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Sun Y, Zhang D, Liu H, Ruan C, Dou X, Ren Z, Ge Z, Du Z, Jin H, Li D, Xue H, Liu W, Chen Z, Wang Q. The first reported cases of severe fever with thrombocytopenia syndrome virus from domestic sick camel to humans in China. Emerg Microbes Infect 2024; 13:2309990. [PMID: 38269573 PMCID: PMC10860415 DOI: 10.1080/22221751.2024.2309990] [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: 11/15/2023] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease with an increasing annual incidence rate. In this case report, we presented two patients infected with the SFTS virus, suggesting a potential direct transmission route from camels to humans through blood contact. Both patients developed symptoms after engaging in the slaughtering of one sick camel, while their family members living in the same environment or co-diners remained unaffected. Subsequent detection revealed a high viral load of SFTS virus, reaching 1010 viral RNA copies/ml, in the sample obtained from the sick camel. Metagenomic sequencing did not identify any other pathogens. The SFTS virus was successfully isolated from both patient and camel samples. The complete nucleotide sequences obtained from the infected patients demonstrated a remarkable 100% similarity to those found in the camel, and genetic evolution analysis classified the virus as genotype A. Additionally, partial sequences of the SFTS virus were identified in ticks captured from the camel rearing environment, however, these sequences showed only 95.9% similarity to those found in camel and humans. Furthermore, immunoglobulin M and immunoglobulin G antibodies were detected in serum samples collected from the patient. Our findings provide evidence that camel may serve as a competent reservoir for transmitting the SFTS virus to humans. Further in vitro investigations into SFTS virus infections in large animals are warranted to understand their role in viral maintenance and transmission.
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Affiliation(s)
- Yulan Sun
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Daitao Zhang
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Hui Liu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Chunlai Ruan
- Beijing Pinggu District Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Xiangfeng Dou
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Zhenyong Ren
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Ziruo Ge
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Zhizhong Du
- Beijing Pinggu District Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Haoyuan Jin
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Dan Li
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Hui Xue
- Beijing Pinggu District Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
| | - Zhihai Chen
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Quanyi Wang
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, People’s Republic of China
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Tao M, Liu Y, Ling F, Ren J, Zhang R, Shi X, Guo S, Jiang J, Sun J. Factors Associated With the Spatial Distribution of Severe Fever With Thrombocytopenia Syndrome in Zhejiang Province, China: Risk Analysis Based on Maximum Entropy. JMIR Public Health Surveill 2024; 10:e46070. [PMID: 39104047 PMCID: PMC11310739 DOI: 10.2196/46070] [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: 01/29/2023] [Revised: 05/05/2024] [Accepted: 05/23/2024] [Indexed: 08/07/2024] Open
Abstract
Background Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease that was first identified in mainland China in 2009 and has been reported in Zhejiang Province, China, since 2011. However, few studies have focused on the association between ticks, host animals, and SFTS. Objective In this study, we analyzed the influence of meteorological and environmental factors as well as the influence of ticks and host animals on SFTS. This can serve as a foundational basis for the development of strategic policies aimed at the prevention and control of SFTS. Methods Data on SFTS incidence, tick density, cattle density, and meteorological and environmental factors were collected and analyzed using a maximum entropy-based model. Results As of December 2019, 463 laboratory-confirmed SFTS cases were reported in Zhejiang Province. We found that the density of ticks, precipitation in the wettest month, average temperature, elevation, and the normalized difference vegetation index were significantly associated with SFTS spatial distribution. The niche model fitted accurately with good performance in predicting the potential risk areas of SFTS (the average test area under the receiver operating characteristic curve for the replicate runs was 0.803 and the SD was 0.013). The risk of SFTS occurrence increased with an increase in tick density, and the response curve indicated that the risk was greater than 0.5 when tick density exceeded 1.4. The risk of SFTS occurrence decreased with increased precipitation in the wettest month, and the risk was less than 0.5 when precipitation exceeded 224.4 mm. The relationship between elevation and SFTS occurrence showed a reverse V shape, and the risk peaked at approximately 400 m. Conclusions Tick density, precipitation, and elevation were dominant influencing factors for SFTS, and comprehensive intervention measures should be adjusted according to these factors to reduce SFTS incidence in Zhejiang Province.
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Affiliation(s)
- Mingyong Tao
- Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Ying Liu
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Feng Ling
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Jiangping Ren
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Rong Zhang
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Xuguang Shi
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Song Guo
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Jianmin Jiang
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Jimin Sun
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
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Park D, Kim KW, Kim YI, Casel MAB, Jang H, Kwon W, Kim K, Kim SM, N MPA, Kim EH, Jang H, Hwang S, Yun SM, Lee JY, Jeong HW, Park SJ, Choi YK. Deciphering the evolutionary landscape of severe fever with thrombocytopenia syndrome virus across East Asia. Virus Evol 2024; 10:veae054. [PMID: 39119138 PMCID: PMC11306926 DOI: 10.1093/ve/veae054] [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: 05/02/2024] [Revised: 06/24/2024] [Accepted: 07/18/2024] [Indexed: 08/10/2024] Open
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) poses a significant public health challenge in East Asia, necessitating a deeper understanding of its evolutionary dynamics to effectively manage its spread and pathogenicity. This study provides a comprehensive analysis of the genetic diversity, recombination patterns, and selection pressures across the SFTSV genome, utilizing an extensive dataset of 2041 sequences from various hosts and regions up to November 2023. Employing maximum likelihood and Bayesian evolutionary analysis by sampling trees (BEAST), we elucidated the phylogenetic relationships among nine distinct SFTSV genotypes (A, B1, B2, B3, B4, C, D, E, and F), revealing intricate patterns of viral evolution and genotype distribution across China, South Korea, and Japan. Furthermore, our analysis identified 34 potential reassortments, underscoring a dynamic genetic interplay among SFTSV strains. Genetic recombination was observed most frequently in the large segment and least in the small segment, with notable recombination hotspots characterized by stem-loop hairpin structures, indicative of a structural propensity for genetic recombination. Additionally, selection pressure analysis on critical viral genes indicated a predominant trend of negative selection, with specific sites within the RNA-dependent RNA polymerase and glycoprotein genes showing positive selection. These sites suggest evolutionary adaptations to host immune responses and environmental pressures. This study sheds light on the intricate evolutionary mechanisms shaping SFTSV, offering insights into its adaptive strategies and potential implications for vaccine development and therapeutic interventions.
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Affiliation(s)
- Dongbin Park
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Kwan Woo Kim
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Young-Il Kim
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Mark Anthony B Casel
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Hyunwoo Jang
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Woohyun Kwon
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Kanghee Kim
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Se-Mi Kim
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Monford Paul Abishek N
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Eun-Ha Kim
- Virus Research Resource Center, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Hobin Jang
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Suhee Hwang
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Seok-Min Yun
- Center for Emerging Virus Research, National Institute of Infectious Diseases, Korea National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Joo-Yeon Lee
- Center for Emerging Virus Research, National Institute of Infectious Diseases, Korea National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Hye Won Jeong
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Su-Jin Park
- Divison of Life Science, Research Institute of Molecular Alchemy (RIMA), Gyeongsang National University, Jinju, Republic of Korea
| | - Young Ki Choi
- Center for Study of Emerging and Re‐emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
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Hu LF, Bian TT, Chen Q, Liu MY, Li JJ, Kong QX, Zhang JK, Wu J, Cheng J, Yu R, Qiu YQ, Gao YF, Chen GS, Ye Y, Wu T, Li JB. Viral shedding pattern of severe fever with thrombocytopenia syndrome virus in severely ill patients: A prospective, Multicenter cohort study. Heliyon 2024; 10:e33611. [PMID: 39027598 PMCID: PMC11255444 DOI: 10.1016/j.heliyon.2024.e33611] [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: 02/14/2024] [Revised: 06/20/2024] [Accepted: 06/24/2024] [Indexed: 07/20/2024] Open
Abstract
Background Severe fever with thrombocytopenia syndrome (SFTS) is spreading rapidly in Asia. The pathway of SFTS virus shedding from patient and specific use of personal protective equipments (PPEs) against viral transmission have rarely been reported. The study was to determine SFTS virus (SFTSV) shedding pattern from the respiratory, digestive and urinary tract to outside in patients. Methods: Patients were divided into mild and severe groups in three sentinel hospitals for SFTS in Anhui province from April 2020 to October 2022. SFTSV level from blood, throat swabs, fecal/anal swabs, urine and bedside environment swabs of SFTS patients were detected by qRT-PCR. Specific PPEs were applied in healthcare workers contacting with the patients who had oropharyngeal virus shedding and hemorrhagic signs. Results A total of 189 SFTSV-confirmed patients were included in the study, 54 patients died (case fatality rate, 28.57 %). Positive SFTSV in throat swabs (T-SFTSV), fecal/anal swabs (F-SFTSV) and urine (U-SFTSV) were detected in 121 (64.02 %), 91 (48.15 %) and 65 (34.4 %) severely ill patients, respectively. The levels of T-SFTSV, F-SFTSV and U-SFTSV were positively correlated with the load of SFTSV in blood. We firstly revealed that SFTSV positive rate of throat swabs were correlated with occurrence of pneumonia and case fatality rate of patients (P < 0.0001). Specific precaution measures were applied by healthcare workers in participating cardiopulmonary resuscitation and orotracheal intubation for severely ill patients with positive T-SFTSV, no event of SFTSV human-to-human transmission occurred after application of effective PPEs. Conclusions Our research demonstrated SFTSV could shed out from blood, oropharynx, feces and urine in severely ill patients. The excretion of SFTSV from these parts was positively correlated with viral load in the blood. Effective prevention measures against SFTSV human-to-human transmission are needed.
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Affiliation(s)
- Li-Fen Hu
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
| | - Ting-Ting Bian
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Qiang Chen
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Meng-Yu Liu
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jia-Jia Li
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
| | - Qin-Xiang Kong
- Department of Infectious Diseases, Chaohu Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jian-Kang Zhang
- Department of Infectious Diseases, Lu'an People's Hospital, Jin'an District, Lu'an, China
| | - Jin Wu
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
| | - Jun Cheng
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Rui Yu
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yan-Qin Qiu
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yu-Feng Gao
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
| | - Guo-Sheng Chen
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Ying Ye
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Ting Wu
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
| | - Jia-Bin Li
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Infectious Diseases, Anhui Medical University, Hefei, China
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Song L, Zou W, Wang G, Qiu L, Sai L. Cytokines and lymphocyte subsets are associated with disease severity of severe fever with thrombocytopenia syndrome. Virol J 2024; 21:126. [PMID: 38831352 PMCID: PMC11149350 DOI: 10.1186/s12985-024-02403-0] [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: 02/27/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by severe fever with thrombocytopenia syndrome virus (SFTSV). Previous studies have indicated that SFTS patients have a high mortality rate, which may be related to cytokine storm and immune dysfunction. In our study, we analyzed differences in cytokines and lymphocyte subsets between severe and non-severe SFTS patients, with the aim of identifying predictors of severity. METHODS We retrospectively analyzed demographic characteristics, clinical data, cytokine profiles, and lymphocyte subsets from 96 laboratory confirmed SFTS patients between April 2021 and August 2023. RESULTS A total of 96 SFTS patients were enrolled, with a mean age of 65.05 (± 7.92) years old. According to our grouping criteria, 35 (36.5%) of these patients were classified as severe group, while 61 (63.5%) were classified as non-severe group. Univariate analysis revealed that age, interleukin-6 (IL-6), interleukin-8 (IL-8), interleukin-10 (IL-10), interferon-α (IFN-α), CD4 + T cell, and CD8 + T cell counts were risk predictors for the severity of SFTS. Further multivariable logistic regression analysis confirmed age, IL-6 levels, and CD4 + T cell counts as independent predictors of SFTS severity. CONCLUSIONS Severe SFTS patients may experience cytokine storms and immune dysfunction. Aging, elevated levels of IL-6, and decreased CD4 + T cell count may serve as independent predictors for the severity of SFTS.
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Affiliation(s)
- Li Song
- Department of Infectious Diseases, Qilu Hospital of Shandong University, Wenhua Xi Road 107, Jinan, Shandong, 250012, China
| | - Wenlu Zou
- Department of Infectious Diseases, Qilu Hospital of Shandong University, Wenhua Xi Road 107, Jinan, Shandong, 250012, China
| | - Gang Wang
- Department of Infectious Diseases, Qilu Hospital of Shandong University, Wenhua Xi Road 107, Jinan, Shandong, 250012, China
| | - Ling Qiu
- Department of Infectious Diseases, Shandong Public Health Clinical Center, Lieshishan Dong Road 11, Jinan, Shandong, 250102, China.
| | - Lintao Sai
- Department of Infectious Diseases, Qilu Hospital of Shandong University, Wenhua Xi Road 107, Jinan, Shandong, 250012, China.
