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Tran XC, Kim SH, Lee JE, Kim SH, Kang SY, Binh ND, Duc PV, Phuong PTK, Thao NTP, Lee W, Bae JY, Park MS, Kim M, Yoo JR, Heo ST, An KH, Kim JM, Cho NH, Kee SH, Lee KH. Serological Evidence of Severe Fever with Thrombocytopenia Syndrome Virus and IgM Positivity Were Identified in Healthy Residents in Vietnam. Viruses 2022; 14:v14102280. [PMID: 36298836 PMCID: PMC9607213 DOI: 10.3390/v14102280] [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: 09/15/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 11/18/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS), an emerging tick-borne viral disease, is prevalent in East Asia and has also been reported in Southeast Asia since 2019. SFTS patients in Vietnam were first reported in 2019. However, the seroprevalence of severe fever with thrombocytopenia syndrome virus (SFTSV) in Vietnam has not been reported. To investigate the seroprevalence of SFTSV in Vietnam, we collected serum samples from 714 healthy residents in Thua Thien Hue and Quang Nam Province, Vietnam, and the seroprevalence of SFTSV was assessed using immunofluorescence antibody assay (IFA), Enzyme-Linked Immunosorbent Assays (ELISAs) and the 50% focus reduction neutralization test (FRNT50) assay. The seroprevalence of anti-SFTSV IgM or IgG was observed to be 3.64% (26/714), high IgM positivity was >80 (0.28%, 2/714) and the titer of neutralizing antibodies against SFTSV ranged from 15.5 to 55.9. In Pakistan, SFTSV infection confirmed using a microneutralization test (MNT) assay (prevalence is 2.5%) and ELISAs showed a high seroprevalence (46.7%) of SFTSV. Hence, the seroprevalence rate in Vietnam is similar to that in Pakistan and the number of SFTS patients could increase in Vietnam.
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Affiliation(s)
- Xuan Chuong Tran
- Department of Infectious Diseases, Hue University of Medicine and Pharmacy, Hue 530000, Vietnam
| | - Sung Hye Kim
- Department of Microbiology and Environmental Biology & Medical Parasitology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Jeong-Eun Lee
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea
| | - So-Hee Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Su Yeon Kang
- Department of Microbiology and Environmental Biology & Medical Parasitology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Nguyen D. Binh
- Department of Infectious Diseases, Hue University of Medicine and Pharmacy, Hue 530000, Vietnam
| | - Pham V. Duc
- Department of Infectious Diseases, Hue University of Medicine and Pharmacy, Hue 530000, Vietnam
| | - Phan T. K. Phuong
- Department of Infectious Diseases, Hue University of Medicine and Pharmacy, Hue 530000, Vietnam
| | - Nguyen T. P. Thao
- Department of Infectious Diseases, Hue University of Medicine and Pharmacy, Hue 530000, Vietnam
| | - Wonwoo Lee
- Department of Microbiology and Environmental Biology & Medical Parasitology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Joon-Yong Bae
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea
| | - Man-Seong Park
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea
| | - Misun Kim
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju 64231, Korea
| | - Jeong Rae Yoo
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju 64231, Korea
| | - Sang Taek Heo
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju 64231, Korea
| | - Kyeong Ho An
- Department of Microbiology, Graduate School of Dongguk University, Seoul 04620, Korea
| | - Jung Mogg Kim
- Department of Microbiology and Environmental Biology & Medical Parasitology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Nam-Hyuk Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea
- Correspondence: (N.-H.C.); (S.-H.K.); (K.H.L.)
| | - Sun-Ho Kee
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea
- Correspondence: (N.-H.C.); (S.-H.K.); (K.H.L.)
| | - Keun Hwa Lee
- Department of Microbiology and Environmental Biology & Medical Parasitology, Hanyang University College of Medicine, Seoul 04763, Korea
- Correspondence: (N.-H.C.); (S.-H.K.); (K.H.L.)
