2008 at three US-ROK operated military training sites and three US military installations in Gyeonggi and Gangwon Provinces, the Republic of Korea (ROK). Ixodes nipponensis was the most frequently collected tick (n = 1,299, 99.5 %), followed by Ixodes pomerantzevi (n = 6, 0.5 %). The ticks were pooled (1-15/sample) and tested by nested polymerase chain reaction (nPCR) for spotted fever group (SFG) rickettsiae with primer sets targeting the outer membrane protein B (ompB), citrate synthase (gltA), and 17-kDa antigen gene loci. A total of 115/197 (58.4 %) pools were positive by nPCR for the outer membrane protein ompB. Nucleotide sequence analysis of 105/115 (91.3 %) ompB targeted nPCR positive products showed a high degree of similarity to Rickettsia monacensis (99.3-100 %, n = 87) and R. japonica (99.5-100 %, n = 18). From the 87 positive samples demonstrating a high degree of similarity to R. monacensis, 15 were selected and analyzed by nPCR for gltA and the 17-kDa genes. A total of 12/15 pooled samples were positive for by nPCR for gltA, with amplicons demonstrating a high degree of similarity to R. monacensis (99.3-99.7 %). A total of 13/15 pooled samples were positive by nPCR for the 17-kDa gene, with amplicons demonstrating a high degree of similarity to R. monacensis (99.4-100 %). These findings demonstrate that R. monacensis is distributed throughout Gyeonggi and Gangwon Provinces in the ROK. Furthermore, data suggest a relative high prevalence of R. monacensis in the tick, I. nipponensis.
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Affiliation(s)
- Sun-Hye Shin
- Institute of Glocal Disease Control, Department of Microbiology, College of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea
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Parola P, Paddock CD, Socolovschi C, Labruna MB, Mediannikov O, Kernif T, Abdad MY, Stenos J, Bitam I, Fournier PE, Raoult D. Update on tick-borne rickettsioses around the world: a geographic approach. Clin Microbiol Rev 2013; 26:657-702. [PMID: 24092850 PMCID: PMC3811236 DOI: 10.1128/cmr.00032-13] [Citation(s) in RCA: 908] [Impact Index Per Article: 82.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia. These zoonoses are among the oldest known vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. Several species of tick-borne rickettsiae that were considered nonpathogenic for decades are now associated with human infections, and novel Rickettsia species of undetermined pathogenicity continue to be detected in or isolated from ticks around the world. This remarkable expansion of information has been driven largely by the use of molecular techniques that have facilitated the identification of novel and previously recognized rickettsiae in ticks. New approaches, such as swabbing of eschars to obtain material to be tested by PCR, have emerged in recent years and have played a role in describing emerging tick-borne rickettsioses. Here, we present the current knowledge on tick-borne rickettsiae and rickettsioses using a geographic approach toward the epidemiology of these diseases.
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Affiliation(s)
- Philippe Parola
- Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), UM63, CNRS 7278, IRD 198, Inserm 1095, WHO Collaborative Center for Rickettsioses and Other Arthropod-Borne Bacterial Diseases, Faculté de Médecine, Marseille, France
| | | | - Cristina Socolovschi
- Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), UM63, CNRS 7278, IRD 198, Inserm 1095, WHO Collaborative Center for Rickettsioses and Other Arthropod-Borne Bacterial Diseases, Faculté de Médecine, Marseille, France
| | - Marcelo B. Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia Universidade de São Paulo, Cidade Universitária, São Paulo, SP, Brazil
| | - Oleg Mediannikov
- Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), UM63, CNRS 7278, IRD 198, Inserm 1095, WHO Collaborative Center for Rickettsioses and Other Arthropod-Borne Bacterial Diseases, Faculté de Médecine, Marseille, France
| | - Tahar Kernif
- Service d'Ecologie des Systèmes Vectoriels, Institut Pasteur d'Algérie, Algiers, Algeria
| | - Mohammad Yazid Abdad
- Division of Veterinary and Biomedical Science, Murdoch University, Australian Rickettsial Reference Laboratory, Barwon Health, Geelong, Victoria, Australia
| | - John Stenos
- Division of Veterinary and Biomedical Science, Murdoch University, Australian Rickettsial Reference Laboratory, Barwon Health, Geelong, Victoria, Australia
| | - Idir Bitam
- University of Boumerdes, Boumerdes, Algeria
| | - Pierre-Edouard Fournier
- Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), UM63, CNRS 7278, IRD 198, Inserm 1095, WHO Collaborative Center for Rickettsioses and Other Arthropod-Borne Bacterial Diseases, Faculté de Médecine, Marseille, France
| | - Didier Raoult
- Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), UM63, CNRS 7278, IRD 198, Inserm 1095, WHO Collaborative Center for Rickettsioses and Other Arthropod-Borne Bacterial Diseases, Faculté de Médecine, Marseille, France
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Complete genomic DNA sequence of the East Asian spotted fever disease agent Rickettsia japonica. PLoS One 2013; 8:e71861. [PMID: 24039725 PMCID: PMC3767692 DOI: 10.1371/journal.pone.0071861] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Accepted: 07/05/2013] [Indexed: 12/04/2022] Open
Abstract
Rickettsia japonica is an obligate intracellular alphaproteobacteria that causes tick-borne Japanese spotted fever, which has spread throughout East Asia. We determined the complete genomic DNA sequence of R. japonica type strain YH (VR-1363), which consists of 1,283,087 base pairs (bp) and 971 protein-coding genes. Comparison of the genomic DNA sequence of R. japonica with other rickettsiae in the public databases showed that 2 regions (4,323 and 216 bp) were conserved in a very narrow range of Rickettsia species, and the shorter one was inserted in, and disrupted, a preexisting open reading frame (ORF). While it is unknown how the DNA sequences were acquired in R. japonica genomes, it may be a useful signature for the diagnosis of Rickettsia species. Instead of the species-specific inserted DNA sequences, rickettsial genomes contain Rickettsia-specific palindromic elements (RPEs), which are also capable of locating in preexisting ORFs. Precise alignments of protein and DNA sequences involving RPEs showed that when a gene contains an inserted DNA sequence, each rickettsial ortholog carried an inserted DNA sequence at the same locus. The sequence, ATGAC, was shown to be highly frequent and thus characteristic in certain RPEs (RPE-4, RPE-6, and RPE-7). This finding implies that RPE-4, RPE-6, and RPE-7 were derived from a common inserted DNA sequence.
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Kurokawa I, Kondo M, Akachi S. Early diagnosis of Japan spotted fever by PCR using skin samples. J Infect Chemother 2013; 19:628-32. [DOI: 10.1007/s10156-012-0529-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 11/22/2012] [Indexed: 11/28/2022]
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Bell DR, Berghaus RD, Patel S, Beavers S, Fernandez I, Sanchez S. Seroprevalence of tick-borne infections in military working dogs in the Republic of Korea. Vector Borne Zoonotic Dis 2012; 12:1023-30. [PMID: 23167501 DOI: 10.1089/vbz.2011.0864] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this study we endeavored to determine the seroprevalence of tick-borne infections in the military working dog (MWD) population in the Republic of Korea (ROK). Our sample population consisted of 182 serum samples from MWDs for 3 different years (1996, 2002, and 2007). In addition, 63 whole blood samples from 2007 were available for polymerase chain reaction (PCR). Serum samples were evaluated by a commercially available enzyme-linked immunosorbent assay (ELISA) and immunofluorescence assay (IFA) for Ehrlichia canis and Anaplasma phagocytophilum, and by ELISA only for Borrelia burgdorferi. PCR amplification of DNA was performed to screen for Ehrlichia canis, E. chaffeensis, E. ewingii, Anaplasma phagocytophilum, A. platys, Borrelia burgdorferi, and Rickettsia rickettsii, as well as Babesia and Theileria species using previously published primers and probes. A total of 56 (30.8%) MWDs were positive by at least one serologic test. Seroprevalences for Anaplasma and Ehrlichia were 4.4% and 0.6% based on the ELISA, and 24.7% and 22.5% based on the IFA, respectively. ELISA testing for Borrelia yielded 2 (1.1%) positive results. In parallel testing using both the ELISA and IFA tests, the percentages of dogs with one or more positive results were 34.1%, 25.9%, and 28.4%, for 1996, 2002, and 2007, respectively. There was no significant differences in seroprevalence based on location, year, breed, or sex of the MWD. There was poor agreement between IFA and ELISA test results. No MWD sample had a positive PCR result. MWDs stationed in Korea had serologic evidence of exposure to several tick-borne pathogens, but PCR testing did not identify any active infections.
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Affiliation(s)
- Dennis R Bell
- Department of Small Animal Medicine, University of Georgia College of Veterinary Medicine , University of Georgia, Athens, Georgia, USA.
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