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Yang M, Yang Y, Zhang A, Ni M, Liang M, Quan B, Han W, Yang J. Pancreatic Injury Is Associated with Poor Prognosis in Severe Fever with Thrombocytopenia Syndrome. Jpn J Infect Dis 2024; 77:121-128. [PMID: 38171850 DOI: 10.7883/yoken.jjid.2022.571] [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: 01/05/2024]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease. Previous studies have primarily focused on the epidemiological and clinical characteristics of patients with SFTS, whereas pancreatic injury has received little attention. This study investigated the effects of pancreatic injury on the prognosis of patients with SFTS. A total of 156 patients diagnosed with SFTS between April 2016 and April 2022 were included in the analysis. Multivariate logistic regression analysis showed that pancreatic injury (odds ratio [OR] = 3.754, 95% confidence interval [CI]: 1.361-79.036, P = 0.024) and neurological symptoms (OR = 18.648, 95% CI: 4.921-70.668, P < 0.001) were independent risk factors for mortality. The receiver operating characteristic curve indicated that serum pancreatic enzymes were predictive of progression to death in patients with SFTS. The area under the curve (AUC) for amylase was 0.711, with an optimal cutoff value of 95.5 U/L, sensitivity of 96.4%, and specificity of 35.9%. Lipase had an AUC of 0.754, an optimal cutoff value of 354.75 U/L, sensitivity of 75%, and specificity of 67.2%. Thus, pancreatic injury was associated with a poor prognosis of SFTS and can be used as an important reference for SFTS determination and prognostic assessment.
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Affiliation(s)
- Mengke Yang
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
| | - Yang Yang
- Class 1, Grade 2019, Department of Stomatology, Bengbu Medical College, China
| | - Aiping Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
| | - Mingyue Ni
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
| | - Manman Liang
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
| | - Bin Quan
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
| | - Wenzheng Han
- Department of Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, China
| | - Jianghua Yang
- Department of Infectious Diseases, The First Affiliated Hospital of Wannan Medical College, China
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Wen Y, Fang Y, Cao F, Zhang G, Cheng S, Yu Y, Huang R, Ni Z, Li J. A person-to-person transmission cluster of severe fever with thrombocytopenia syndrome characterized by mixed viral infections with familial and nosocomial clustering. Heliyon 2024; 10:e24502. [PMID: 38298613 PMCID: PMC10827760 DOI: 10.1016/j.heliyon.2024.e24502] [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: 06/28/2023] [Revised: 12/29/2023] [Accepted: 01/10/2024] [Indexed: 02/02/2024] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne infectious disease with sporadic occurrence and high mortality. Herein, we report an example of the in-hospital transmission of SFTS virus (SFTSV) infections with familial and nosocomial clustering in Zhejiang Province, eastern China, from March to April 2023. The epidemiological investigation and genomic analysis revealed that at least eight suspected cases of SFTS occurred in this cluster, including one death and one asymptomatic case. Our report reemphasizes the risk of familial and nosocomial SFTSV infections in healthcare settings and the urgent need for the long-term systematic surveillance of SFTSV evolution in humans and animals in the eastern coastal regions of China.
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Affiliation(s)
- Yanping Wen
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Yezhen Fang
- Shangcheng District Center for Disease Control and Prevention, Zhejiang, China
| | - Feifei Cao
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Guozhong Zhang
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Shi Cheng
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Yue Yu
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Renjie Huang
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
| | - Zhimin Ni
- Shangcheng District Center for Disease Control and Prevention, Zhejiang, China
| | - Jun Li
- Hangzhou Center for Disease Control and Prevention, Zhejiang, China
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Huang T, Wang X, Mi Y, Wu W, Xu X, Li C, Wen Y, Li B, Li Y, Sun L, Li J, Wang M, Liu T, Wang S, Liang M. Time-Course Transcriptome Analysis Reveals Distinct Phases and Identifies Two Key Genes during Severe Fever with Thrombocytopenia Syndrome Virus Infection in PMA-Induced THP-1 Cells. Viruses 2023; 16:59. [PMID: 38257759 PMCID: PMC10819900 DOI: 10.3390/v16010059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/23/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024] Open
Abstract
In recent years, there have been significant advancements in the research of Severe Fever with Thrombocytopenia Syndrome Virus (SFTSV). However, several limitations and challenges still exist. For instance, researchers face constraints regarding experimental conditions and the feasibility of sample acquisition for studying SFTSV. To enhance the quality and comprehensiveness of SFTSV research, we opted to employ PMA-induced THP-1 cells as a model for SFTSV infection. Multiple time points of SFTSV infection were designed to capture the dynamic nature of the virus-host interaction. Through a comprehensive analysis utilizing various bioinformatics approaches, including diverse clustering methods, MUfzz analysis, and LASSO/Cox machine learning, we performed dynamic analysis and identified key genes associated with SFTSV infection at the host cell transcriptomic level. Notably, successful clustering was achieved for samples infected at different time points, leading to the identification of two important genes, PHGDH and NLRP12. And these findings may provide valuable insights into the pathogenesis of SFTSV and contribute to our understanding of host-virus interactions.
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Affiliation(s)
- Tao Huang
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Xueqi Wang
- Capital Institute of Pediatrics, Beijing 100020, China;
| | - Yuqian Mi
- Shanxi Academy of Advanced Research and Innovation, Taiyuan 030032, China;
| | - Wei Wu
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Xiao Xu
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Chuan Li
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Yanhan Wen
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Boyang Li
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Yang Li
- Chongqing Research Institute of Big Data, Peking University, Chongqing 400039, China
| | - Lina Sun
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Jiandong Li
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Mengxuan Wang
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Tiezhu Liu
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Shiwen Wang
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
| | - Mifang Liang
- State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (T.H.); (W.W.); (X.X.)
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9
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Doores KJ. Humoral immunity to phlebovirus infection. Ann N Y Acad Sci 2023; 1530:23-31. [PMID: 37936483 PMCID: PMC10952791 DOI: 10.1111/nyas.15080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Phleboviruses are zoonotic pathogens found in parts of Africa, Asia, Europe, and North America and cause disease symptoms ranging from self-limiting febrile illness to severe disease, including hemorrhagic diathesis, encephalitis, and ocular pathologies. There are currently no approved preventative vaccines against phlebovirus infection or antivirals for the treatment of the disease. Here, we discuss the roles of neutralizing antibodies in phlebovirus infection, the antigenic targets present on the mature polyproteins Gn and Gc, progress in vaccine development, and the prospects of identifying conserved neutralizing epitopes across multiple phleboviruses. Further research in this area will pave the way for the rational design of pan-phlebovirus vaccines that will protect against both known phleboviruses but also newly emerging phleboviruses that may have pandemic potential.
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Affiliation(s)
- Katie J. Doores
- Department of Infectious Diseases, King's College LondonGuy's HospitalLondonUK
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10
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Miura K, Fujinaga J. A Case of Severe Fever With Thrombocytopenia Syndrome With Recurrent Shock and Erythema. Cureus 2023; 15:e50305. [PMID: 38205478 PMCID: PMC10776456 DOI: 10.7759/cureus.50305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2023] [Indexed: 01/12/2024] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a fatal infectious disease often transmitted through tick bites and exposure to fluids from infected individuals. Early diagnosis is critical due to the high mortality rates of the disease; however, it might be challenging if a patient's history of tick contact is unclear. We report a detailed diagnosis of SFTS in a 69-year-old man with atypical symptoms but without identifiable tick bites. The diagnosis was made on the basis of massive diarrhea, recurrent shock, and unusual erythema presentation following hospital admission.
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Affiliation(s)
- Koji Miura
- Emergency Medicine, Kurashiki Central Hospital, Kurashiki, JPN
| | - Jun Fujinaga
- Emergency and Critical Care Center, Kurashiki Central Hospital, Kurashiki, JPN
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11
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Teramoto K, Tamura S, Yoshida K, Inada Y, Yamashita Y, Morimoto M, Mushino T, Koreeda D, Miyamoto K, Komiya N, Nakano Y, Takagaki Y, Koizumi Y. Clinical Characteristics and Diagnostic Prediction of Severe Fever with Thrombocytopenia Syndrome and Rickettsiosis in the Co-Endemic Wakayama Prefecture, Japan. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2024. [PMID: 38004073 PMCID: PMC10672843 DOI: 10.3390/medicina59112024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/07/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
Background and Objectives: The Wakayama prefecture is endemic for two types of tick-borne rickettsioses: Japanese spotted fever (JFS) and scrub typhus (ST). Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne hemorrhagic viral disease with a high mortality rate and is often difficult to differentiate from such rickettsioses. SFTS cases have recently increased in Wakayama prefecture. For early diagnosis, this study aimed to evaluate the clinical characterization of such tick-borne infections in the co-endemic area. Materials and Methods: The study included 64 febrile patients diagnosed with tick-borne infection in Wakayama prefecture between January 2013 and May 2022. Medical records of 19 patients with SFTS and 45 with rickettsiosis (JSF, n = 26; ST, n = 19) were retrospectively examined. The receiver operating curve (ROC) and area under the curve (AUC) were calculated to evaluate potential factors for differentiating SFTS from rickettsiosis. Results: Adults aged ≥70 years were most vulnerable to tick-borne infections (median, 75.5 years; interquartile range, 68.5-84 years). SFTS and rickettsiosis occurred mostly between summer and autumn. However, no significant between-group differences were found in age, sex, and comorbidities; 17 (89%) patients with SFTS, but none of those with rickettsiosis, experienced gastrointestinal symptoms such as vomiting, abdominal pain, and diarrhea. Meanwhile, 43 (96%) patients with rickettsiosis, but none of those with SFTS, developed a skin rash. The AUCs of white blood cells (0.97) and C-reactive protein (CRP) levels (0.98) were very high. Furthermore, the differential diagnosis of SFTS was significantly associated with the presence of gastrointestinal symptoms (AUC 0.95), the absence of a skin rash (AUC 0.98), leukopenia <3.7 × 109/L (AUC 0.95), and low CRP levels < 1.66 mg/dL (AUC 0.98) (p < 0.001 for each factor). Conclusions: Clinical characteristics and standard laboratory parameters can verify the early diagnosis of SFTS in areas where tick-borne infections are endemic.
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Affiliation(s)
- Kan Teramoto
- Department of Internal Medicine, National Health Insurance Susami Hospital, Wakayama 649-2621, Japan
- Department of Hematology, Kinan Hospital, Wakayama 641-8509, Japan
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Shinobu Tamura
- Department of Hematology, Kinan Hospital, Wakayama 641-8509, Japan
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
- Department of Infection Control and Prevention, Wakayama Medical University, Wakayama 641-8509, Japan
- Department of Emergency and Critical Care Medicine, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Kikuaki Yoshida
- Department of Hematology, Kinan Hospital, Wakayama 641-8509, Japan
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Yukari Inada
- Department of Infection Control and Prevention, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Yusuke Yamashita
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Masaya Morimoto
- Department of Hematology, Kinan Hospital, Wakayama 641-8509, Japan
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
- Department of Infection Control and Prevention, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Toshiki Mushino
- Department of Hematology, Kinan Hospital, Wakayama 641-8509, Japan
- Department of Hematology/Oncology, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Daisuke Koreeda
- Department of Emergency and Intensive Care Medicine, Japanese Red Cross Wakayama Medical Center, Wakayama 640-8558, Japan
| | - Kyohei Miyamoto
- Department of Infection Control and Prevention, Wakayama Medical University, Wakayama 641-8509, Japan
- Department of Emergency and Critical Care Medicine, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Nobuhiro Komiya
- Department of Infectious Diseases, Japanese Red Cross Wakayama Medical Center, Wakayama 640-8558, Japan
| | - Yoshio Nakano
- Department of Internal Medicine, Kinan Hospital, Wakayama 646-8588, Japan
| | - Yusaku Takagaki
- Department of Internal Medicine, National Health Insurance Susami Hospital, Wakayama 649-2621, Japan
| | - Yusuke Koizumi
- Department of Infection Control and Prevention, Wakayama Medical University, Wakayama 641-8509, Japan
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12
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Huang T, Wang X, Mi Y, Liu T, Li Y, Zhang R, Qian Z, Wen Y, Li B, Sun L, Wu W, Li J, Wang S, Liang M. Identification and Analysis of a Four-Gene Set for Diagnosing SFTS Virus Infection Based on Machine Learning Methods and Its Association with Immune Cell Infiltration. Viruses 2023; 15:2126. [PMID: 37896902 PMCID: PMC10612101 DOI: 10.3390/v15102126] [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: 07/29/2023] [Revised: 09/29/2023] [Accepted: 09/30/2023] [Indexed: 10/29/2023] Open
Abstract
Severe Fever with thrombocytopenia syndrome (SFTS) is a highly fatal viral infectious disease that poses a significant threat to public health. Currently, the phase and pathogenesis of SFTS are not well understood, and there are no specific vaccines or effective treatment available. Therefore, it is crucial to identify biomarkers for diagnosing acute SFTS, which has a high mortality rate. In this study, we conducted differentially expressed genes (DEGs) analysis and WGCNA module analysis on the GSE144358 dataset, comparing the acute phase of SFTSV-infected patients with healthy individuals. Through the LASSO-Cox and random forest algorithms, a total of 2128 genes were analyzed, leading to the identification of four genes: ADIPOR1, CENPO, E2F2, and H2AC17. The GSEA analysis of these four genes demonstrated a significant correlation with immune cell function and cell cycle, aligning with the functional enrichment findings of DEGs. Furthermore, we also utilized CIBERSORT to analyze the immune cell infiltration and its correlation with characteristic genes. The results indicate that the combination of ADIPOR1, CENPO, E2F2, and H2AC17 genes has the potential as characteristic genes for diagnosing and studying the acute phase of SFTS virus (SFTSV) infection.
