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Hidaka K, Mitoma S, Norimine J, Shimojima M, Kuroda Y, Hinoura T. Seroprevalence for severe fever with thrombocytopenia syndrome virus among the residents of Miyazaki, Japan: An epidemiological study. J Infect Chemother 2024; 30:481-487. [PMID: 38042299 DOI: 10.1016/j.jiac.2023.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/14/2023] [Accepted: 11/24/2023] [Indexed: 12/04/2023]
Abstract
INTRODUCTION Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne infectious disease caused by the SFTS virus (SFTSV). The Miyazaki Prefecture has the highest number of SFTS cases in Japan and requires countermeasures for prevention. In this study, we aimed to conduct an epidemiological survey in Miyazaki Prefecture to determine the exposure conditions of SFTSV by measuring the seroprevalence among residents of Miyazaki and to evaluate the factors that influence the endemicity of SFTS. METHODS The survey was conducted between June 2014 and April 2019 in all 26 municipalities in Miyazaki Prefecture. SFTSV antibodies were detected using an enzyme-linked immunosorbent assay in the blood samples of 6013 residents (3184 men and 2829 women). A questionnaire-based survey of the living environment was also conducted. RESULTS Multiple logistic regression analysis revealed that age and occupation were significant factors related to the proportion of participants with an optical density (OD) value > 0.2 and a seroprevalence of 0.9 % (54/6013). Seven seropositive individuals (0.1 %) with an OD value of >0.4 were identified (three men and four women, aged 54-69 years), and all were asymptomatic. One participant had a higher OD than the positive control. CONCLUSION Although SFTS is endemic in Miyazaki Prefecture, Japan, its seroprevalence is relatively low. Since some risk areas in Miyazaki prefecture have been identified, it is important to enhance awareness of SFTS in residences and reduce contact with ticks, especially in high-risk areas.
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Affiliation(s)
- Kazuhiro Hidaka
- Department of Public Health, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shuya Mitoma
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Junzo Norimine
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Masayuki Shimojima
- Special Pathogens Laboratory, Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yoshiki Kuroda
- Department of Public Health, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Takuji Hinoura
- Department of Public Health, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
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Rim JM, Han SW, Cho YK, Kang JG, Choi KS, Chae JS. Serologic and Molecular Prevalence of Severe Fever with Thrombocytopenia Syndrome Virus Among Poultry in the Republic of Korea. Vector Borne Zoonotic Dis 2023; 23:662-669. [PMID: 37788402 DOI: 10.1089/vbz.2023.0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023] Open
Abstract
Background: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by Dabie bandavirus, which belongs to the genus Bandavirus, family Phenuiviridae, and order Bunyavirales. It has been found in tick species, various animals, and humans. The aim of this study was to detect RNA of antigens and antibodies against SFTS virus (SFTSV) among poultry such as chickens, ducks, and wild geese from five provinces in the Republic of Korea (ROK). Materials and Methods: A one-step reverse transcriptase (RT)-PCR and nested PCR were performed after viral RNA extraction. The phylogenetic tree was constructed after sequencing data were analyzed and aligned. An indirect enzyme-linked immunosorbent assay (ELISA) and a neutralization test (NT) were performed to test for IgG antibodies of SFTSV. Results: Of a total of 606 poultry serum samples collected, 568 and 539 serum samples were used to perform ELISA and NT, respectively. Of a total of 606 serum samples tested by RT-PCR targeting the S segment, 15 (2.5%) were positive for SFTSV. From the 15 positive serum samples for the SFTSV antigen, three from chickens, three from ducks, and one from wild geese were classified as genotype B-2; one from chickens was classified as genotype B-3; and three from chickens and four from wild geese were classified as genotype D. Of the 568 serum samples tested by ELISA, 83 (28.0%) from chickens, 81 (32.9%) from ducks, and 8 (30.8%) from wild geese were seropositive. Of the 539 serum samples for which an NT was performed, 113 (38.6%) from chickens and 75 (30.5%) from ducks were positive for SFTSV antibodies. Conclusions: The results of this study provide useful information regarding detection of SFTSV RNA and antibodies among poultry and the possibility of SFTSV transmission in various types of poultry, including chickens, ducks, and wild geese, in the ROK.