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Lee JW, Won YJ, Kang LH, Lee SG, Park SW, Paik SY. Development of a real-time loop-mediated isothermal amplification method for the detection of severe fever with thrombocytopenia syndrome virus. J Microbiol 2020; 58:711-715. [PMID: 32424580 PMCID: PMC7232587 DOI: 10.1007/s12275-020-0109-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is being reported annually in South Korea since its first detection there in 2010. The causal agent is a negative-strand RNA virus 80–100 nm in diameter. It causes fever, thrombocytopenia, leukocytopenia, gastrointestinal symptoms, and neural symptoms. The mortality rate of SFTS was 32.6% among 172 cases reported from 2012 to 2015 in South Korea. Thus, is necessary to develop an effective diagnostic method that selectively identifies the isolates circulating in South Korea. The real-time reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay is a simple, rapid, and sensitive approach for molecular diagnosis. Here, we designed novel primers for this assay and found that the technique had very high specificity, sensitivity, and efficiency. This real-time RT-LAMP approach using the novel primers developed herein can be applied for early diagnosis of SFTSV strains in South Korea to reduce the mortality rate of SFTS.
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Affiliation(s)
- Jae Woong Lee
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Yu-Jung Won
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Lae Hyung Kang
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Sung-Geun Lee
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Seung-Won Park
- Department of Biotechnology, Daegu Catholic University, Gyeongsan-si, 38430, Republic of Korea
| | - Soon-Young Paik
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
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3
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Vandegrift KJ, Kapoor A. The Ecology of New Constituents of the Tick Virome and Their Relevance to Public Health. Viruses 2019; 11:v11060529. [PMID: 31181599 PMCID: PMC6630940 DOI: 10.3390/v11060529] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/07/2019] [Accepted: 05/29/2019] [Indexed: 01/19/2023] Open
Abstract
Ticks are vectors of several pathogens that can be transmitted to humans and their geographic ranges are expanding. The exposure of ticks to new hosts in a rapidly changing environment is likely to further increase the prevalence and diversity of tick-borne diseases. Although ticks are known to transmit bacteria and viruses, most studies of tick-borne disease have focused upon Lyme disease, which is caused by infection with Borrelia burgdorferi. Until recently, ticks were considered as the vectors of a few viruses that can infect humans and animals, such as Powassan, Tick-Borne Encephalitis and Crimean–Congo hemorrhagic fever viruses. Interestingly, however, several new studies undertaken to reveal the etiology of unknown human febrile illnesses, or to describe the virome of ticks collected in different countries, have uncovered a plethora of novel viruses in ticks. Here, we compared the virome compositions of ticks from different countries and our analysis indicates that the global tick virome is dominated by RNA viruses. Comparative phylogenetic analyses of tick viruses from these different countries reveals distinct geographical clustering of the new tick viruses. Some of these new tick RNA viruses (notably severe fever with thrombocytopenia syndrome virus and Heartland virus) were found to be associated with serious human diseases. Their relevance to public health remains unknown. It is plausible that most of these newly identified tick viruses are of endogenous origin or are restricted in their transmission potential, but the efforts to identify new tick viruses should continue. Indeed, future research aimed at defining the origin, the ecology and the spillover potential of this novel viral biodiversity will be critical to understand the relevance to public health.
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Affiliation(s)
- Kurt J Vandegrift
- The Center for Infectious Disease Dynamics, Department of Biology, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Amit Kapoor
- Center for Vaccines and Immunity, Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA.
- Department of Pediatrics, Ohio State University, Columbus, OH 43205, USA.