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Affiliation(s)
- Tao Huang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Xueqi Wang
- Capital Institute of Pediatrics, Beijing 100020, China;
| | - Yuqian Mi
- Shanxi Academy of Advanced Research and Innovation, Taiyuan 030032, China;
| | - Tiezhu Liu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Yang Li
- Chongqing Research Institute of Big Data, Peking University, Chongqing 400039, China;
| | - Ruixue Zhang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Zhen Qian
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Yanhan Wen
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Boyang Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Lina Sun
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Wei Wu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Jiandong Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Shiwen Wang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
| | - Mifang Liang
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID), Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China; (T.H.); (T.L.); (R.Z.); (Z.Q.); (Y.W.); (B.L.); (L.S.); (W.W.); (J.L.)
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13
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Kim EH, Park SJ. Emerging Tick-Borne Dabie bandavirus: Virology, Epidemiology, and Prevention. Microorganisms 2023; 11:2309. [PMID: 37764153 PMCID: PMC10536723 DOI: 10.3390/microorganisms11092309] [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: 08/04/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Severe Fever with Thrombocytopenia Syndrome (SFTS), caused by Dabie bandavirus (SFTSV), is an emerging infectious disease first identified in China. Since its discovery, infections have spread throughout East Asian countries primarily through tick bites but also via transmission between animals and humans. The expanding range of ticks, the primary vectors for SFTSV, combined with migration patterns of tick-carrying birds, sets the stage for the global spread of this virus. SFTSV rapidly evolves due to continuous mutation and reassortment; currently, no approved vaccines or antiviral drugs are available. Thus, the threat this virus poses to global health is unmistakable. This review consolidates the most recent research on SFTSV, including its molecular characteristics, transmission pathways through ticks and other animals, as well as the progress in antiviral drug and vaccine development, encompassing animal models and clinical trials.
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Affiliation(s)
- Eun-Ha Kim
- Center for Study of Emerging and Re-Emerging Viruses, Korea Virus Research Institute, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea;
| | - Su-Jin Park
- Division of Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
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14
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Liu T, Zhang N, Li H, Hou S, Liu X. Analysis of severe fever with thrombocytopenia syndrome cluster in east China. Virol J 2023; 20:199. [PMID: 37658435 PMCID: PMC10474674 DOI: 10.1186/s12985-023-02155-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 08/08/2023] [Indexed: 09/03/2023] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) is a common tick-borne, natural focal disease. SFTS virus (SFTSV) transmission can occur between family members through close contact with an infected patient. In this study, we explored the possible transmission route of an outbreak cluster in east China. METHOD A case-control study was carried out to analyze the potential risk factors for person-to-person transmission. Bunia virus was detected by IgM antibody, enzyme-linked immunosorbent assay, and reverse transcription polymerase chain reaction. Chi-square, univariate, and multivariate analyses were performed to calculate the association of possible risk factors for SFTSV transmission. RESULTS Two patients had a clear history of blood and aerosols contact, and one may be exposed to aerosols in a closed environment. Five close contacts of the Index patient were IgM-positive and three were IgM and SFTSV RNA positive. Exposure to a poorly ventilated space where the corpse was stored (χ2 = 5.49, P = 0.019) and contact with the Index patient's contaminated items (χ2 = 15.77, P < 0.001) significantly associated with SFTSV infection. CONCLUSION We suspect that the cluster outbreak was possibly a person-to-person transmission of SFTSV, which may have been transmitted by directly contacting with blood of SFTS patient. The propagation of aerosols in closed environments is also an undeniable transmission.
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Affiliation(s)
- Tao Liu
- Department of Infectious Disease Control, Yantai Center for Disease Control and Prevention, 17 Fuhou Rd, Laishan District, Yantai, Shandong Province, P. R. China
| | - Nannan Zhang
- Department of Infectious Disease Control, Yantai Center for Disease Control and Prevention, 17 Fuhou Rd, Laishan District, Yantai, Shandong Province, P. R. China
| | - Haiwen Li
- Department of Infectious Disease Control, Zhaoyuan Center for Disease Control and Prevention, Yantai, Shandong Province, P. R. China
| | - Shuting Hou
- Department of Infectious Disease Control, Yantai Center for Disease Control and Prevention, 17 Fuhou Rd, Laishan District, Yantai, Shandong Province, P. R. China.
| | - Xiuwei Liu
- Department of Infectious Disease Control, Yantai Center for Disease Control and Prevention, 17 Fuhou Rd, Laishan District, Yantai, Shandong Province, P. R. China.
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15
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Yu S, Zhang Q, Su L, He J, Shi W, Yan H, Mao H, Sun Y, Cheng D, Wang X, Zhang Y, Fang L. Dabie bandavirus infection induces macrophagic pyroptosis and this process is attenuated by platelets. PLoS Negl Trop Dis 2023; 17:e0011488. [PMID: 37486928 PMCID: PMC10399884 DOI: 10.1371/journal.pntd.0011488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 06/29/2023] [Indexed: 07/26/2023] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne infection with a high mortality rate in humans, which is caused by Dabie bandavirus (DBV), formerly known as SFTS virus. Clinical manifestations of SFTS are characterized by high fever, thrombocytopenia, leukopenia, hemorrhage, gastrointestinal symptoms, myalgia and local lymph node enlargement with up to 30% case fatality rates in human. Macrophage depletion in secondary lymphoid organs have important roles in the pathogenic process of fatal SFTS, but its exact cell death mechanism remains largely unknown. Here, we showed for the first time that DBV infection induced macrophagic pyroptosis, as evidenced by swollen cells, pore-forming structures, accumulation of gasdermin D N-terminal (GSDMD-NT) as well as the release of lactate dehydrogenase (LDH) and IL-1β in human macrophages. In addition to the upregulation of pyronecrosis genes, the expressions of pyroptosis-related proteins (GSDMD, caspase-1 and IL-1β) were also elevated. To be noted, platelets were found to play a protective role in DBV-derived pyroptosis. Transcriptome analysis and in vitro studies demonstrated that platelets significantly reduced the gene expressions and protein production of pro-pyroptotic markers and inflammatory cytokines in macrophages, whereas platelets conferred a propagation advantage for DBV. Collectively, this study demonstrates a novel mechanism by which DBV invasion triggers pyroptosis as a host defense to remove replication niches in human macrophages and platelets provide an additional layer to reduce cellular death. These findings may have important implications to the pathogenesis of lethal DBV, and provide new ideas for developing novel therapeutics to combat its infection.
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Affiliation(s)
- Sicong Yu
- Department of Critical Care Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
- The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Qinyi Zhang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Lingxuan Su
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Ji He
- Blood Center of Zhejiang Province, Hangzhou, China
| | - Wen Shi
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Hao Yan
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Haiyan Mao
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Yi Sun
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Dongqing Cheng
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xuan Wang
- Shaoxing Shangyu District Center for Disease Control and Prevention, Shaoxing, China
| | - Yanjun Zhang
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Lei Fang
- Department of Critical Care Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China
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16
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Park JY, Hewawaduge C, Sivasankar C, Lloren KKS, Oh B, So MY, Lee JH. An mRNA-Based Multiple Antigenic Gene Expression System Delivered by Engineered Salmonella for Severe Fever with Thrombocytopenia Syndrome and Assessment of Its Immunogenicity and Protection Using a Human DC-SIGN-Transduced Mouse Model. Pharmaceutics 2023; 15:pharmaceutics15051339. [PMID: 37242581 DOI: 10.3390/pharmaceutics15051339] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/14/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Currently, there are no commercial vaccines or therapeutics against severe fever with thrombocytopenia syndrome (SFTS) virus. This study explored an engineered Salmonella as a vaccine carrier to deliver a eukaryotic self-mRNA replicating vector, pJHL204. This vector expresses multiple SFTS virus antigenic genes for the nucleocapsid protein (NP), glycoprotein precursor (Gn/Gc), and nonstructural protein (NS) to induce host immune responses. The engineered constructs were designed and validated through 3D structure modeling. Western blot and qRT-PCR analyses of transformed HEK293T cells confirmed the delivery and expression of the vaccine antigens. Significantly, mice immunized with these constructs demonstrated a cell-mediated and humoral response as balanced Th1/Th2 immunity. The JOL2424 and JOL2425 delivering NP and Gn/Gc generated strong immunoglobulin IgG and IgM antibodies and high neutralizing titers. To further examine the immunogenicity and protection, we utilized a human DC-SIGN receptor transduced mouse model for SFTS virus infection by an adeno-associated viral vector system. Among the SFTSV antigen constructs, the construct with full-length NP and Gn/Gc and the construct with NP and selected Gn/Gc epitopes induced robust cellular and humoral immune responses. These were followed by adequate protection based on viral titer reduction and reduced histopathological lesions in the spleen and liver. In conclusion, these data indicate that recombinant attenuated Salmonella JOL2424 and JOL2425 delivering NP and Gn/Gc antigens of SFTSV are promising vaccine candidates that induce strong humoral and cellular immune responses and protection against SFTSV. Moreover, the data proved that the hDC-SIGN transduced mice as a worthy tool for immunogenicity study for SFTSV.
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Affiliation(s)
- Ji-Young Park
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Chamith Hewawaduge
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Chandran Sivasankar
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Khristine Kaith S Lloren
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Byungkwan Oh
- Department of Veterinary Pathology, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - Mi Young So
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
| | - John Hwa Lee
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea
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17
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Park JY, Chandran S, Hewawaduge C, Lee JH. Development and evaluation of a mouse model susceptible to severe fever with thrombocytopenia syndrome virus by rAAV-based exogenous human DC-SIGN expression. Microb Pathog 2023; 178:106079. [PMID: 36966885 DOI: 10.1016/j.micpath.2023.106079] [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: 01/31/2023] [Revised: 03/14/2023] [Accepted: 03/19/2023] [Indexed: 04/01/2023]
Abstract
Experimental animal model is indispensable to evaluate the prophylactic and therapeutic candidates against severe fever with thrombocytopenia syndrome virus (SFTSV). To develop a suitable mouse model for SFTSV infection, we delivered human dendritic cell-specific ICAM-3-grabbing non-integrin (hDC-SIGN) by adeno-associated virus (AAV2) and validated its susceptibility for SFTSV infection. Western blot and RT-PCR assays confirmed the expression of hDC-SIGN in transduced cell lines and a significantly increased viral infectivity was observed in cells expressing hDC-SIGN. The C57BL/6 mice transduced with AAV2 exhibited a stable hDC-SIGN expression in the organs for 7 days. Upon SFTSV challenge with 1 × 105 FAID50, the mice transduced with rAAV-hDC-SIGN showed a 12.5% mortality and reduced platelet and white blood cell count in accordance with higher viral titer than control group. Liver and spleen samples collected from the transduced mice had pathological signs similar to the IFNAR-/- mice with severe SFTSV infection. Collectively, the rAAV-hDC-SIGN transduced mouse model can be used as an accessible and promising tool for studying the SFTSV pathogenesis and pre-clinical evaluation of vaccines and therapeutics against the SFTSV infection.
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Affiliation(s)
- Ji-Young Park
- College of Veterinary Medicine, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea
| | - Sivasankar Chandran
- College of Veterinary Medicine, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea
| | - Chamith Hewawaduge
- College of Veterinary Medicine, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea
| | - John Hwa Lee
- College of Veterinary Medicine, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea.
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18
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Luo N, Li M, Xu M, Shi C, Shi X, Ni R, Chen Y, Zheng L, Tu Y, Hu D, Yu C, Li Q, Lu Y. Research Progress of Fever with Thrombocytopenia Syndrome. INTENSIVE CARE RESEARCH 2023; 3:1-10. [PMID: 37360310 PMCID: PMC10033304 DOI: 10.1007/s44231-023-00035-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 02/20/2023] [Indexed: 03/25/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a new infectious disease first discovered in Ta-pieh Mountains in central China in 2009. It is caused by a novel bunyavirus infection (SFTSV). Since the first discovery of SFTSV, there have been case reports and epidemiological studies on SFTS in several East Asian countries, such as South Korea, Japan, Vietnam and so on. With the rising incidence of SFTS and the rapid spread of the novel bunyavirus around the world, it is clear that the virus has a pandemic potential and may pose a threat to global public health in the future. Early studies have suggested that ticks are an important medium for the transmission of SFTSV to humans; in recent years, it has been reported that there is also human-to-human transmission. In endemic areas, potential hosts include a variety of livestock and wildlife. When people are infected with SFTV, the main clinical manifestations are high fever, thrombocytopenia, leukocytopenia, gastrointestinal symptoms, liver and kidney function damage, and even MODS, with a mortality rate of about 10-30%. This article reviews the latest progress of novel bunyavirus, including virus transmission vector, virus genotypic diversity and epidemiology, pathogenesis, clinical manifestation and treatment.