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Affiliation(s)
- Ji-Min Rim
- Laboratory of Veterinary Internal Medicine, BK21 FOUR Future Veterinary Medicine Leading Education and Research Centre, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Sun-Woo Han
- Laboratory of Veterinary Internal Medicine, BK21 FOUR Future Veterinary Medicine Leading Education and Research Centre, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Yoon-Kyoung Cho
- Laboratory of Veterinary Internal Medicine, BK21 FOUR Future Veterinary Medicine Leading Education and Research Centre, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jun-Gu Kang
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, Republic of Korea
| | - Kyoung-Seong Choi
- Department of Animal Science and Biotechnology, College of Ecology and Environmental Science, Kyungpook National University, Sangju, Republic of Korea
| | - Joon-Seok Chae
- Laboratory of Veterinary Internal Medicine, BK21 FOUR Future Veterinary Medicine Leading Education and Research Centre, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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Rim JM, Han SW, Cho YK, Kang JG, Choi KS, Jeong H, Son K, Kim J, Choi Y, Kim WM, Cho NH, Chae JS. Survey of severe fever with thrombocytopenia syndrome virus in wild boar in the Republic of Korea. Ticks Tick Borne Dis 2021; 12:101813. [PMID: 34411795 DOI: 10.1016/j.ttbdis.2021.101813] [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: 09/07/2020] [Revised: 05/23/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is caused by Dabie bandavirus that belongs to the genus Bandavirus in the family Phenuiviridae and order Bunyavirales and is transmitted by hard ticks. It has been detected in several tick species, various animals, and humans. The purpose of this study was to detect SFTS virus (SFTSV) antigen and antibody in wild boar in the Republic of Korea (ROK). A total of 768 sera samples were collected from wild boar in the ROK between January and December 2019. Viral RNA was extracted from sera using viral RNA extraction kit, and one-step RT-nested polymerase chain reaction (PCR) was performed to amplify the S segment of the SFTSV. The sequencing data were analyzed using Chromas and aligned using Clustal X. The phylogenetic tree was constructed using the maximum-likelihood method using MEGA7. In addition, wild boar sera were tested for IgG antibodies against SFTSV by enzyme-linked immunosorbent assay (ELISA) and immunofluorescence assay (IFA). Of a total of 768 sera samples, 40 (5.2%) were positive for SFTSV by RT-PCR targeting the S segment. Two hundred twenty-one (28.8%) and 159 (20.7%) of 768 sera samples were seropositive by ELISA and IFA, respectively. Based on both ELISA and IFA tests of the same samples, 110 (14.3%) wild boar sera samples were positive for SFTSV antibodies. Of a total of 40 positive serum samples by RT-PCR, 33 (82.5%) and 7 (17.5%) sera were classified as the genotype B-3 and D, respectively, by sequence analysis,. These results provide useful information that demonstrates the detection of antigen and antibody in wild boar sera samples for every month of a certain year throughout the ROK.
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Affiliation(s)
- Ji-Min Rim
- Laboratory of Veterinary Internal Medicine, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sun-Woo Han
- Laboratory of Veterinary Internal Medicine, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yoon-Kyoung Cho
- Laboratory of Veterinary Internal Medicine, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jun-Gu Kang
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Republic of Korea
| | - Kyoung-Seong Choi
- College of Ecology and Environmental Science, Kyungpook National University, Sangju 37224, Republic of Korea
| | - Hyesung Jeong
- National Institute of Wildlife Disease Control and Prevention, 1 Songam-gil, Gwangsan-gu, Gwangju 62407, Republic of Korea
| | - Kidong Son
- National Institute of Wildlife Disease Control and Prevention, 1 Songam-gil, Gwangsan-gu, Gwangju 62407, Republic of Korea
| | - Jisoo Kim
- National Institute of Wildlife Disease Control and Prevention, 1 Songam-gil, Gwangsan-gu, Gwangju 62407, Republic of Korea
| | - Yongjun Choi
- National Institute of Wildlife Disease Control and Prevention, 1 Songam-gil, Gwangsan-gu, Gwangju 62407, Republic of Korea
| | - Won-Meong Kim
- National Institute of Wildlife Disease Control and Prevention, 1 Songam-gil, Gwangsan-gu, Gwangju 62407, Republic of Korea
