Coinfection of Severe Fever With Thrombocytopenia Syndrome Virus and Coxiella burnetii in Developmental Stage of Hard Ticks in Subtropical Region of Koreaopen access
- Authors
- Yoo, Jeong Rae; Heo, Sang Taek; Kim, Misun; Kim, Miyeon; Kang, Myeong Jin; Kim, Eui Tae; Kang, Su Yeon; Lee, Keun Hwa
- Issue Date
- May-2023
- Publisher
- KOREAN ACAD MEDICAL SCIENCES
- Keywords
- Severe Fever With Thrombocytopenia Syndrome Virus; Coxiella burnetii; QFever; Ticks; Hemaphysalis longicornis; Jeju-do; South Korea
- Citation
- JOURNAL OF KOREAN MEDICAL SCIENCE, v.38, no.20, pp.1 - 9
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF KOREAN MEDICAL SCIENCE
- Volume
- 38
- Number
- 20
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186330
- DOI
- 10.3346/jkms.2023.38.e156
- ISSN
- 1011-8934
- Abstract
- BACKGROUND: Severe fever with thrombocytopenia syndrome virus (SFTSV) is transmitted through tick bites. Ticks are potential vectors for the bacterium Coxiella burnetii that causes Query fever. Here, we analyzed SFTSV and C. burnetii co-infection rates in ticks in rural areas of Jeju Island, South Korea.
METHODS: Free ticks were collected from the natural environment of the island between 2016 and 2019, and SFTSV RNA was extracted. Additionally, ribosomal RNA gene sequencing was used to identify Coxiella species.
RESULTS: Haemaphysalis longicornis was the most common tick species followed by H. flava. Tick number gradually increased from April, peaked in August, and was lowest in March. Of all the collected ticks, 82.6% (2,851/3,458) were nymphs, 17.9% (639/3,458) adults, and 0.1% (4/3,458) larvae. SFTSV-infected ticks comprised 12.6% of all ticks; their numbers were the lowest in November-December, increased from January, and were mostly identified in the adult stage during June-August. C. burnetii infections were detected in 4.4% of the SFTSV-infected H. longicornis ticks. C. burnetii co-infection was mainly observed in the nymph stage of H. longicornis, with the highest infection rate in January, followed by December and November.
CONCLUSION: Our findings suggest that Jeju Island has a high SFTSV and potential C. burnetii infection in ticks. This study provides important insights regarding SFTS and Q fever risk to humans in South Korea.
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