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Affiliation(s)
- Ning Luo
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Mengdie Li
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Ming Xu
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Chuanchuan Shi
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Xinge Shi
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Rong Ni
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Yu Chen
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Liang Zheng
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Yuling Tu
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Dan Hu
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Chunlin Yu
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Qingying Li
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
| | - Yibin Lu
- General ICU, Xinyang Central Hospital, Xinyang Key Laboratory of Critical Care Medicine, Xinyang, 464000 Henan China
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19
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Kaneko C, Mekata H, Umeki K, Sudaryatma PE, Irie T, Yamada K, Misawa N, Umekita K, Okabayashi T. Seroprevalence of severe fever with thrombocytopenia syndrome virus in medium-sized wild mammals in Miyazaki, Japan. Ticks Tick Borne Dis 2023; 14:102115. [PMID: 36577308 DOI: 10.1016/j.ttbdis.2022.102115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 12/08/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a fatal emerging tick-borne zoonotic disease caused by the SFTS virus (SFTSV). SFTSV infection in humans and companion animals is a matter of concern in endemic areas. Various wild animals are involved in the transmission cycle of SFTSV with vector ticks. Because the home range of medium-sized wild mammals commonly overlaps with humans' living spheres, this study aimed to reveal the endemicity of SFTSV in such mammals. This study investigated the prevalence of antibodies against SFTSV and viral RNA in medium-sized wild mammals in Miyazaki Prefecture, Japan where human cases have been most frequently reported in Japan and performed a phylogenetic analysis to compare the detected SFTSV with those previously reported. Forty-three of 63 (68%) Japanese badgers (Meles anakuma) and 12 of 53 (23%) Japanese raccoon dogs (Nyctereutes procyonoides viverrinus) had antibodies against SFTSV. Japanese marten (n = 1), weasels (n = 4), and Japanese red fox (n = 1) were negative. Two of 63 (3%) badgers tested positive for SFTSV RNA, whereas the other species were negative. Phylogenetic analysis of the partial nucleotide sequence of SFTSV revealed that viral RNA detected from badgers exhibited 99.8% to 100% similarity to SFTSV, as previously reported in humans, cat, and ticks in the study area. This study demonstrated high seropositivity of antibodies in medium-sized wild mammals and suggested that SFTSV could be shared among these mammals, humans, and companion animals in endemic areas.
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Affiliation(s)
- Chiho Kaneko
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan.
| | - Hirohisa Mekata
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan
| | - Kazumi Umeki
- Division of Respirology, Rheumatology, Infectious Diseases and Neurology, Internal Medicine, Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan; Department of Medical Life Science, Faculty of Medical Bioscience, Kyushu University of Health and Welfare, Yoshino-cho 1714-1, Nobeoka, Miyazaki 882-8508, Japan
| | - Putu Eka Sudaryatma
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan
| | - Takao Irie
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan; Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan
| | - Kentaro Yamada
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan; Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan
| | - Naoaki Misawa
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan; Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan; Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan
| | - Kunihiko Umekita
- Division of Respirology, Rheumatology, Infectious Diseases and Neurology, Internal Medicine, Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan
| | - Tamaki Okabayashi
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan; Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki 889-1692, Japan; Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki 889-2192, Japan
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20
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The First Nationwide Surveillance of Severe Fever with Thrombocytopenia Syndrome in Ruminants and Wildlife in Taiwan. Viruses 2023; 15:v15020441. [PMID: 36851653 PMCID: PMC9965706 DOI: 10.3390/v15020441] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/20/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Since the first discovery of severe fever with thrombocytopenia syndrome virus (SFTSV) in China in 2009, SFTSV has rapidly spread through other Asian countries, including Japan, Korea, Vietnam and Pakistan, in chronological order. Taiwan reported its first discovery of SFTSV in sheep and humans in 2020. However, the prevalence of SFTSV in domestic and wildlife animals and the geographic distribution of the virus within the island remain unknown. A total of 1324 animal samples, including 803 domestic ruminants, 521 wildlife animals and 47 tick pools, were collected from March 2021 to December 2022 from 12 counties and one terrestrial island. The viral RNA was detected by a one-step real-time reverse transcription polymerase chain reaction (RT-PCR). Overall, 29.9% (240/803) of ruminants showed positive SFTSV RNA. Sheep had the highest viral RNA prevalence of 60% (30/50), followed by beef cattle at 28.4% (44/155), goats at 28.3% (47/166), and dairy cows at 27.5% (119/432). The bovine as a total of dairy cow and beef cattle was 27.8% (163/587). The viral RNA prevalence in ticks (predominantly Rhipicephalus microplus) was similar to those of ruminants at 27.7% (13/47), but wild animals exhibited a much lower prevalence at 1.3% (7/521). Geographically the distribution of positivity was quite even, being 33%, 29.1%, 27.5% and 37.5% for northern, central, southern and eastern Taiwan, respectively. Statistically, the positive rate of beef cattle in the central region (55.6%) and dairy cattle in the eastern region (40.6%) were significantly higher than the other regions; and the prevalence in Autumn (September-November) was significantly higher than in the other seasons (p < 0.001). The nationwide study herein revealed for the first time the wide distribution and high prevalence of SFTSV in both domestic animals and ticks in Taiwan. Considering the high mortality rate in humans, surveillance of other animal species, particularly those in close contact with humans, and instigation of protective measures for farmers, veterinarians, and especially older populations visiting or living near farms or rural areas should be prioritized.
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21
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Youdong X, Xiaofeng D, Xiyuan N, Zhengdong L. Analysis of the risk factors and prognosis for severe fever with thrombocytopenia syndrome associated encephalopathy. J Infect Chemother 2023; 29:464-468. [PMID: 36702204 DOI: 10.1016/j.jiac.2023.01.014] [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: 10/11/2022] [Revised: 12/30/2022] [Accepted: 01/21/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Severe fever with thrombocytopenia syndrome (SFTS) is frequently associated with neurological injury, but there are currently few relevant studies. The goal of this study was to look at the risk factors for SFTA-associated encephalopathy (SFTSAE) and the short- and long-term prognosis of such patients. METHODS We retrospectively studied 145 patients with SFTS who were treated at our hospital between May 2019 and November 2021. Clinical characteristics were collected, and patients were divided into two groups based on whether there was neurological injury during the disease: SFTSAE group and non-SFTSAE group. Univariate analysis was used to compare the differences in clinical data and outcomes between two groups, and multivariate Logistic regression analysis was used to reveal the independent risk factors for SFTSAE, and the predictive efficacy was assessed using the receiver operating characteristic (ROC) curve. Furthermore, survivors of SFTSAE were contacted by phone 6 months after discharge to assess the case fatality rate and quality of life. RESULTS The prevalence of SFTSAE was 22.7% (33/145). Bleeding symptoms, D-dimer level and blood amylase level were all independent risk factors for SFTSAE (P < 0.05). The combined AUC of these three factors was 0.969. Patients with SFTSAE had a 45.4% in-hospital mortality rate, and survivors had a largely normal quality of life after discharge. CONCLUSION Patients with SFTSAE frequently have multiple organ dysfunction, a high mortality rate, and a favorable long-term prognosis for survivors. Clinical manifestations of bleeding symptoms, elevated serum amylase, and elevated D-dimer were all independent risk factors for SFTSAE.
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Affiliation(s)
- Xu Youdong
- Department of Intensive Care Unit, Affiliated Lu'an Hospital, Anhui Medical University, Lu'an, 237000, China
| | - Du Xiaofeng
- Department of Intensive Care Unit, Affiliated Lu'an Hospital, Anhui Medical University, Lu'an, 237000, China
| | - Niu Xiyuan
- Department of Intensive Care Unit, Affiliated Lu'an Hospital, Anhui Medical University, Lu'an, 237000, China
| | - Liu Zhengdong
- Department of Intensive Care Unit, Affiliated Lu'an Hospital, Anhui Medical University, Lu'an, 237000, China.
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22
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Kim M, Hong KW, Kim SC, Kim RB, Cho MC. Analysis of Clinical Characteristics and Laboratory Data Related to the Prognosis of Korean Severe Fever with Thrombocytopenia Syndrome Patients: A Single-Center Study. Vector Borne Zoonotic Dis 2022; 22:559-567. [DOI: 10.1089/vbz.2022.0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Mutbyul Kim
- Department of Laboratory Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Kyung-Wook Hong
- Division of Infectious Diseases, Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Rock Bum Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
- Department of Preventive Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Min-Chul Cho
- Department of Laboratory Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
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23
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Wang B, Huang B, Li X, Guo Y, Qi G, Ding Y, Gao H, Zhang J, Wu X, Fang L. Development of functional anti-Gn nanobodies specific for SFTSV based on next-generation sequencing and proteomics. Protein Sci 2022; 31:e4461. [PMID: 36177742 PMCID: PMC9601861 DOI: 10.1002/pro.4461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/10/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an acute infectious disease caused by novel bunyavirus (SFTSV), with a mortality rate of 6.3% ~ 30%. To date, there is no specific treatment for SFTS. Previously, we demonstrated that SFTSV surface glycoprotein (Glycoprotein N, Gn) was a potential target for the development of SFTS vaccine or therapeutic antibodies, and anti-Gn neutralizing antibodies played a protective role in SFTS infection. Compared with traditional antibodies, nanobodies from camelids have various advantages, including small molecular weight, high affinity, low immunogenicity, convenient production by gene engineering, etc. In this study, we combined next-generation sequencing (NGS) with proteomics technology based on affinity purification-mass spectrometry (AP-MS) and bioinformatics analysis to high-throughput screen monoclonal anti-Gn nanobodies from camel immunized with Gn protein. We identified 19 anti-Gn monoclonal nanobody sequences, of which six sequences were selected for recombinant protein expression and purification. Among these six anti-Gn nanobodies, nanobody 57,493 was validated to be highly specific for Gn. The innovative high-throughput technical route developed in this study could also be expanded to the production of nanobodies specific for other viruses like SARS-CoV-2.
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Affiliation(s)
- Binghao Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Bilian Huang
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Xinyu Li
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Yan Guo
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Guantong Qi
- School of Life ScienceNanjing UniversityNanjingChina
| | - Yibing Ding
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Haidong Gao
- Genepioneer Biotechnologies Co. Ltd.NanjingChina
| | - Jingzi Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Xilin Wu
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
| | - Lei Fang
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjingChina
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24
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Song L, Zhao Y, Wang G, Huang D, Sai L. Analysis of risk factors associated with fatal outcome among severe fever with thrombocytopenia syndrome patients from 2015 to 2019 in Shandong, China. Eur J Clin Microbiol Infect Dis 2022; 41:1415-1420. [PMID: 36219345 DOI: 10.1007/s10096-022-04506-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 10/06/2022] [Indexed: 11/26/2022]
Abstract
To better understand the progression of severe fever with thrombocytopenia syndrome (SFTS), identify early predictors of mortality, and improve the cure rate, the present study aimed to analyze the demographic feature, clinical characteristics, and laboratory parameters of patients with SFTS and to explore the risk factors associated with fatal outcome. We retrospectively analyzed demographic feature, clinical characteristics, and laboratory parameters of 216 laboratory-confirmed SFTS patients in Shandong province between January 2015 and December 2019. Univariate analysis was used to assess the relevance between these factors and fatal outcome. Factors with P < 0.05 in univariate analysis were further analyzed using multivariable logistic regression analysis to identify the independent risk factors for mortality of SFTS. Age, five complications (including CNS symptoms, pulmonary infection, heart failure, arrhythmia, and bleeding events), and ten abnormal laboratory parameters (including serum viral load, blood platelet, ALT, AST, LDH, CK, CK-MB, Cr, serum Ca2+, and APTT) were statistically significant by univariate analysis. These factors were further analyzed by multivariable logistic regression analysis, and the results indicated that coma, pulmonary infection, high viral load, and prolonged APTT were associated with fatal outcome in SFTS patients. Our study identified four independent risk factors associated with fatal outcome for SFTS patients. The results were hoped to provide help for active treatment of SFTS. However, the identification of risk factors is not absolutely associated with fatal outcome. Patients' risk should be assessed by dynamic observation of the changes in risk factor indicators.
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Affiliation(s)
- Li Song
- Department of Infectious Diseases, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Wenhua Xi Road 107, Jinan, 250012, Shandong, China
| | - Yingjie Zhao
- Department of Rheumatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Wenhua Xi Road 107, Jinan, 250012, Shandong, China
| | - Gang Wang
- Department of Infectious Diseases, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Wenhua Xi Road 107, Jinan, 250012, Shandong, China
| | - Deyu Huang
- Department of Infectious Diseases, Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao, 266000, Shandong, China
| | - Lintao Sai
- Department of Infectious Diseases, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Wenhua Xi Road 107, Jinan, 250012, Shandong, China.