| | - Nam-Hyuk Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Joon-Seok Chae
- Laboratory of Veterinary Internal Medicine, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
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Sharma D, Kamthania M. A new emerging pandemic of severe fever with thrombocytopenia syndrome (SFTS). Virusdisease 2021; 32:220-227. [PMID: 33942022 PMCID: PMC8082055 DOI: 10.1007/s13337-021-00656-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
The aim of this study is to make aware every one of the deadliest diseases named severe fever with thrombocytopenia syndrome (SFTS). It has become the worldwide pandemic in recent few years. It is a kind of haemorrhagic fever, caused by SFTS virus (SFTSV), a novel phlebovirus of family Bunyaviridae. This syndrome is also a tick-borne zoonosis that means the virus transmitted from tick bite (having virus) into human body, i.e. infection spread from animals to humans and also transmitted from human to human. Epidemiological data of SFTS was collected to know the nature/symptoms of SFTSV. First case of this disease has been reported in China, followed by Japan, South korea, Taiwan, USA and many other countries. Vertebrates are the host of this disease and tick functions as a vector, where the virus can undergo brisk changes using gene mutation, homologous recombination and reassortments. The major symptoms of hemorrhagic fever are fever, thrombocytopenia, leucopenia and gastrointestinal abnormalities. Sometimes in very severe cases, full body organ failure may also take place and average death rate in humans is nearly 10 %. Old aged peoples are more prone to SFTSV infection. Apart from the fact of increasing SFTSV related health problems to humans, the pathogenesis of SFTS virus in human is not entirely understood and no treatment to this virus is still available. The simplest way to protect our self from this infection is to refrain from tick bite. Therefore, this disease has evolved to produce serious health issues to humans in various countries of world including china. This review discussing about causative agent, epidemiology, pathogenesis, diagnosis and treatment of SFTS. In order to control the spread of SFTSV, we have to stop the viral transmission or to protect the easily vulnerable population from tick bites, avoiding direct contact of infectious and also to use personal protective devices for SFTS patients. So, the weather conditions, mode of transmission and creation of new therapeutics like vaccines and drugs are the main areas of forthcoming research.
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Affiliation(s)
- Divya Sharma
- Department of Life Sciences, IAMR College, Ghaziabad, Uttar Pradesh India
| | - Mohit Kamthania
- Department of Life Sciences, IAMR College, Ghaziabad, Uttar Pradesh India
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Huang XY, He ZQ, Wang BH, Hu K, Li Y, Guo WS. Severe fever with thrombocytopenia syndrome virus: a systematic review and meta-analysis of transmission mode. Epidemiol Infect 2020; 148:e239. [PMID: 32993819 PMCID: PMC7584033 DOI: 10.1017/s0950268820002290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 11/29/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a disease with a high case-fatality rate that is caused by infection with the SFTS virus (SFTSV). Five electronic databases were systematically searched to identify relevant articles published from 1 January 2011 to 1 December 2019. The pooled rates with 95% confidence interval (CI) were calculated by a fixed-effect or random-effect model analysis. The results showed that 92 articles were included in this meta-analysis. For the confirmed SFTS cases, the case-fatality rate was 0.15 (95% CI 0.11, 0.18). Two hundred and ninety-six of 1384 SFTS patients indicated that they had been bitten by ticks and the biting rate was 0.21 (95% CI 0.16, 0.26). The overall pooled seroprevalence of SFTSV antibodies among the healthy population was 0.04 (95% CI 0.03, 0.05). For the overall seroprevalence of SFTSV in animals, the seroprevalence of SFTSV was 0.25 (95% CI 0.20, 0.29). The infection rate of SFTSV in ticks was 0.08 (95% CI 0.05, 0.11). In conclusion, ticks can serve as transmitting vectors of SFTSVs and reservoir hosts. Animals can be infected by tick bites, and as a reservoir host, SFTSV circulates continuously between animals and ticks in nature. Humans are infected by tick bites and direct contact with patient secretions.