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Robles NJC, Han HJ, Park SJ, Choi YK. Epidemiology of severe fever and thrombocytopenia syndrome virus infection and the need for therapeutics for the prevention. Clin Exp Vaccine Res 2018; 7:43-50. [PMID: 29399579 PMCID: PMC5795044 DOI: 10.7774/cevr.2018.7.1.43] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 01/06/2018] [Accepted: 01/13/2018] [Indexed: 01/13/2023] Open
Abstract
Over the past ten years there has been a marked increase in cases of severe fever and thrombocytopenia syndrome in East Asia. This tick-borne hemorrhagic fever presents along with clinical signs including high fever and leukopenia. In addition to humans, the virus has also been detected with shared genetic homology in farm animals including goats, cattle, horses, and pigs. Furthermore, several genotypes of severe fever and thrombocytopenia syndrome virus (SFTSV) are currently co-circulating between humans and animals. In China, where the virus was first detected in rural areas in 2009, the SFTSV mortality rate has been reported to be as 6% and higher than 30%, especially in immuno-compromised patients. Moreover, this virus has been isolated in neighbor countries including Japan and South Korea where the fatality rates in 2015 were more than 30% in both countries. In this review, we comprehensively summarize the virology, genotypes, pathogenesis, and epidemiology of SFTSV infection in humans and animals. Currently, a collaborative global approach against SFTSV infection is being undertaken; however, the need for continuous disease surveillance and production of an effective vaccine is imperative as this virus may lead to an epidemic of irreversible status in both humans and animals.
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Affiliation(s)
- Norbert John C Robles
- Department of Microbiology, College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea.,Zoonotic Infectious Diseases Research Center, Chungbuk National University, Cheongju, Korea.,College of Veterinary Medicine and Agricultural Sciences, De La Salle Araneta University, Malabon City, Philippines
| | - Hae Jung Han
- Department of Microbiology, College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea.,Research & Development Center, Green Cross WellBeing Corporation, Seongnam, Korea
| | - Su-Jin Park
- Department of Microbiology, College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea.,Zoonotic Infectious Diseases Research Center, Chungbuk National University, Cheongju, Korea
| | - Young Ki Choi
- Department of Microbiology, College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea.,Zoonotic Infectious Diseases Research Center, Chungbuk National University, Cheongju, Korea
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5
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Sizikova TE, Lebedev VN, Pantukhov VB, Borisevich SV. Severe fever with thrombocytopenia syndrome: the disease, caused by the novel phlebovirus. Vopr Virusol 2017; 62:60-65. [PMID: 36494929 DOI: 10.18821/0507-4088-2017-62-2-60-65] [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: 01/20/2020] [Indexed: 12/13/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by a new virus (SFTS virus) reported to be endemic to central and northeastern parts of China. SFTS virus, which is classified into the genus Phlebovirus (the Bunyaviridae family), is suspected to be a tick-borne virus owing to evidence in two species of ticks: Haemaphysalis longicornis and Rhipicephalus microplus. SFTS virus is detected among many species of domestic animals in China. The clinical symptoms of SFTS include fever, thrombocytopenia, leucocytopenia, gastrointestinal symptoms, neural symptoms, bleeding tendency. The fatality rate of SFTS is 6-30%. Person-to-person transmission of SFTS virus is possible through blood contact. Clinical and epidemiological studies of SFTS, the cases of SFTS outside China, person-to-person transmission of SFTS virus, evolutionary and molecular analysis of the emergent SFTS virus, and risk assessment of human infection with a novel phlebovirus are considered in this review.
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6
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He M, Wang J, Chen L, Liu J, Zeng P. The Impact of Emerging Infectious Diseases on Chinese Blood Safety. Transfus Med Rev 2017; 31:94-101. [PMID: 27923518 PMCID: PMC7126663 DOI: 10.1016/j.tmrv.2016.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/19/2016] [Accepted: 10/24/2016] [Indexed: 12/16/2022]
Abstract
Emerging infectious diseases (EIDs) have always been one of the major threats to public health. Although the implementation of mandatory testing for 4 classical transfusion-transmitted infectious-human immunodeficiency virus, hepatitis B virus, hepatitis C virus, and syphilis-has reduced the transfusion risk of these pathogens, the potential threat of various EID agents and their constantly evolving variants to blood safety in China is not fully understood. This review presents 9 representative EID agents that are autochthonous and epidemic nationally or regionally in China. The epidemiologic status and distribution of these EID agents among donors and/or healthy populations are summarized. The potential risks of these EID agents to blood safety are discussed. The review also explores strategies to strengthen hemovigilance systems and studies to further evaluate the impact of EID agents on blood safety.