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25
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Yamauchi N, Hongo T, Kawakami M, Inoguchi K, Oguni S, Momoki N, Ueno A, Ikeda F, Fujioka S, Yamamoto K. Successful Recovery from Severe Fever with Thrombocytopenia Syndrome and Hemophagocytic Lymphohistiocytosis with Standard Treatment and a Calcium Channel Blocker of Nicardipine Hydrochloride: A Case Report. Intern Med 2022; 62:1365-1369. [PMID: 36171133 DOI: 10.2169/internalmedicine.9052-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 67-year-old man was admitted to our hospital with a high fever. Laboratory tests revealed leukopenia, thrombocytopenia, liver dysfunction, rhabdomyolysis, and hyperferritinemia. He was diagnosed with severe fever with thrombocytopenia syndrome (SFTS) complicated by hemophagocytic lymphohistiocytosis and treated with steroid therapy, intravenous calcium channel blocker (CCB), and supportive care, without favipiravir. Serum levels of ferritin and soluble interleukin 2 receptor (sIL2R) were markedly elevated on Day 3 after admission and decreased thereafter, while an SFTS viral load of 6.8×104 copies/μL was detected on Day 2, increasing to 2.9×105 copies/μL on Day 6. Serum ferritin and sIL2R levels may be better indicators of mortality than the SFTS viral load, and CCBs may have a therapeutic effect.
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Affiliation(s)
- Nao Yamauchi
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Takashi Hongo
- Emergency Department, Okayama Saiseikai General Hospital, Japan
- Department of Emergency, Critical Care, and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Manri Kawakami
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Kyosuke Inoguchi
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Syunsuke Oguni
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Noriya Momoki
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Akiko Ueno
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Fusao Ikeda
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Shinichi Fujioka
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
| | - Kazuhide Yamamoto
- Internal Medicine Department, Okayama Saiseikai General Hospital, Japan
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26
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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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Human-to-human transmission of severe fever with thrombocytopenia syndrome virus through potential ocular exposure to infectious blood. Int J Infect Dis 2022; 123:80-83. [PMID: 35987469 DOI: 10.1016/j.ijid.2022.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/08/2022] [Accepted: 08/06/2022] [Indexed: 11/21/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS), an emerging infectious disease with high mortality, was first reported in 2009 in China and subsequently endemic to South Korea, Japan, Vietnam, and Myanmar. This disease is transmitted predominantly by tick bites and potentially human-to-human. Personal protective equipments (PPEs) have been recommended to prevent SFTS human-to-human transmission, whereas the specific use of PPEs and the effect on viral transmission have rarely been reported. This report identified a family cluster of six patients with SFTS virus (SFTSV) infection. All five secondary patients had been wearing gloves and masks when exposed to the blood of the index patient, but none of them wore goggles or face shields for eye protection. Ocular route was suggested as a highly possible mode for SFTSV transmission through epidemiological, serological, and phylogenetic analysis. Eye protection should be stressed for clinicians when exposed to blood or bloody secretions.
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A ten-year assessment of the epidemiological features and fatal risk factors of hospitalized severe fever with thrombocytopenia syndrome in Eastern China. Epidemiol Infect 2022; 150:e131. [PMID: 35726737 PMCID: PMC9306006 DOI: 10.1017/s0950268822001108] [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] [Indexed: 12/02/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) virus has caused a large number of human infections since discovered in 2009. This study elucidated epidemiological features and fatal risk factors of SFTS cases accumulated up to ten years in Taizhou, a coastal prefecture of Zhejiang Province in Eastern China. A total of 188 hospitalised SFTS cases (including 40 deaths) reported to Taizhou Center for Disease Control and Prevention (CDC) during 2011–2020 were enrolled in the study. In the past decade, the annual incidence of SFTS increased over the years (P < 0.001) along with an expanding epidemic area, and the case fatality of hospitalised cases has remained high (21.3%). Although most cases occurred in hilly areas, a coastal island had the highest incidence and case fatality. The majority of cases were over the age of 60 years (72.3%), and both incidence and case fatality of SFTS increased with age. Multivariate logistic regression analysis showed that age (OR 7.47, 95% CI 1.32–42.33; P = 0.023), and haemorrhagic manifestations including petechiae (OR 7.76, 95% CI 1.17–51.50; P = 0.034), gingival haemorrhage (OR 5.38, 95% CI 1.25–23.15; P = 0.024) and melena (OR 5.75, 95% CI 1.18–28.07; P = 0.031) were significantly associated with the death of SFTS cases. Five family clusters identified were farmers, among four of which the index patients were female with a history of hypertension. Based on the study, age is a critical risk factor for incidence and case fatality of SFTS. With an increased annual incidence over the last ten years, SFTS remains a public health threat that should not be ignored. Further study is needed to look at the natural foci in the coastal islands.
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Wang M, Tan W, Li J, Fang L, Yue M. The Endless Wars: Severe Fever With Thrombocytopenia Syndrome Virus, Host Immune and Genetic Factors. Front Cell Infect Microbiol 2022; 12:808098. [PMID: 35782112 PMCID: PMC9240209 DOI: 10.3389/fcimb.2022.808098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 05/10/2022] [Indexed: 01/10/2023] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging arboviral infectious disease with a high rate of lethality in susceptible humans and caused by severe fever with thrombocytopenia syndrome bunyavirus (SFTSV). Currently, neither vaccine nor specific antiviral drugs are available. In recent years, given the fact that both the number of SFTS cases and epidemic regions are increasing year by year, SFTS has become a public health problem. SFTSV can be internalized into host cells through the interaction between SFTSV glycoproteins and cell receptors and can activate the host immune system to trigger antiviral immune response. However, SFTSV has evolved multiple strategies to manipulate host factors to create an optimal environment for itself. Not to be discounted, host genetic factors may be operative also in the never-ending winning or losing wars. Therefore, the identifications of SFTSV, host immune and genetic factors, and their interactions are critical for understanding the pathogenic mechanisms of SFTSV infection. This review summarizes the updated pathogenesis of SFTS with regard to virus, host immune response, and host genetic factors to provide some novel perspectives of the prevention, treatment, as well as drug and vaccine developments.
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Affiliation(s)
- Min Wang
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Weilong Tan
- Department of Infection Disease, Huadong Research Institute for Medicine and Biotechniques, Nanjing, China
| | - Jun Li
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Liqun Fang
- State Key Lab Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
- *Correspondence: Liqun Fang, ; Ming Yue,
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Liqun Fang, ; Ming Yue,
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30
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Zu Z, Lin H, Hu Y, Zheng X, Chen C, Zhao Y, He N. The genetic evolution and codon usage pattern of severe fever with thrombocytopenia syndrome virus. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 99:105238. [PMID: 35144005 DOI: 10.1016/j.meegid.2022.105238] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/04/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a newly emerging zoonotic infectious disease caused by the SFTS virus (SFTSV), which has been continuously circulating in Eastern Asia in recent years. Although the evolution of SFTSV has been investigated, the evolutionary changes associated with codon usage have not been reported. Thus, a comprehensive genetic and codon usage bias analysis of SFTSV was conducted to elucidate the genetic diversity and evolutionary relationships in a novel perspective. The study amplified and sequenced fifteen SFTSV strains from a prefecture of Zhejiang Province, Eastern China in 2020, where SFTS cases have been continuously reported in the past decade. Phylogenetic analysis was conducted based on the complete coding sequences of SFTSV segments. It suggested that all SFTSV strains circulating in Zhejiang were clustered with Japanese and Korean strains, which belonged to two different genotypes. Meanwhile, thirty-nine genetic reassortants classified into nineteen different reassortment forms were identified, while 45 recombination events in 41 SFTSV strains were found. Codon usage patterns were further analyzed to understand the evolutionary changes in relation to genotype and host. And it revealed that codon usage bias was mainly driven by natural selection rather than mutation pressure. In addition, the codon adaptation index (CAI) analysis demonstrated the strong adaptability of SFTSV to Gallus gallus and Homo sapiens. Similarity index (SiD) analysis indicated that Haemaphysalis longicornis posed a strong selection pressure to SFTSV. In conclusion, this study revealed that the genetic diversity of SFTSV is gradually increasing. The codon usage analysis suggested that codon usage bias of SFTSV was mainly driven by natural selection, and SFTSV has evolved host-specific codon usage patterns. This contributes to the development of control measures against SFTSV.
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Affiliation(s)
- Zhipeng Zu
- Department of Epidemiology, School of Public Health, and the Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - Haijiang Lin
- Department of Epidemiology, School of Public Health, and the Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China; Taizhou City Center for Disease Control and Prevention, Taizhou City, Zhejiang Province 318001, China
| | - Yafei Hu
- Taizhou City Center for Disease Control and Prevention, Taizhou City, Zhejiang Province 318001, China
| | - Xiang Zheng
- Taizhou City Center for Disease Control and Prevention, Taizhou City, Zhejiang Province 318001, China
| | - Cairong Chen
- Taizhou City Center for Disease Control and Prevention, Taizhou City, Zhejiang Province 318001, China
| | - Yishuang Zhao
- Taizhou City Center for Disease Control and Prevention, Taizhou City, Zhejiang Province 318001, China
| | - Na He
- Department of Epidemiology, School of Public Health, and the Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China; Shanghai Institute of Infectious Diseases and Biosecurity, Fudan University, Shanghai 200032, China.
