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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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Saba Villarroel PM, Chaiphongpachara T, Nurtop E, Laojun S, Pangpoo-Nga T, Songhong T, Supungul D, Baronti C, Thirion L, Leaungwutiwong P, de Lamballerie X, Missé D, Wichit S. Seroprevalence study in humans and molecular detection in Rhipicephalus sanguineus ticks of severe fever with thrombocytopenia syndrome virus in Thailand. Sci Rep 2024; 14:13397. [PMID: 38862576 PMCID: PMC11167008 DOI: 10.1038/s41598-024-64242-x] [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: 02/05/2024] [Accepted: 06/06/2024] [Indexed: 06/13/2024] Open
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne virus with a mortality rate of up to 30%. First identified in China in 2009, it was later reported in other Asian countries, including Thailand in 2020. SFTSV has been detected in several tick species, including Rhipicephalus sanguineus, known for infesting dogs. We conducted a seroprevalence study of SFTSV in Bangkok and Nong Khai, Thailand, by analyzing 1162 human samples collected between 2019 and 2023. The testing method relied on IgG detection using ELISA and confirmed though a virus seroneutralization test. The results indicated that out of the participants, 12 (1.1%) tested positive for anti-SFTSV IgG antibodies; however, none exhibited positive results in the seroneutralization assay. Additionally, molecular detection of SFTSV, Crimean-Congo hemorrhagic fever (CCHF), Coxiella spp., Bartonella spp., and Rickettsia spp. was performed on 433 Rh. sanguineus ticks collected from 49 dogs in 2023 in Chachoengsao Province, Thailand. No evidence of these pathogens was found in ticks. These findings highlight the importance of exploring viral cross-reactivity. Furthermore, it is important to conduct additional studies to isolate SFTSV from animals and ticks in order to identify the potential transmission routes contributing to human and animal infections in Thailand.
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Affiliation(s)
- Paola Mariela Saba Villarroel
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
- Viral Vector Joint Unit and Joint Laboratory, Mahidol University, Nakhon Pathom, Thailand
| | - Tanawat Chaiphongpachara
- Department of Public Health and Health Promotion, College of Allied Health Sciences, Suan Sunandha Rajabhat University, Samut Songkhram, Thailand
| | - Elif Nurtop
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190- Inserm 1207), Marseille, France
| | - Sedthapong Laojun
- Department of Public Health and Health Promotion, College of Allied Health Sciences, Suan Sunandha Rajabhat University, Samut Songkhram, Thailand
| | | | - Thanaphon Songhong
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
- Viral Vector Joint Unit and Joint Laboratory, Mahidol University, Nakhon Pathom, Thailand
| | - Dolruethai Supungul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand
- Viral Vector Joint Unit and Joint Laboratory, Mahidol University, Nakhon Pathom, Thailand
| | - Cécile Baronti
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190- Inserm 1207), Marseille, France
| | - Laurence Thirion
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190- Inserm 1207), Marseille, France
| | - Pornsawan Leaungwutiwong
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Xavier de Lamballerie
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190- Inserm 1207), Marseille, France
| | - Dorothée Missé
- MIVEGEC, CNRS, IRD, Univ. Montpellier, Montpellier, France
| | - Sineewanlaya Wichit
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, Thailand.
- Viral Vector Joint Unit and Joint Laboratory, Mahidol University, Nakhon Pathom, Thailand.
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