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Affiliation(s)
- Miao He
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Jingxing Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Limin Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Jing Liu
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Peibin Zeng
- West China School of Public Health, Sichuan University, Chengdu, Sichuan, China.
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7
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Matsuno K, Orba Y, Maede-White K, Scott D, Feldmann F, Liang M, Ebihara H. Animal Models of Emerging Tick-Borne Phleboviruses: Determining Target Cells in a Lethal Model of SFTSV Infection. Front Microbiol 2017; 8:104. [PMID: 28194148 PMCID: PMC5276813 DOI: 10.3389/fmicb.2017.00104] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/13/2017] [Indexed: 12/18/2022] Open
Abstract
The pathogenesis of clinical manifestations caused by newly emerging tick-borne phleboviruses [i.e., Severe fever with thrombocytopenia syndrome virus (SFTSV) and Heartland virus (HRTV)], such as severe thrombocytopenia and lymphocytopenia, are not yet fully understood. In the present study, to establish an animal model mimicking the profile of fatal human cases, we examined the susceptibilities of adult mice from 12 strains, aged mice from two strains, and cynomolgus macaques to SFTSV and/or HRTV infections. However, none of these immunocompetent animals developed lethal diseases after infection with SFTSV or HRTV. Thus, we tested a lethal animal model of SFTSV infection using interferon-α/β receptor knock-out (IFNAR-/-) mice to identify the target cell(s) of virus infection, as well as lesions that are potentially associated with hematological changes. IbaI-positive macrophages and Pax5-positive immature B cells overlapped with SFTSV-positive cells in the spleen and lymph nodes of IFNAR-/- mice, and IbaI-SFTSV-double positive cells were also observed in the liver and kidney, thereby suggesting crucial roles for macrophages in the pathogenesis of SFTSV infection in mice. In the mandibular lymph nodes and spleens of infected mice, we observed extensive necrosis comprising B220-positive B cells, which may be associated with severe lymphocytopenia. The results of this study suggest a resemblance between the IFNAR-/- mouse model and lethal infections in humans, as well as roles for multiple cells during pathogenesis in mice.
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Affiliation(s)
- Keita Matsuno
- Molecular Virology and Host-Pathogen Interaction Unit, Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rocky Mountain Laboratories, HamiltonMT, USA; Laboratory of Microbiology, Graduate School of Veterinary Medicine, Hokkaido UniversitySapporo, Japan; Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education, Hokkaido UniversitySapporo, Japan
| | - Yasuko Orba
- Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University Sapporo, Japan
| | - Kimberly Maede-White
- Rocky Mountain Veterinary Branch, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton MT, USA
| | - Dana Scott
- Rocky Mountain Veterinary Branch, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton MT, USA
| | - Friederike Feldmann
- Rocky Mountain Veterinary Branch, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton MT, USA
| | - Mifang Liang
- NHFPC Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, China CDC Beijing, China
| | - Hideki Ebihara
- Molecular Virology and Host-Pathogen Interaction Unit, Laboratory of Virology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rocky Mountain Laboratories, HamiltonMT, USA; Department of Molecular Medicine, Mayo Clinic, RochesterMN, USA
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8