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Kaneko C, Saito A, Inagaki H, Sugiyama H, Mazimpaka E, Fujimoto S, Okabayashi T. Rapid inactivation of Dabie bandavirus (SFTSV) by irradiation with deep-ultraviolet light-emitting diode (DUV-LED). J Med Virol 2022; 94:3438-3441. [PMID: 35246855 PMCID: PMC9314962 DOI: 10.1002/jmv.27698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/03/2022] [Accepted: 03/03/2022] [Indexed: 11/11/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) caused by Dabie bandavirus (SFTSV) is a serious public health concern in endemic areas, particularly in Asian and Southeast Asian countries. SFTSV is transmitted by direct contact with body fluids from infected humans and animals. Therefore, environmental hygiene in hospitals and veterinary clinics in SFTSV-endemic areas is highly important. This study assessed the effects of continuous and intermittent irradiation with deep-ultraviolet light-emitting diode (DUV-LED) on SFTSV. Evaluation was performed by conducting plaque assay in which SFTSV irradiated with deep-ultraviolet (DUV; 280 ± 5 nm) was inoculated onto Vero cells. The results showed that continuous and intermittent irradiation for 5 s, resulting in 18.75 mJ/cm2 of cumulative UV exposure, led to a >2.7 and >2.9 log reduction, respectively, corresponding to a >99.8% reduction in infectivity. These results demonstrate that DUV can be utilized for inactivation of SFTSV to maintain environmental hygiene in hospitals and veterinary clinics in endemic countries. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Chiho Kaneko
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki, 889-2192, Japan
| | - Akatsuki Saito
- Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki, 889-2192, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan
| | - Hiroko Inagaki
- M&N Collaboration Research Laboratory, Department of Medical Environment Innovation, Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan
| | - Hironobu Sugiyama
- M&N Collaboration Research Laboratory, Department of Medical Environment Innovation, Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan.,Nikkiso Co., Ltd., Tokyo, 150-6022, Japan
| | - Eugene Mazimpaka
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan
| | - Shouichi Fujimoto
- Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan
| | - Tamaki Okabayashi
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki, 889-2192, Japan.,Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai Nishi, Miyazaki, 889-2192, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki, 889-1692, Japan
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32
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Vivek-Ananth RP, Sahoo AK, Srivastava A, Samal A. Virtual screening of phytochemicals from Indian medicinal plants against the endonuclease domain of SFTS virus L polymerase. RSC Adv 2022; 12:6234-6247. [PMID: 35424542 PMCID: PMC8982020 DOI: 10.1039/d1ra06702h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/16/2022] [Indexed: 12/25/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) causes a highly infectious disease with reported mortality in the range 2.8% to 47%. The replication and transcription of the SFTSV genome is performed by L polymerase, which has both an RNA dependent RNA polymerase domain and an N-terminal endonuclease (endoN) domain. Due to its crucial role in the cap-snatching mechanism required for initiation of viral RNA transcription, the endoN domain is an ideal antiviral drug target. In this virtual screening study for the identification of potential inhibitors of the endoN domain of SFTSV L polymerase, we have used molecular docking and molecular dynamics (MD) simulation to explore the natural product space of 14 011 phytochemicals from Indian medicinal plants. After generating a heterogeneous ensemble of endoN domain structures reflecting conformational diversity of the corresponding active site using MD simulations, ensemble docking of the phytochemicals was performed against the endoN domain structures. Apart from the ligand binding energy from docking, our virtual screening workflow imposes additional filters such as drug-likeness, non-covalent interactions with key active site residues, toxicity and chemical similarity with other hits, to identify top 5 potential phytochemical inhibitors of endoN domain of SFTSV L polymerase. Further, the stability of the protein–ligand docked complexes for the top 5 potential inhibitors was analyzed using MD simulations. The potential phytochemical inhibitors, predicted in this study using contemporary computational methods, are expected to serve as lead molecules in future experimental studies towards development of antiviral drugs against SFTSV. Virtual screening of a large phytochemical library from Indian medicinal plants to identify potential endonuclease inhibitors against emerging virus SFTSV.![]()
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Affiliation(s)
- R P Vivek-Ananth
- The Institute of Mathematical Sciences (IMSc) Chennai 600113 India .,Homi Bhabha National Institute (HBNI) Mumbai 400094 India
| | - Ajaya Kumar Sahoo
- The Institute of Mathematical Sciences (IMSc) Chennai 600113 India .,Homi Bhabha National Institute (HBNI) Mumbai 400094 India
| | - Ashutosh Srivastava
- Discipline of Biological Engineering, Indian Institute of Technology Gandhinagar Gandhinagar 382355 India
| | - Areejit Samal
- The Institute of Mathematical Sciences (IMSc) Chennai 600113 India .,Homi Bhabha National Institute (HBNI) Mumbai 400094 India
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Zhang T, Liu Y, Ge Z, Tian D, Lin L, Zhao Z, Shen Y, Yu X, Feng Y, Qiang C, Duan J, Ma Y, Fan T, Zhao Y, Chen Z. Predictive Value of Triglyceride-Glucose Index for In-hospital Mortality in Patients With Severe Fever With Thrombocytopenia Syndrome: A Multi-Center Observational Study. Front Med (Lausanne) 2022; 8:768101. [PMID: 35059413 PMCID: PMC8763701 DOI: 10.3389/fmed.2021.768101] [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: 10/11/2021] [Accepted: 11/25/2021] [Indexed: 11/18/2022] Open
Abstract
Background: Triglyceride-glucose (TyG) index has been proposed as a reliable indicator for insulin resistance and proved to be closely associated with the severity and mortality risk of infectious diseases. It remains indistinct whether TyG index performs an important role in predicting in-hospital mortality in patients with severe fever with thrombocytopenia syndrome (SFTS). Methods: The current study retrospectively recruited patients who were admitted for SFTS from January to December 2019 at five medical centers. TyG index was calculated in accordance with the description of previous study: Ln [fasting triglyceride (TG) (mg/dl) × fasting blood glucose (FBG) (mg/dl)/2]. The observational endpoint of the present study was defined as the in-hospital death. Results: In total, 79 patients (64.9 ± 10.5 years, 39.2% female) who met the enrollment criteria were enrolled in the current study. During the hospitalization period, 17 (21.5%) patients died in the hospital. TyG index remained a significant and independent predictor for in-hospital death despite being fully adjusted for confounders, either being taken as a nominal [hazard ratio (HR) 5.923, 95% CI 1.208–29.036, P = 0.028] or continuous (HR 7.309, 95% CI 1.854–28.818, P = 0.004) variate. TyG index exhibited a moderate-to-high strength in predicting in-hospital death, with an area under the receiver operating characteristic curve (AUC) of 0.821 (95% CI 0.712–0.929, P < 0.001). The addition of TyG index displayed significant enhancement on the predictive value for in-hospital death beyond a baseline model, manifested as increased AUC (baseline model: 0.788, 95% CI 0.676–0.901 vs. + TyG index 0.866, 95% CI 0.783–0.950, P for comparison = 0.041), increased Harrell's C-index (baseline model: 0.762, 95% CI 0.645–0.880 vs. + TyG index 0.813, 95% CI 0.724–0.903, P for comparison = 0.035), significant continuous net reclassification improvement (NRI) (0.310, 95% CI 0.092–0.714, P = 0.013), and significant integrated discrimination improvement (0.111, 95% CI 0.008–0.254, P = 0.040). Conclusion: Triglyceride-glucose index, a novel indicator simply calculated from fasting TG and FBG, is strongly and independently associated with the risk of in-hospital death in patients with SFTS.
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Affiliation(s)
- Tingyu Zhang
- Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Yuanni Liu
- Department of Infectious Diseases, Yantai City Hospital for Infectious Disease, Yantai, China
| | - Ziruo Ge
- Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Di Tian
- Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Ling Lin
- Department of Infectious Diseases, Yantai City Hospital for Infectious Disease, Yantai, China
| | - Zhenghua Zhao
- Department of Infectious Diseases, Tai'an City Central Hospital, Tai'an, China
| | - Yi Shen
- Department of Infectious Diseases, Dandong Infectious Disease Hospital, Dandong, China
| | - Xiaoli Yu
- Department of Infectious Diseases, Dandong Infectious Disease Hospital, Dandong, China
| | - Yang Feng
- Department of Infectious Diseases, Tai'an City Central Hospital, Tai'an, China
| | - Chunqian Qiang
- Department of Infectious Diseases, Yantai City Hospital for Infectious Disease, Yantai, China
| | - Jianping Duan
- Department of Infectious Diseases, Qing Dao No. 6 People's Hospital, Qingdao, China
| | - Yanli Ma
- Department of Infectious Diseases, Qing Dao No. 6 People's Hospital, Qingdao, China
| | - Tianli Fan
- Department of Infectious Diseases, Qing Dao No. 6 People's Hospital, Qingdao, China
| | - Yongxiang Zhao
- Department of Infectious Diseases, Dandong Infectious Disease Hospital, Dandong, China
| | - Zhihai Chen
- Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
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Kirino Y, Yamamoto S, Nomachi T, Mai TN, Sato Y, Sudaryatma PE, Norimine J, Fujii Y, Ando S, Okabayashi T. Serological and molecular survey of tick-borne zoonotic pathogens including severe fever with thrombocytopenia syndrome virus in wild boars in Miyazaki Prefecture, Japan. Vet Med Sci 2021; 8:877-885. [PMID: 34953052 PMCID: PMC8959263 DOI: 10.1002/vms3.696] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Background Miyazaki Prefecture is one of the hotspots of severe fever with thrombocytopenia syndrome (SFTS) cases and related deaths in Japan since 2013 and other pathogens of tick‐borne diseases (TBDs). Japanese spotted fever and scrub typhus are also endemic in this region. Objectives A total of 105 wild boars, hunted in 2009, were serologically examined as sentinels for TBDs to indirectly demonstrate the potential hazard of ticks transmitting pathogens to humans in the studied area. Methods The collected blood and spleens of the wild boars underwent serological and molecular tests for SFTSV, Rickettsia japonica (Rj) [antibody to spotted fever group rickettsiae (SFGR) were tested by using species‐common antigen], and Orientia tsutsugamushi (Ot). Results Seroprevalences of SFTSV, SFGR, and Ot were 41.9%, 29.5%, and 33.3%, respectively. SFTS viral RNA was identified in 7.6% of the sera, whereas DNA of Rj or Ot was not detected in any sample. In total, 43.8% of the boars possessed an infection history with SFTSV (viral gene and/or antibody). Of these, 23.8% had multiple‐infection history with SFGR and/or Ot. Conclusions The high prevalence of SFTSV in wild boars might reflect the high risk of exposure to the virus in the studied areas. In addition, SFTSV infection was significantly correlated with Ot infection, and so were SFGR infection and Ot infection, indicating that these pathogens have common factors for infection or transmission. These data caution of the higher risk of SFTSV infection in areas with reported cases of other TBDs.
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Affiliation(s)
- Yumi Kirino
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Seigo Yamamoto
- Department of Microbiology, Miyazaki Prefectural Institute for Public Health and Environment, Miyazaki, Japan
| | - Taro Nomachi
- Department of Microbiology, Miyazaki Prefectural Institute for Public Health and Environment, Miyazaki, Japan
| | - Thi Ngan Mai
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yukiko Sato
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Putu Eka Sudaryatma
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Junzo Norimine
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yoshinori Fujii
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan.,Faculty of Education, University of Miyazaki, Miyazaki, Japan
| | - Shuji Ando
- Department of Virology I, National Institute of Infectious Diseases (NIID), Tokyo, Japan
| | - Tamaki Okabayashi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
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Yun SM, Lee TY, Lim HY, Ryou J, Lee JY, Kim YE. Development and Characterization of a Reverse Genetics System for a Human-Derived Severe Fever With Thrombocytopenia Syndrome Virus Isolate From South Korea. Front Microbiol 2021; 12:772802. [PMID: 34867909 PMCID: PMC8636023 DOI: 10.3389/fmicb.2021.772802] [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: 09/08/2021] [Accepted: 10/22/2021] [Indexed: 11/17/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging, tick-borne Bandavirus that causes lethal disease in humans. As there are no licensed vaccines and therapeutics for SFTSV, there is an urgent need to develop countermeasures against it. In this respect, a reverse genetics (RG) system is a powerful tool to help achieve this goal. Herein, we established a T7 RNA polymerase-driven RG system to rescue infectious clones of a Korean SFTSV human isolate entirely from complementary DNA (cDNA). To establish this system, we cloned cDNAs encoding the three antigenomic segments into transcription vectors, with each segment transcribed under the control of the T7 promoter and the hepatitis delta virus ribozyme (HdvRz) sequences. We also constructed two helper plasmids expressing the nucleoprotein (NP) or viral RNA-dependent RNA polymerase (RdRp) under the control of the T7 promoter and the encephalomyocarditis virus (EMCV) internal ribosome entry site (IRES). After co-transfection into BHK/T7-9 cells with three transcription and two helper plasmids, then passaging in Vero E6 or Huh-7 cells, we confirmed efficient rescue of the recombinant SFTSV. By evaluating the in vitro and in vivo virological properties of the parental and rescued SFTSVs, we show that the rescued virus exhibited biological properties similar to those of the parental virus. This system will be useful for identifying molecular viral determinants of SFTSV infection and pathogenesis and for facilitating the development of vaccine and antiviral approaches.
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Affiliation(s)
- Seok-Min Yun
- Division of Acute Viral Diseases, Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
| | - Tae-Young Lee
- Division of Emerging Virus and Vector Research, Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
| | - Hee-Young Lim
- Division of Emerging Virus and Vector Research, Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
| | - Jungsang Ryou
- Division of Acute Viral Diseases, Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
| | - Joo-Yeon Lee
- Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
| | - Young-Eui Kim
- Division of Acute Viral Diseases, Center for Emerging Virus Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju-si, South Korea
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36
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Fei X, Fang K, Ni X, Ren WH. Risk Factors of Neurological Complications in Severe Fever Patients with Thrombolytic Syndrome: A Single-Center Retrospective Study in China. Med Sci Monit 2021; 27:e932836. [PMID: 34744159 PMCID: PMC8588710 DOI: 10.12659/msm.932836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background Severe fever with thrombocytopenia syndrome is a serious insect-borne infectious disease caused by the Huaiyangshanbanyang virus. We conducted a retrospective study to identify risk factors for neurological complications caused by the virus. Material/Methods We included 121 patients who had severe fever with thrombocytopenia syndrome and were admitted to our hospital from 2013 to 2020. Patients’ laboratory test results and clinical data were collected. Univariate and multivariate regression were used for statistical analysis. Results Patients with neurological complications had higher mortality rates and longer hospital stays and disease duration than did patients without neurological complications. The neurological symptoms with the highest incidence rates were involuntary tremors (tongue and mandible), cognitive disorder, and limb tremors. Patients with neurological complications had a higher incidence of abnormal heart rhythms. Subcutaneous bleeding, pulmonary rales, percentage of neutrophils, increased lactate dehydrogenase and C-reactive protein levels, and decreased chloride ion concentration were closely related to the occurrence of neurological complications. The significant decrease in chloride ion concentration within 1 to 5 days of disease onset may be a risk factor for predicting the occurrence of neurological complications in patients with severe fever with thrombocytopenia syndrome. Conclusions Early monitoring of subcutaneous bleeding, pulmonary rales, electrocardiogram changes, and biochemical indicators in patients with severe fever with thrombocytopenia syndrome can predict the occurrence of neurological complications.
