Severe fever with thrombocytopenia syndrome (SFTS) is a life-threatening viral zoonosis. The causative agent of this disease is the Dabie bandavirus, which is usually known as the SFTS virus (SFTSV). Although the role of vertebrates in SFTSV transmission to humans remains uncertain, some reports have suggested that dogs could potentially transmit SFTSV to humans. Consequently, preventive measures against SFTSV in dogs are urgently needed. In the present study, dogs were immunized three times at two-week intervals with formaldehyde-inactivated SFTSV with two types of adjuvants. SFTSV (KCD46) was injected into all dogs two weeks after the final immunization. Control dogs showed viremia from 2 to 4 days post infection (dpi), and displayed white pulp atrophy in the spleen, along with a high level of terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling assay (TUNEL) positive area. However, the inactivated SFTSV vaccine groups exhibited rare pathological changes and significantly reduced TUNEL positive areas in the spleen. Furthermore, SFTSV viral loads were not detected at any of the tested dpi. Our results indicate that both adjuvants can be safely used in combination with an inactivated SFTSV formulation to induce strong neutralizing antibodies. Inactivated SFTSV vaccines effectively prevent pathogenicity and viremia in dogs infected with SFTSV. In conclusion, our study highlighted the potential of inactivated SFTSV vaccination for SFTSV control in dogs.
Citations
Citations to this article as recorded by
The immunogenicity and protection efficacy evaluation of mRNA vaccine candidate for severe fever with thrombocytopenia syndrome in mice Da-Eun Jeong, Jack Yoon, Baek Kim, Jun-Gu Kang, Abdallah M. Samy PLOS Neglected Tropical Diseases.2025; 19(4): e0012999. CrossRef
Severe fever with thrombocytopenia syndrome (SFTS) is a
tick-borne emerging infectious disease caused by the SFTS
virus (SFTSV) and is a threat to public health due to its high
fatality rate. However, details on tick-to-human transmission
of SFTSV are limited. In this study, we determined the wholegenome
sequence of a South Korean SFTSV strain (CUKJJ01),
compared it to those of other recent human SFTSV
isolates, and identified the genetic variations and relationships
among the SFTSV strains. The genome of CUK-JJ01
was consistent with the genome of other members of the genus
Phlebovirus, including the large (L), medium (M), and
small (S) segments of 6368, 3378, and 1744 nucleotides, respectively.
Based on amino acid sequences of the M and S
segments, which are used to distinguish the six SFTSV genotypes,
CUK-JJ01 was classified as genotype B. Segment analysis
revealed that the L, M, and S segments were 97.49%,
97.18%, and 97.94% similar to those of KAJNH2/2013/
Korea, ZJZHSH-FDE/2012/China, and KADGH/2013/Korea,
respectively. Currently, only few studies on SFTSV have been
conducted in Korean population and most were limited to
serological analysis. Although the present study has limitations
in terms of number of sample analyzed, the findings
may serve as basis to understand the transmission and spread
of SFTSV, as well as for the development of diagnostic and
detection methods for viral recombinants by comparing
the whole genome sequence of SFTSV isolates from South
Korea and that of foreign isolates.
Citations
Citations to this article as recorded by
Circulation of tick-borne pathogens in wildlife of the Republic of Korea Hye-ryung Byun, Seong-Ryeong Ji, Jun-Gu Kang, Chang-Yong Choi, Ki-Jeong Na, Jong-Taek Kim, Joon-Seok Chae One Health.2024; 19: 100913. CrossRef
Molecular characterization of the genome of a new bunyavirus isolated in 2023 in Huzhou, China Shili Song, Zhang Shen, Deshun Xu Journal of Clinical Virology Plus.2024; 4(3): 100188. CrossRef
Multiple Genotypes and Reassortants of Severe Fever With Thrombocytopenia Syndrome Virus Co‐Circulating in Hangzhou in Southeastern China, 2013–2023 Yanping Wen, Zhimin Ni, Yan Hu, Jun Wu, Yezhen Fang, Guozhong Zhang, Renjie Huang, Shi Cheng, Feifei Cao, Qihao Xu, Yue Yu, Min Liu, Hongnv Yu, Liangliang Huo, Jun Li Journal of Medical Virology.2024;[Epub] CrossRef
Genetic Diversity, Regional Distribution, and Clinical Characteristics of Severe Fever with Thrombocytopenia Syndrome Virus in Gangwon Province, Korea, a Highly Prevalent Region, 2019–2021 Mi-Young Moon, Hyeon Kyu Kim, Se-Jin Chung, Jae Hwan Byun, Ha-Na Kim, Woan Lee, Soon-Won Lee, Sezim Monoldorova, Sungkyeong Lee, Bo-Young Jeon, Eun-Joo Lim Microorganisms.2023; 11(9): 2288. CrossRef
Identification of severe fever with thrombocytopenia syndrome virus genotypes in patients and ticks in Liaoning Province, China Xiao-Hu Han, Yue Ma, Hong-Yan Liu, Dan Li, Yan Wang, Feng-Hua Jiang, Qing-Tian Gao, Feng Jiang, Bao-Shan Liu, Guo-Shun Shen, Ze-Liang Chen Parasites & Vectors.2022;[Epub] CrossRef
Analysis of cross neutralizing activity of antibodies from sera of severe fever with thrombocytopenia syndrome patients to deal with different genotype strains Jiaxin Xu, Yuanni Liu, Fan Zhang, Xin Wang, Weijin Huang, Yulong Wu, Boqing Li, Jiapeng Zhuang, Yixing Bing, Youchun Wang, Yuanyuan Qiao Frontiers in Microbiology.2022;[Epub] CrossRef
Development of a real-time loop-mediated isothermal amplification method for the detection of severe fever with thrombocytopenia syndrome virus Jae Woong Lee, Yu-Jung Won, Lae Hyung Kang, Sung-Geun Lee, Seung-Won Park, Soon-Young Paik Journal of Microbiology.2020; 58(8): 711. CrossRef