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Murray JV, Jansen CC, De Barro P. Risk Associated with the Release of Wolbachia-Infected Aedes aegypti Mosquitoes into the Environment in an Effort to Control Dengue. Front Public Health 2016; 4:43. [PMID: 27047911 PMCID: PMC4802996 DOI: 10.3389/fpubh.2016.00043] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/04/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND In an effort to eliminate dengue, a successful technology was developed with the stable introduction of the obligate intracellular bacteria Wolbachia pipientis into the mosquito Aedes aegypti to reduce its ability to transmit dengue fever due to life shortening and inhibition of viral replication effects. An analysis of risk was required before considering release of the modified mosquito into the environment. METHODS Expert knowledge and a risk assessment framework were used to identify risk associated with the release of the modified mosquito. Individual and group expert elicitation was performed to identify potential hazards. A Bayesian network (BN) was developed to capture the relationship between hazards and the likelihood of events occurring. Risk was calculated from the expert likelihood estimates populating the BN and the consequence estimates elicited from experts. RESULTS The risk model for "Don't Achieve Release" provided an estimated 46% likelihood that the release would not occur by a nominated time but generated an overall risk rating of very low. The ability to obtain compliance had the greatest influence on the likelihood of release occurring. The risk model for "Cause More Harm" provided a 12.5% likelihood that more harm would result from the release, but the overall risk was considered negligible. The efficacy of mosquito management had the most influence, with the perception that the threat of dengue fever had been eliminated, resulting in less household mosquito control, and was scored as the highest ranked individual hazard (albeit low risk). CONCLUSIONS The risk analysis was designed to incorporate the interacting complexity of hazards that may affect the release of the technology into the environment. The risk analysis was a small, but important, implementation phase in the success of this innovative research introducing a new technology to combat dengue transmission in the environment.
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Affiliation(s)
| | - Cassie C Jansen
- CSIRO, Brisbane, QLD, Australia; Metro North Public Health Unit, Queensland Health, Brisbane, QLD, Australia
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Liu K, Zhou H, Sun RX, Yao HW, Li Y, Wang LP, Di Mu, Li XL, Yang Y, Gray GC, Cui N, Yin WW, Fang LQ, Yu HJ, Cao WC. A national assessment of the epidemiology of severe fever with thrombocytopenia syndrome, China. Sci Rep 2015; 5:9679. [PMID: 25902910 PMCID: PMC4407178 DOI: 10.1038/srep09679] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/12/2015] [Indexed: 01/18/2023] Open
Abstract
First discovered in rural areas of middle-eastern China in 2009, severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne zoonosis affecting hundreds of cases reported in China each year. Using the national surveillance data from 2010 to 2013, we conducted this retrospective epidemiological study and risk assessment of SFTS in China. We found that the incidence of SFTS and its epidemic areas are continuing to grow, but the case fatality rate (CFR) has steadily decreased. SFTS most commonly affected elderly farmers who acquired infection between May and July in middle-eastern China. However, other epidemiological characteristics such as incidence, sex ratio, CFR, and seasonality differ substantially across the affected provinces, which seem to be consistent with local agricultural activities and the seasonal abundance of ticks. Spatial scan statistics detected three hot spots of SFTS that accounted for 69.1% of SFTS cases in China. There was a strong association of SFTS incidence with temporal changes in the climate within the clusters. Multivariate modeling identified climate conditions, elevation, forest coverage, cattle density, and the presence of Haemaphysalis longicornis ticks as independent risk factors in the distribution of SFTS, based on which a predicted risk map of the disease was derived.