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Affiliation(s)
- X. Y. Huang
- Henan Province Center for Disease Control and Prevention, Zhengzhou, China
- Henan Key Laboratory of Pathogenic Microorganisms, Zhengzhou, China
| | - Z. Q. He
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - B. H. Wang
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - K. Hu
- Henan Academy of Medical Sciences, Zhengzhou, China
| | - Y. Li
- Henan Province Center for Disease Control and Prevention, Zhengzhou, China
- Henan Key Laboratory of Pathogenic Microorganisms, Zhengzhou, China
| | - W. S. Guo
- Henan Province Center for Disease Control and Prevention, Zhengzhou, China
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Huang C, Wei Q, Hu Q, Wen T, Xue L, Li S, Zeng X, Shi F, Jiao Y, Zhou L. Rapid detection of severe fever with thrombocytopenia syndrome virus (SFTSV) total antibodies by up-converting phosphor technology-based lateral-flow assay. LUMINESCENCE 2019; 34:162-167. [DOI: 10.1002/bio.3588] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/25/2018] [Accepted: 12/04/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Huang
- Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control; Nanjing China
| | - Qiaozhen Wei
- School of Laboratory Medicine and Life Sciences; Wenzhou Medical University; Wenzhou China
| | - Qiushi Hu
- National Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering; Institute of Process Engineering, Chinese Academy of Sciences; Beijing China
| | - Tian Wen
- Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control; Nanjing China
| | - Lei Xue
- National Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering; Institute of Process Engineering, Chinese Academy of Sciences; Beijing China
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University; Tai’an China
| | - Shuang Li
- National Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering; Institute of Process Engineering, Chinese Academy of Sciences; Beijing China
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University; Tai’an China
| | - Xiaoyan Zeng
- Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control; Nanjing China
| | - Fengjuan Shi
- Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control; Nanjing China
| | - Yongjun Jiao
- Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control; Nanjing China
| | - Lei Zhou
- National Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering; Institute of Process Engineering, Chinese Academy of Sciences; Beijing China
- Laboratory of Analytical Microbiology, State Key Laboratory of Pathogen and Biosecurity; Beijing Institute of Microbiology and Epidemiology; Beijing China
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7
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Zuo JY, Jiao YJ, Zhu J, Ding SN. Rapid Detection of Severe Fever with Thrombocytopenia Syndrome Virus via Colloidal Gold Immunochromatography Assay. ACS OMEGA 2018; 3:15399-15406. [PMID: 30556007 PMCID: PMC6288773 DOI: 10.1021/acsomega.8b02366] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 10/31/2018] [Indexed: 05/19/2023]
Abstract
To develop the point-of-care testing method to facilitate the clinical detection of severe fever with thrombocytopenia syndrome virus (SFTSV), colloidal gold paper-based lateral flow immunochromatography test strips (LFITSs) have been fabricated for the rapid detection for the first time. The pH value and the amount of monoclonal antibody to prepare colloidal gold nanoparticle-labeled monoclonal antibody bioconjugates were optimized. In addition, 0.4% bovine serum albumin was considered to be the best concentration for blocking nitrocellulose membranes. Under optimal conditions, the limit of detection for SFTSV was as low as 1 ng/mL depending on a visual line. Meanwhile, the entire detection process required no more than 10 min with a volume of only 50 μL of the analyte solution. Moreover, paper-based LFITSs were evaluated in real samples of human serum of patients with satisfactory results. In addition, all strips were of high stability and specificity. In the light of advantages such as simple, portable, rapid, and low cost, the developed LFITSs will extensively come into service, especially in remote areas.