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Affiliation(s)
- Xiao Fei
- Department of Infectious Diseases, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland).,Department of Infectious Diseases, Yidu Central Hospital of Weifang Affiliated to Weifang Medical University, Weifang, Shandong, China (mainland)
| | - Kai Fang
- Department of Vertigo Medicine, Qingzhou Hospital Affiliated to Shandong First Medical University, Weifang, Shandong, China (mainland)
| | - Xiuying Ni
- Department of Infectious Diseases, Yidu Central Hospital of Weifang Affiliated to Weifang Medical University, Weifang, Shandong, China (mainland)
| | - Wan-Hua Ren
- Department of Infectious Diseases, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland)
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Jalal S, Hwang SY, Kim CM, Kim DM, Yun NR, Seo JW, Young Kim D, Jung SI, Kim UJ, Kim SE, Kim HA, Kim ES, Hur J, Kim YK, Jeong HW, Heo JY, Jung DS, Kim J, Park SH, Kwak YG, Lee S, Lim S, Lee SH. Comparison of RT-PCR, RT-nested PCRs, and real-time PCR for diagnosis of severe fever with thrombocytopenia syndrome: a prospective study. Sci Rep 2021; 11:16764. [PMID: 34408188 PMCID: PMC8373928 DOI: 10.1038/s41598-021-96066-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 08/02/2021] [Indexed: 12/01/2022] Open
Abstract
We designed a highly sensitive reverse transcription nested polymerase chain reaction targeting the M-segment (NPCR-M) of severe fever with thrombocytopenia syndrome (SFTS) virus. NPCR-M was performed in parallel with three other referenced PCR assays QPCR-S, PCR-M, and NPCR-S to assess their clinical usefulness as routine diagnostic techniques for SFTS. In this multi-centered prospective study, 122 blood samples from 38 laboratory-confirmed SFTS patients and 85 control samples were used. The results demonstrated that QPCR-S and NPCR-S had better sensitivity rate up to 21 days after symptom onset however, the PCR-M showed poor sensitivity after 7 days of symptom onset. Our designed NPCR-M had a higher detection rate up to 40 days from symptom onset and revealed the persistence of SFTSV RNA in the early convalescent phase. No false-positive results were seen for the control samples. Additionally, NPCR-M showed positive results for a sample that initially showed negative results from other PCRs and for many other samples collected in the convalescent phase of SFTS. Our designed nested PCR is suitable for SFTSV detection in patients’ blood collected in the acute and early convalescent phase of SFTS, and shows better sensitivity and high specificity even up to 40 days after symptom onset.
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Affiliation(s)
- Sehrish Jalal
- Department of Bio-Medical Science, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seong Yeon Hwang
- Department of Internal Medicine, School of Medicine, Chosun University, 588 Seosuk-dong, Dong-gu, Gwangju, 61453, Republic of Korea
| | - Choon-Mee Kim
- Premedical Science, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Dong-Min Kim
- Department of Internal Medicine, School of Medicine, Chosun University, 588 Seosuk-dong, Dong-gu, Gwangju, 61453, Republic of Korea.
| | - Na Ra Yun
- Department of Internal Medicine, School of Medicine, Chosun University, 588 Seosuk-dong, Dong-gu, Gwangju, 61453, Republic of Korea
| | - Jun-Won Seo
- Department of Internal Medicine, School of Medicine, Chosun University, 588 Seosuk-dong, Dong-gu, Gwangju, 61453, Republic of Korea
| | - Da Young Kim
- Department of Internal Medicine, School of Medicine, Chosun University, 588 Seosuk-dong, Dong-gu, Gwangju, 61453, Republic of Korea
| | - Sook In Jung
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Uh Jin Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seong Eun Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hyun Ah Kim
- Division of Infectious Diseases, Keimyung University Dongsan Medical Center, Daegu, Republic of Korea
| | - Eu Suk Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Jian Hur
- Department of Internal Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea
| | - Young Keun Kim
- Department of Internal Medicine, College of Medicine, Yonsei University Wonju, Wonju, Republic of Korea
| | - Hye Won Jeong
- Department of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Jung Yeon Heo
- Department of Infectious Diseases, School of Medicine, Ajou University, Suwon, Republic of Korea
| | - Dong Sik Jung
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jieun Kim
- Department of Internal Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Sun Hee Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Yee Gyung Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - Sujin Lee
- Department of Internal Medicine, College of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Seungjin Lim
- Department of Internal Medicine, College of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Sun Hee Lee
- Department of Internal Medicine, School of Medicine, Pusan National University, Pusan, Republic of Korea
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Zhang Y, Zhang Y, Xu Y, Huang Y. The associations between fasting blood glucose levels and mortality of SFTS in patients. BMC Infect Dis 2021; 21:761. [PMID: 34353296 PMCID: PMC8343909 DOI: 10.1186/s12879-021-06463-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/19/2021] [Indexed: 01/04/2023] Open
Abstract
Objective To identify the correlation between the level of at-admission fasting blood glucose (FBG) with poor outcomes in hospitalized patients suffering from severe fever with thrombocytopenia syndrome (SFTS). Methods Between April 1 and December 1, 2020, the list of hospitalized patients affected with SFTS infection was provided by the Infectious Disease Department at First Affiliated Hospital of Anhui Medical University, followed by the collection of information I.e., gender, age, diabetic history and the level of FBG on admission. Results In this study, a total of 77 patients were included and were categorized into three groups (< 5.6, 5.6–6.9, and ≥ 7.0 mmol/l) on the basis of their glucose level in the blood. The obtained results revealed that among three groups considerable variations were observed in leukocytes, FBG, D-Dimer, aspartate aminotransferase (AST), tumor necrosis factor-α (TNF-α), fibrin degradation products (FDP), and interleukin (IL)-10 level. Correlation analysis indicated a linear negative correlation between PLT and FBG (r = − 0.28, P = 0.01), however, a linear positive correlation was observed between AST, IL10, D-Dimer, and FDP levels and FBG (P-value < 0.05). Multivariate statistical analysis results shown that there was significant difference between group comparison (F = 17.01, P < 0.001) and interaction between group and time (F = 8.48, P < 0.05); but there was no significant difference between time point comparison (F = 0.04, P = 0.96). With the prolongation of time, the changes of FBG were different between survivor group and non-survivor group. The FBG in survival group shown a downward trend; The non-survivor group shown an upward trend. Conclusions Elevated level of FBG has been correlated with hypercoagulability, inflammation, and lower PLT in SFTS patients. The measurement of FBG level can help in evaluating the inflammatory process, hypercoagulability, and prognosis of patients suffering from SFTS. FBG can predict the prognosis of SFTS. It is necessary to pay attention to the role of FBG in the process of treatment in patients with SFTS.
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Affiliation(s)
- Yin Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Rd, Hefei, Anhui Province, China
| | - Yu Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Rd, Hefei, Anhui Province, China
| | - Yuanhong Xu
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Rd, Hefei, Anhui Province, China
| | - Ying Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Rd, Hefei, Anhui Province, China.
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Kobayashi Y, Kato H, Yamagishi T, Shimada T, Matsui T, Yoshikawa T, Kurosu T, Shimojima M, Morikawa S, Hasegawa H, Saijo M, Oishi K. Severe Fever with Thrombocytopenia Syndrome, Japan, 2013-2017. Emerg Infect Dis 2021; 26:692-699. [PMID: 32186502 PMCID: PMC7101122 DOI: 10.3201/eid2604.191011] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [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 conducted an epidemiologic study of severe fever with thrombocytopenia syndrome (SFTS) in Japan during 2013–2017. Of 303 cases reported during that period, 133 (44%) were included in this study. The median time between onset of illness and diagnosis of SFTS shortened, from 11.5 to 3.0 days, but the case-fatality rate remained high, at 27%. In 64 patients (48%), a close contact with companion animals was reported within 2 weeks of disease onset. Of these 64 patients, 40 were surveyed further, and we confirmed that 3 had direct contact with body fluids of ill companion animals; 2 had direct contact with the saliva of an ill feral cat or pet dog. These patients reported no history of tick bite, suggesting that ill companion animals might be a source of SFTS virus transmission. Direct contact with the body fluids of ill companion animals should be avoided.
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Zhang Y, Miao W, Xu Y, Huang Y. Severe fever with thrombocytopenia syndrome in Hefei: Clinical features, risk factors, and ribavirin therapeutic efficacy. J Med Virol 2021; 93:3516-3523. [PMID: 32965706 DOI: 10.1002/jmv.26544] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/14/2020] [Accepted: 09/21/2020] [Indexed: 01/22/2023]
Abstract
OBJECTIVES This study described the clinical features, risk factors, factors affecting the outcome of this disease, and ribavirin therapeutic efficacy for severe fever with thrombocytopenia syndrome (SFTS) patients in Hefei. METHODS Between April 2020 and July 2020, 62 cases admitted to the First Affiliated Hospital of Anhui Medical University were included in this study. Serum samples were collected from all patients, after which diagnosis was made via reverse transcription-polymerase chain reaction and via the use of a colloidal gold immunochromatography assay approach. RESULTS In multivariate analysis, the following factors were determined as risk factors for SFTS: Being a farmer (odds ratio [OR], 3.033), working in areas with weeds and shrubs (OR, 2.807), and being bitten by a tick (OR, 6.64). The rates of confusion, neck stiffness, viral encephalopathy, and the presence of liver damage were higher in the patients who died than that in the surviving ones. Additionally, the median of alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, creatine phosphokinase, activated partial thromboplastin time, D-dimer, fibrinogen degradation products, creatinine, and urea was also higher in the patients who died. One of the 15 patients treated with ribavirin in the early stage could not survive (6.7%), whereas 11 of the 35 patients treated with ribavirin in the late stage could not survive (31.4%); this difference was statistically significant. However, there was no significant difference in mortality between the untreated group and the other two groups (i.e., patients who started antiviral treatment <5 days from the onset and those who started antiviral treatment ≥5 days from the onset). Moreover, there was no positive effect determined on clinical or laboratory parameters in SFTS patients treated with ribavirin. Also, it was observed that leukocyte levels and platelet levels took longer to return to normal. CONCLUSIONS In Hefei, clinical features, prognostic factors, and risk factors associated with SFTS are similar to those in other areas. Patients who were given ribavirin did not have better survival rates than patients who were not given ribavirin.
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Affiliation(s)
- Yin Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Wen Miao
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Yuanhong Xu
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Ying Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
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Zhang N, Cheng XQ, Deng B, Rui J, Qiu L, Zhao Z, Lin S, Liu X, Xu J, Wang Y, Yang M, Zhu Y, Huang J, Liu C, Liu W, Luo L, Li Z, Li P, Yang T, Li ZF, Liang SY, Wang XC, Hu JL, Chen T. Modelling the transmission dynamics of severe fever with thrombocytopenia syndrome in Jiangsu Province, China. Parasit Vectors 2021; 14:237. [PMID: 33957950 PMCID: PMC8100741 DOI: 10.1186/s13071-021-04732-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/21/2021] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease that is regionally distributed in Asia, with high fatality. Constructing the transmission model of SFTS could help provide clues for disease control and fill the gap in research on SFTS models. METHODS We built an SFTS transmission dynamics model based on the susceptible-exposed-infectious-asymptomatic-recovered (SEIAR) model and the epidemiological characteristics of SFTS in Jiangsu Province. This model was used to evaluate the effect by cutting off different transmission routes and taking different interventions into account, to offer clues for disease prevention and control. RESULTS The transmission model fits the reported data well with a minimum R2 value of 0.29 and a maximum value of 0.80, P < 0.05. Meanwhile, cutting off the environmental transmission route had the greatest effect on the prevention and control of SFTS, while isolation and shortening the course of the disease did not have much effect. CONCLUSIONS The model we have built can be used to simulate the transmission of SFTS to help inform disease control. It is noteworthy that cutting off the environment-to-humans transmission route in the model had the greatest effect on SFTS prevention and control.
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Affiliation(s)
- Nan Zhang
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China
| | - Xiao-Qing Cheng
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China
| | - Bin Deng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Jia Rui
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Luxia Qiu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Zeyu Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Shengnan Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Xingchun Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Jingwen Xu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Yao Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Meng Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Yuanzhao Zhu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Jiefeng Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Chan Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Weikang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Li Luo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Zhuoyang Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Peihua Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Tianlong Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China
| | - Zhi-Feng Li
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China
| | - Shu-Yi Liang
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China
| | - Xiao-Chen Wang
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China
| | - Jian-Li Hu
- Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Centre for Disease Control and Prevention, 172, Jiangsu Rd, Nanjing, 210009, China.
| | - Tianmu Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China.
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Preparation of a polyclonal antibody against the non-structural protein, NSs of SFTSV. Protein Expr Purif 2021; 184:105892. [PMID: 33895264 DOI: 10.1016/j.pep.2021.105892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 11/23/2022]
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is newly discovered virus which is the member of the order Bunyavirales, family phenuiviridae, phlebovirus genus. Its genome is composed of 3 segments of negative-sense RNA L, M and S. NSs is a non structure protein encoded by S segment which is important for viral replication and virulence. NSs protein of SFTSV is only involved in the regulation of host innate immune responses and suppression of IFN-promoter activities. So, the exact functions of this protein need to be studied deeply. To understand the exact role of NSs from SFTSV in viral replication and host immune response, a qualified antibody against this protein is required. In this study, NSs gene of SFTSV, was cloned into a bacterial expression vector (pGEX-6P-1) and the recombinant plasmid was transformed into Escherichia coli BL21 (DE3) cells. The SFTSV NSs fusion protein was purified using Glutathione Sepharose 4B and utilized as an antigen to immunize rabbits and obtain an anti-SFTSV NSs polyclonal antibody. Proper expression of the fusion protein and polyclonal antibody specificity were confirmed by western blotting and immunofluorescence analyses. The polyclonal antibody recognized NSs from SFTSV specifically. This is the first report that NSs can form viroplasm-like structures not only in infected cells but also in transfected cells with NSs plasmids. This polyclonal antibody will be useful for future studies of NSs functions.