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Affiliation(s)
- Kun Liu
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China
| | - Hang Zhou
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Ruo-Xi Sun
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China.,Anhui Medical University, Hefei, 230032, P. R. China
| | - Hong-Wu Yao
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China
| | - Yu Li
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Li-Ping Wang
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Di Mu
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Xin-Lou Li
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China
| | - Yang Yang
- Department of Biostatistics, College of Public Health and Health Professions, and Emerging Pathogens Institute, University of Florida, 32311, Florida, USA
| | - Gregory C Gray
- Duke University School of Medicine, Durham, 27710, North Carolina, USA
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang, 464000, P.R. China
| | - Wen-Wu Yin
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Li-Qun Fang
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China
| | - Hong-Jie Yu
- Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Centre for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Wu-Chun Cao
- The State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, P. R. China
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10
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Lei XY, Liu MM, Yu XJ. Severe fever with thrombocytopenia syndrome and its pathogen SFTSV. Microbes Infect 2015; 17:149-54. [DOI: 10.1016/j.micinf.2014.12.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/01/2014] [Accepted: 12/02/2014] [Indexed: 12/20/2022]
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11
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Liu S, Chai C, Wang C, Amer S, Lv H, He H, Sun J, Lin J. Systematic review of severe fever with thrombocytopenia syndrome: virology, epidemiology, and clinical characteristics. Rev Med Virol 2013; 24:90-102. [PMID: 24310908 PMCID: PMC4237196 DOI: 10.1002/rmv.1776] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 10/19/2013] [Accepted: 11/04/2013] [Indexed: 01/12/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) was firstly discovered in China in 2010, followed by several reports from many other countries worldwide. SFTS virus (SFTSV) has been identified as the causative agent of the disease and has been recognized as a public health threat. This novel Bunyavirus belongs to the Phlebovirus genus in the family Bunyaviridae. This review also describes the different aspects of virology, pathogenesis, epidemiology, and clinical symptoms on the basis of the published article surveillance data and phylogenetic analyses of viral sequences of large, medium, and small segments retrieved from database using mega 5.05, simplot 3.5.1, network 4.611, and epi information system 3.5.3 software. SFTS presents with fever, thrombocytopenia, leukocytopenia, and considerable changes in several serum biomarkers. The disease has 10 ∼ 15% mortality rate, commonly because of multiorgan dysfunction. SFTSV is mainly reported in the rural areas of Central and North-Eastern China, with seasonal occurrence from May to September, mainly targeting those of ≥50 years of age. A wide range of domesticated animals, including sheep, goats, cattle, pigs, dogs, and chickens have been proven seropositive for SFTSV. Ticks, especially Haemaphysalis longicornis, are suspected to be the potential vector, which have a broad animal host range in the world. More studies are needed to elucidate the vector–animal–human ecological cycle, the pathogenic mechanisms in high level animal models and vaccine development. © 2013 The Authors. Reviews in Medical Virology published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Shelan Liu
- Department of Infectious Diseases, Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
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12
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The pathogenesis of severe fever with thrombocytopenia syndrome virus infection in alpha/beta interferon knockout mice: insights into the pathologic mechanisms of a new viral hemorrhagic fever. J Virol 2013; 88:1781-6. [PMID: 24257618 DOI: 10.1128/jvi.02277-13] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a newly discovered Phlebovirus causing an emerging hemorrhagic fever in East Asia, with reported case fatality rates up to 30%. Despite the high case fatality rate and large number of persons at risk of infection, the pathobiology of the disease is unknown, and no effective animal model has been available for investigating its pathogenesis. We have studied mice and hamsters as potential small-animal models of SFTSV infection following subcutaneous, intraperitoneal, or intracerebral inoculation. Animal tissues were processed for viral load determination, histopathology, immunohistochemistry, and confocal microscopic studies. We found that immunocompetent adult mice and hamsters did not become ill after SFTSV infection. However, alpha/beta interferon receptor knockout (IFNAR(-/-)) mice were highly susceptible to SFTSV infection, and all mice died within 3 to 4 days after subcutaneous inoculation of 10(6) focus-forming units of SFTSV. Histologic examination of tissues of IFNAR(-/-) mice infected with SFTSV showed no detectable lesions. In contrast, by immunohistochemistry virus antigen was found in liver, intestine, kidney, spleen, lymphoid tissue, and brain, but not in the lungs. Mesenteric lymph nodes and spleen were the most heavily infected tissues. Quantitative reverse transcription-PCR (RT-PCR) confirmed the presence of virus in these tissues. Confocal microscopy showed that SFTSV colocalized with reticular cells but did not colocalize with dendritic cells, monocytes/macrophages, neutrophils, or endothelium. Our results indicate that SFTSV multiplied in all organs except for lungs and that mesenteric lymph nodes and spleen were the most heavily infected tissues. The major target cells of SFTSV appear to be reticular cells in lymphoid tissues of intestine and spleen.
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