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Affiliation(s)
- Jia-Ying Zuo
- Jiangsu
Province Hi-Tech Key Laboratory for Bio-Medical Research, School of
Chemistry and Chemical Engineering, Southeast
University, Nanjing 211189, China
| | - Yong-Jun Jiao
- Jiangsu
Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Jin Zhu
- Huadong
Medical Institute of Biotechniques, Nanjing 210002, China
| | - Shou-Nian Ding
- Jiangsu
Province Hi-Tech Key Laboratory for Bio-Medical Research, School of
Chemistry and Chemical Engineering, Southeast
University, Nanjing 211189, China
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Gokuden M, Fukushi S, Saijo M, Nakadouzono F, Iwamoto Y, Yamamoto M, Hozumi N, Nakayama K, Ishitani K, Nishi N, Ootsubo M. Low Seroprevalence of Severe Fever with Thrombocytopenia Syndrome Virus Antibodies in Individuals Living in an Endemic Area in Japan. Jpn J Infect Dis 2018; 71:225-228. [PMID: 29709983 DOI: 10.7883/yoken.jjid.2017.497] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne infection with a high mortality rate. It is caused by the SFTS virus (SFTSV) and is endemic in some areas in western Japan, including the Kagoshima prefecture. In the present study, healthy individuals living in this prefecture were examined to assess for anti-SFTSV seroprevalence. An initial study was performed using the serum samples collected from a total of 646 individuals living in Kagoshima. At the same time, a questionnaire was used to collect information (such as occupation and a history of tick bite). Enzyme-linked immunosorbent assay and indirect immunofluorescence assay were used for the screening. Finally, the seroprevalence of anti-SFTSV antibodies was confirmed using a neutralization assay. Only 2 (0.3%) out of 646 study participants were positive for anti-SFTSV antibodies. No significant difference was observed between individuals who are at a high or low risk of tick bite in terms of seropositivity. Next, a total of 1,000 serum samples collected from general blood donors by the Japanese Red Cross Kyushu Block Blood Center were tested. None of these samples tested positive for anti-SFTSV antibodies. These results suggest a low seroprevalence of anti-SFTSV antibodies in healthy individuals living in an endemic area in Japan.
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Affiliation(s)
- Mutsuyo Gokuden
- Kagoshima Prefectural Institute for Environmental Research and Public Health
| | - Shuetsu Fukushi
- Department of Virology 1, National Institute of Infectious Diseases
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Diseases
| | - Fumiko Nakadouzono
- Health Promotion Division of the Health and Social Welfare Department, Kagoshima Prefecture
| | - Yuka Iwamoto
- Kagoshima Prefectural Institute for Environmental Research and Public Health
| | - Mami Yamamoto
- Kagoshima Prefectural Institute for Environmental Research and Public Health
| | - Nodoka Hozumi
- Kagoshima Prefectural Institute for Environmental Research and Public Health
| | - Kouichiro Nakayama
- Kagoshima Prefectural Institute for Environmental Research and Public Health
| | - Kanji Ishitani
- Aira Public Health Center, Health Social Welfare and Environmental Department, Aira-Isa Regional Promotion Bureau
| | - Nobuyuki Nishi
- Kaseda Public Health Center, Health Social Welfare and Environmental Department, Nansatsu Regional Promotion Bureau
| | - Mitsuhiro Ootsubo
- Kagoshima Prefectural Institute for Environmental Research and Public Health
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9
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Tian H, Yu P, Chowell G, Li S, Wei J, Tian H, Lv W, Han Z, Yang J, Huang S, Zhou S, Brownstein JS, Wang J, Xu B. Severe Fever with Thrombocytopenia Syndrome Virus in Humans, Domesticated Animals, Ticks, and Mosquitoes, Shaanxi Province, China. Am J Trop Med Hyg 2017; 96:1346-1349. [PMID: 28719252 DOI: 10.4269/ajtmh.16-0333] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
AbstractThe first human infection with severe fever with thrombocytopenia syndrome virus (SFTSV) was detected in Shaanxi Province, China, in 2013, although the virus had been reported in 13 other provinces of China since 2010. We collected and analyzed a total of 4,011 samples, including 936 human serum samples, 155 animal serum samples, 895 ticks, 1,950 mosquitoes, 30 midges, and 20 sandflies. SFTSV antibodies were found in 44 human samples (4.7%) with no significant differences between males and females or across counties. The incidence rate of severe fever with thrombocytopenia syndrome was significantly higher among individuals 20-60 years of age. Moreover, SFTSV-specific antibodies were detected in goats (66.7%), cattle (13.2%), and dogs (15.0%), but not in pigs (0%). We detected the virus in Haemaphysalis concinna ticks with a prevalence rate of 21.3% (17/80 pools). All mosquito, midge, and sandfly samples were negative for SFTSV. These results support wide circulation of the virus in western China. Haemaphysalis concinna ticks may serve as a novel SFTSV vector, and the role of these ticks requires further investigation.