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Residual and Late Onset Symptoms Appeared in a Patient with Severe Fever with Thrombocytopenia in a Convalescence Stage. Viruses 2021; 13:v13040657. [PMID: 33920248 PMCID: PMC8069184 DOI: 10.3390/v13040657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/03/2021] [Accepted: 04/07/2021] [Indexed: 11/16/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne infectious disease caused by Dabie bandavirus (formerly SFTS virus, SFTSV). Its manifestations during the convalescent phase have not been widely described. We report a patient presenting with hematospermia, fatigue, myalgia, alopecia, insomnia, and depression during the recovery phase of SFTS. Since these symptoms are widely observed in patients with viral hemorrhagic fevers, there might be common mechanisms between SFTS and other viral hemorrhagic fevers. Close monitoring may be required during the recovery phase of SFTS.
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Fang X, Hu J, Peng Z, Dai Q, Liu W, Liang S, Li Z, Zhang N, Bao C. Epidemiological and clinical characteristics of severe fever with thrombocytopenia syndrome bunyavirus human-to-human transmission. PLoS Negl Trop Dis 2021; 15:e0009037. [PMID: 33930022 PMCID: PMC8087050 DOI: 10.1371/journal.pntd.0009037] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 12/07/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) was listed as one of the most severe infectious disease by world health organization in 2017. It can mostly be transmitted by tick bite, while human-to-human transmission has occurred on multiple occasions. This study aimed to explore the epidemiological and clinical characteristics and make risk analysis of SFTS human-to-human transmission. METHODS Descriptive and spatial methods were employed to illustrate the epidemiological and clinical characteristics of SFTS human-to-human transmission. The risk of SFTS human-to-human transmission was accessed through secondary attack rate (SAR) and basic reproductive number (R0). Logistic regression analysis was used to identify the associated risk factors. RESULTS A total of 27 clusters of SFTS human-to-human transmission were reported in China and South Korea during 1996-2019. It mainly occurred among elder people in May, June and October in central and eastern China. The secondary cases developed milder clinical manifestation and better outcome than the index cases. The incubation period was 10.0 days (IQR:8.0-12.0), SAR was 1.72%-55.00%, and the average R0 to be 0.13 (95%CI:0.11-0.16). Being blood relatives of the index case, direct blood/bloody secretion contact and bloody droplet contact had more risk of infection (OR = 6.35(95%CI:3.26-12.37), 38.01 (95%CI,19.73-73.23), 2.27 (95%CI,1.01-5.19)). CONCLUSIONS SFTS human-to-human transmission in China and South Korea during 1996-2019 had obvious spatio-temporal distinction. Ongoing assessment of this transmission risk is crucial for public health authorities though it continues to be low now.
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Affiliation(s)
- Xinyu Fang
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Jianli Hu
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Zhihang Peng
- School of Public Health, Nanjing Medical University, Nanjing, China
| | - Qigang Dai
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Wendong Liu
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Shuyi Liang
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Zhifeng Li
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Nan Zhang
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
| | - Changjun Bao
- Jiangsu Provincial Center for Disease Control and Prevention (Jiangsu institution of Public health), Nanjing, China
- School of Public Health, Nanjing Medical University, Nanjing, China
- NHC Key laboratory of Enteric Pathogenic Microbiology, Nanjing, China
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Li A, Liu L, Wu W, Liu Y, Huang X, Li C, Liu D, Li J, Wang S, Li D, Liang M. Molecular evolution and genetic diversity analysis of SFTS virus based on next-generation sequencing. BIOSAFETY AND HEALTH 2021. [DOI: 10.1016/j.bsheal.2021.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Epidemiological Characteristics of Severe Fever with Thrombocytopenia Syndrome from 2010 to 2019 in Mainland China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18063092. [PMID: 33802869 PMCID: PMC8002760 DOI: 10.3390/ijerph18063092] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 11/20/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease and that is a severe threat to public health considering its high fatality and person-to-person transmission. In order to obtain an updated and deep understanding of the epidemiological characteristics of SFTS in mainland China, we used Pearson’s chi-squared test to compare the fatality rate and demographic characteristics in different groups. Data were analyzed in R3.6.1 (R Development Core Team 2018), while the visualization was performed in ArcGIS 10 (ESRI, Redlands, CA, USA), and the statistical significance was set at p < 0.05. A total of 13,824 SFTS cases involving 8899 lab-confirmed cases and 4925 probable cases were reported and included in the epidemiological analysis. Our study found that the number of SFTS cases showed an increasing trend with a small decrease in the past three years. The laboratory-confirmed rate was about 64.4%, which varied between different years and areas. Although most cases (99.3%) were distributed in 7 provinces (Henan, Shandong, Anhui, Hubei, Liaoning, Zhejiang, and Jiangsu), the regional distribution of SFTS gradually expanded from 5 provinces in 2010 to 25 provinces by 2019, especially at the town level. The SFTS cases were mainly sporadic. A total of 96.5% occurred from April to October, and 93.3% of cases were concentrated in middle-aged and elderly people (40–84 years old). Farmers were the main high-risk population. Female cases were slightly more than male cases; however, there were differences between different provinces. The mortality rate showed an increasing trend with age. Overall, the SFTS cases were mainly middle-aged and elderly farmers that sporadically distributed throughout seven provinces with a spatially expanding trend. The laboratory-confirmed rate varied in different years and provinces, which implied that the diagnosis and report criteria for SFTS should be further updated and unified in order to get a better understanding of its epidemiological characteristics and provide scientific data for SFTS control.
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Sun JM, Wu HX, Lu L, Liu Y, Mao ZY, Ren JP, Yao WW, Qu HH, Liu QY. Factors associated with spatial distribution of severe fever with thrombocytopenia syndrome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 750:141522. [PMID: 32846249 DOI: 10.1016/j.scitotenv.2020.141522] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) was firstly identified in mainland China in 2009 and the geographic distribution has expanded in recent years. In this study, we constructed ecological niche models (ENM) of SFTS with meteorological factors, environmental factor, and density of domestic animals using MaxEnt. We found four significant associated factors including altitude, yearly average temperature, yearly accumulated precipitation, and yearly average relative humidity which accounted for 94.1% percent contribution. SFTS occurrence probability was high when altitude was between -100 m and 100 m, and the probability was nearly 0 when altitude was beyond 3000 m. Response curves of SFTS to the yearly average temperature, yearly accumulated precipitation, and yearly average relative humidity were all reversed V-shape. SFTS occurrence probability was high where the yearly average temperature, yearly accumulated precipitation, and yearly relative humidity were 12.5-17.5 °C, 700-2250 mm and 63-82%, respectively. ENMs predicted that the potential high-risk areas were mainly distributed in eastern areas and central areas of China. But there were some predicted potential high-risk areas where no SFTS case was reported up to date. More researches should be done to make clear whether SFTS case had occurred in these areas.
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Affiliation(s)
- Ji-Min Sun
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, China
| | - Hai-Xia Wu
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, China
| | - Liang Lu
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, China
| | - Ying Liu
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, China
| | | | - Jiang-Ping Ren
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, China
| | - Wen-Wu Yao
- Key Laboratory of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, China
| | - Hong-Hua Qu
- Qilu Hospital of Shandong University, China.
| | - Qi-Yong Liu
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, China.
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48
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Mendoza CA, Yamaoka S, Tsuda Y, Matsuno K, Weisend CM, Ebihara H. The NF-κB inhibitor, SC75741, is a novel antiviral against emerging tick-borne bandaviruses. Antiviral Res 2020; 185:104993. [PMID: 33296695 DOI: 10.1016/j.antiviral.2020.104993] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/12/2020] [Accepted: 12/03/2020] [Indexed: 11/28/2022]
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) and Heartland virus (HRTV) cause viral hemorrhagic fever-like illnesses in humans due to an aberrant host inflammatory response, which contributes to pathogenesis. Here, we established two separate minigenome (MG) systems based on the M-segment of SFTSV and HRTV. Following characterization of both systems for SFTSV and HRTV, we used them as a platform to screen potential compounds that inhibit viral RNA synthesis. We demonstrated that the NF-κB inhibitor, SC75741, reduces viral RNA synthesis of SFTSV and HRTV using our MG platform and validated these results using infectious SFTSV and HRTV. These results may lead to the use of MG systems as potential screening systems for the identification of antiviral compounds and yield novel insights into host-factors that could play role in bandavirus transcription and replication.
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Affiliation(s)
- Crystal A Mendoza
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN, 55905, USA
| | - Satoko Yamaoka
- Mayo Clinic, Department of Molecular Medicine, Rochester, MN, 55905, USA
| | - Yoshimi Tsuda
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, 060-8638, Japan
| | - Keita Matsuno
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, 001-0020, Japan; International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan
| | - Carla M Weisend
- Mayo Clinic, Department of Molecular Medicine, Rochester, MN, 55905, USA
| | - Hideki Ebihara
- Mayo Clinic, Department of Molecular Medicine, Rochester, MN, 55905, USA.
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49
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Okada A, Hotta A, Kimura M, Park E, Morikawa S, Inoshima Y. A retrospective survey of the seroprevalence of severe fever with thrombocytopenia syndrome virus in wild animals in Japan. Vet Med Sci 2020; 7:600-605. [PMID: 33249771 PMCID: PMC8025650 DOI: 10.1002/vms3.400] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/27/2020] [Accepted: 11/02/2020] [Indexed: 12/04/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) has a high fatality rate and is caused by SFTS virus (SFTSV). Currently, SFTS is endemic to some areas in western Japan, and wild animals are considered to play important roles in the circulation of SFTSV in the environment. Previous retrospective surveys using samples mainly obtained between 2006 and 2015 revealed serological evidence of SFTSV infection in wild animals; however, seroprevalence before 2006 remains unclear. In this study, we investigated the presence of anti‐SFTSV antibodies in a total of 521 serum samples from nine wild animal species collected from 11 prefectures in central and eastern Japan between 1980 and 2000. All samples yielded negative results for antibodies to SFTSV, suggesting that there had been few or no SFTSV infections before 2000 in the sampled areas.
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Affiliation(s)
- Ayaka Okada
- Laboratory of Food and Environmental HygieneCooperative Department of Veterinary MedicineFaculty of Applied Biological SciencesGifu UniversityGifuJapan
- Education and Research Center for Food Animal HealthGifu University (GeFAH)GifuJapan
| | - Akitoyo Hotta
- Department of Veterinary ScienceNational Institute of Infectious DiseasesShinjukuTokyoJapan
| | - Masanobu Kimura
- Department of Veterinary ScienceNational Institute of Infectious DiseasesShinjukuTokyoJapan
| | - Eun‐sil Park
- Department of Veterinary ScienceNational Institute of Infectious DiseasesShinjukuTokyoJapan
| | - Shigeru Morikawa
- Department of Veterinary ScienceNational Institute of Infectious DiseasesShinjukuTokyoJapan
- The United Graduate School of Veterinary SciencesGifu UniversityGifuJapan
| | - Yasuo Inoshima
- Laboratory of Food and Environmental HygieneCooperative Department of Veterinary MedicineFaculty of Applied Biological SciencesGifu UniversityGifuJapan
- Education and Research Center for Food Animal HealthGifu University (GeFAH)GifuJapan
- The United Graduate School of Veterinary SciencesGifu UniversityGifuJapan
- Joint Graduate School of Veterinary SciencesGifu UniversityGifuJapan
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50
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Li J, Li S, Yang L, Cao P, Lu J. Severe fever with thrombocytopenia syndrome virus: a highly lethal bunyavirus. Crit Rev Microbiol 2020; 47:112-125. [PMID: 33245676 DOI: 10.1080/1040841x.2020.1847037] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a novel bunyavirus. Since 2007, SFTS disease has been reported in China with high fatality rate up to 30%, which drew high attention from Centre for Disease Control and Prevention and government. SFTSV is endemic in the centra l and eastern China, Korea and Japan. There also have been similar cases reported in Vietnam. The number of SFTSV infection cases has a steady growth in these years. As SFTSV could transmitted from person to person, it will expose the public to infectious risk. In 2018 annual review of the Blueprint list of priority diseases, World Health Organisation has listed SFTSV infection as prioritised diseases for research and development in emergency contexts. However, the pathogenesis of SFTSV remains largely unclear. Currently, there are no specific therapeutics or vaccines to combat infections of SFTSV. This review discusses recent findings of epidemiology, transmission pathway, pathogenesis and treatments of SFTS disease.
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Affiliation(s)
- Jing Li
- NHC Key Laboratory of Carcinogenesis, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Microbiology, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, Central South University, Changsha, China
| | - Shen Li
- NHC Key Laboratory of Carcinogenesis, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Microbiology, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, Central South University, Changsha, China
| | - Li Yang
- NHC Key Laboratory of Carcinogenesis, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Microbiology, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, Central South University, Changsha, China
| | - Pengfei Cao
- NHC Key Laboratory of Carcinogenesis, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Microbiology, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, Central South University, Changsha, China
| | - Jianhong Lu
- NHC Key Laboratory of Carcinogenesis, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Microbiology, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, Central South University, Changsha, China
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