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Affiliation(s)
- Huaiyu Tian
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
| | - Pengbo Yu
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, China
| | - Gerardo Chowell
- School of Public Health, Georgia State University, Atlanta, Georgia.,Division of International Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, Maryland
| | - Shen Li
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, China
| | - Jing Wei
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, China
| | - Hui Tian
- Baoji Centre for Disease Control and Prevention, Baoji, China
| | - Wen Lv
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, China
| | - Zongqi Han
- Long County Centre for Disease Control and Prevention of Shaanxi Province, Baoji, China
| | - Jing Yang
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
| | - Shanqian Huang
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
| | - Sen Zhou
- Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing, China.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
| | - John S Brownstein
- Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing, China
| | - Jingjun Wang
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, China
| | - Bing Xu
- Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing, China.,State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
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10
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Li P, Tong ZD, Li KF, Tang A, Dai YX, Yan JB. Seroprevalence of severe fever with thrombocytopenia syndrome virus in China: A systematic review and meta-analysis. PLoS One 2017; 12:e0175592. [PMID: 28399161 PMCID: PMC5388504 DOI: 10.1371/journal.pone.0175592] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/28/2017] [Indexed: 02/04/2023] Open
Abstract
Objective Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by a novel bunyavirus-SFTSV. The seroprevalence of anti-SFTSV antibodies including immunoglobulin G (IgG) and immunoglobulin M (IgM), specific to SFTSV in the general population has been investigated in various epidemiological studies with inconsistent results. Here, we clarify this discrepancy and reach a more comprehensive result by mean of a meta-analysis. Methods All relevant articles were searched in the electronic databases (PubMed, Web of science, Embase, Chinese National Knowledge Infrastructure database, Chinese Wanfang database) up to November 2016. The pooled seroprevalence and 95% confidence intervals (95% CIs) were calculated by random- or fixed- model on the basis of heterogeneity. Results In total, 21 studies containing 23,848 blood samples from 7 provinces were included in this meta-analysis. The minimum and maximum reported seroprevalences of SFTSV among humans in China were 0.23% and 9.17%, respectively. The overall pooled seroprevalence of SFTSV antibodies was 4.3% (95%CI: 3.2%-5.5%). The pooled prevalence was 5.9% (95%CI: 4.7%-7.0%) in Zhejiang province, 4.9% (95%CI: 4.1–5.8%) in Anhui province, 3.9% (95%CI: 1.3%-6.4%) in Shandong province, and 0.7% (95%CI: 0.2%-1.1%) in Jiangsu province. Stratified by occupation, the pooled prevalence of farmer was 6.1% (95%CI: 3.4%-8.9%) and others (mainly are students) was 3.3% (95%CI: 2.4%-4.2%). Additionally, seroprevalence of SFTSV in people who lived in the same village with the patient were higher than that of people who lived in a different village. Seropositive rates in sampling years after 2012 were higher than that before 2012. The prevalence of SFTSV did not differ by age or gender. Sensitive analysis by omitting one study at a time indicated the results of the pooled seroprevalence were robust. Conclusions Seroprevalence of SFTSV among healthy population in central and eastern China is high. Surveillance efforts on mild or asymptomatic infections among endemic persons are needed.
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Affiliation(s)
- Peng Li
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
| | - Zhen-Dong Tong
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- * E-mail: (ZDT); (JBY)
| | - Ke-Feng Li
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
| | - An Tang
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
| | - Ya-Xin Dai
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
| | - Jian-Bo Yan
- Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang, P.R. China
- * E-mail: (ZDT); (JBY)
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11
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Jia Z, Wu X, Wang L, Li X, Dai X, Liang M, Cao S, Kong Y, Liu J, Li Y, Wang J. Identification of a candidate standard strain of severe fever with thrombocytopenia syndrome virus for vaccine quality control in China using a cross-neutralization assay. Biologicals 2017; 46:92-98. [PMID: 28173977 DOI: 10.1016/j.biologicals.2017.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/20/2017] [Accepted: 01/24/2017] [Indexed: 10/20/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is caused by a phlebovirus of the Bunyaviridae family, which is designated as SFTS virus (SFTSV). To our knowledge, no efficient SFTSV vaccine exists. Here, we report the identification of a standard virus strain for the eight major SFTSV strains circulating in China for use in evaluating the SFTSV vaccine. Rabbits were immunized with the SFTSV strains and the cross-neutralization capacities of SFTSV anti-sera were determined in microculture cytopathic effect (CPE)-inhibition assays. The mean cross-neutralization capacity of the eight SFTSV anti-sera ranged from 62.4 to 142.6%, compared to autologous strains. The HB29 strain demonstrated strong cross-reactivity with heterologous antibodies, and 33 serum samples from SFTS patients efficiently neutralized HB29, suggesting its broad cross-reactivity. In addition, HB29 demonstrated good replication in Vero and MRC-5 cells (8.0 and 6.0 lg 50% cell culture-infectious dose/mL, respectively) and significant CPE, which satisfied the requirements for a standard virus strain. The HB29 isolate was proven identical to the reported HB29 strain by DNA sequencing, and showed high homology in the S segments with other SFTSV strains (94.8-99.7%). Our results suggest that HB29 may be the best candidate standard strain for use in SFTS vaccine development in China.
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Affiliation(s)
- Zheng Jia
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Xiaohong Wu
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Ling Wang
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Xiuling Li
- Beijing Institute of Biological Products Co., Ltd., Beijing 101111, PR China
| | - Xinxian Dai
- Beijing Institute of Biological Products Co., Ltd., Beijing 101111, PR China
| | - Mifang Liang
- Key Laboratory for Medical Virology, NHFPC, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, PR China
| | - Shouchun Cao
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Yan Kong
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Jingjing Liu
- National Institutes for Food and Drug Control, Beijing 100050, PR China
| | - Yuhua Li
- National Institutes for Food and Drug Control, Beijing 100050, PR China.
| | - Junzhi Wang
- National Institutes for Food and Drug Control, Beijing 100050, PR China.
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12
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Kim KH, Ko MK, Kim N, Kim HH, Yi J. Seroprevalence of Severe Fever with Thrombocytopenia Syndrome in Southeastern Korea, 2015. J Korean Med Sci 2017; 32:29-32. [PMID: 27914128 PMCID: PMC5143294 DOI: 10.3346/jkms.2017.32.1.29] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 09/11/2016] [Indexed: 11/20/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease characterized by fever, thrombocytopenia and diarrhea. SFTS was firstly reported in Korea in 2013 but its seroprevalence in the country has yet to be investigated. Here, we investigate the seroprevalence of SFTS in a Korean population. A cross-sectional study was conducted on patients who had their sera tested for various reasons at a tertiary university hospital on particular days in May 2015. This study was conducted in a tertiary hospital in southeastern Korea. Total antibodies including immunoglobulin G (IgG) and immunoglobulin M (IgM), specific to SFTS virus (SFTSV) in serum samples were detected by a double-antigen sandwich enzyme-linked immunosorbent assay (ELISA). A total of 1,069 serum samples were tested. Median age was 59 years (range 12-96 years), and 51.5% were male. Overall, 22 patients (2.1%) were tested positive for anti-SFTSV antibodies. The SFTS seroprevalence increased significantly with age (P = 0.034). The seropositive rate of rural area was higher than that of urban area (7.7% vs. 1.9%, P = 0.040). Seropositive rates were not significantly different among underlying diseases. None of the antibody-positive patients showed typical symptoms or laboratory findings of SFTS at the time of sample collection. Results of real-time reverse transcription polymerase chain reaction (RT-PCR) were negative for all the seropositive patients. Our study shows 2.1% SFTS seroprevalence among the patients visiting a tertiary hospital in Korea. Seroprevalence is higher in older and rural population.
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Affiliation(s)
- Kye Hyung Kim
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
- Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Mee Kyung Ko
- Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Namhee Kim
- Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Hyung Hoi Kim
- Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Jongyoun Yi
- Department of Laboratory Medicine, Pusan National University School of Medicine, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
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13
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Tabara K, Fujita H, Hirata A, Hayasaka D. Investigation of Severe Fever with Thrombocytopenia Syndrome Virus Antibody among Domestic Bovines Transported to Slaughterhouse in Shimane Prefecture, Japan. Jpn J Infect Dis 2016; 69:445-7. [DOI: 10.7883/yoken.jjid.2015.624] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Kenji Tabara
- Shimane Prefectural Laboratory of Meat Hygiene Inspection Station
| | | | - Atau Hirata
- Shimane Prefectural Laboratory of Meat Hygiene Inspection Station
| | - Daisuke Hayasaka
- Institute of Tropical Medicine, Nagasaki University
- Leading graduate school program, Nagasaki University
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