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Hwang JM, Kim JG, Yeh JY. Serological evidence of bluetongue virus infection and serotype distribution in dairy cattle in South Korea. BMC Vet Res 2019; 15:255. [PMID: 31337392 PMCID: PMC6651986 DOI: 10.1186/s12917-019-2000-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 07/11/2019] [Indexed: 11/10/2022] Open
Abstract
Background Bluetongue is a vector-borne viral disease, and bluetongue virus (BTV) outbreaks can cause substantial economic losses. Even subclinical infection may carry significant associated costs, including a loss of condition, reduced milk yield, and infertility and abortion, and indirect costs, largely due to the export restrictions and surveillance requirements imposed to limit the spread of the virus. However, the BTV epidemiology in the Far East remains incompletely understood, especially in the cattle population in South Korea. In this study, the seroprevalence of BTV antibodies and distribution of BTV serotypes in dairy cattle in South Korea were evaluated to improve the understanding of the BTV epidemiological situation in the Asia-Pacific region. Results Between 2012 and 2013, a total of 37 out of 171 dairy cattle herds (21.6%) and 85 out of 466 dairy cattle heads (18.2%) showed antibodies against BTV. Neutralizing antibodies to BTV-1, − 2, − 3, − 4, − 7, − 15, and − 16 serotypes were identified, and the RNAs of the BTV-1, − 2, − 3, − 15, and − 16 serotypes were detected, indicating that BTV was circulating in the dairy cattle population in South Korea. Conclusions These findings indicate that BTV is widespread and has circulated in dairy cattle in South Korea. This is the first report presenting evidence of circulating antibodies against BTV and the serotype distribution in bovine populations in South Korea.
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Affiliation(s)
- Jeong-Min Hwang
- Veterinary Research Center, Green Cross Veterinary Products Co., Ltd, Kugal-dong 227-5, Giheung-gu, Yongin-si, Gyeonggi-do, 17066, South Korea
| | - Jae Geun Kim
- Department of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Academy-ro 119, Yeonsu-gu, Incheon, 22012, South Korea
| | - Jung-Yong Yeh
- Department of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Academy-ro 119, Yeonsu-gu, Incheon, 22012, South Korea. .,Emerging & Exotic Diseases Research Laboratory, Foreign Animal Diseases Division, National Veterinary Research and Quarantine Service, Anyang-ro 175, Manan-gu, Anyang-si, Gyeonggi-do, 14089, South Korea.
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Douangngeun B, Theppangna W, Soukvilay V, Senaphanh C, Phithacthep K, Phomhaksa S, Yingst S, Lombardini E, Hansson E, Selleck PW, Blacksell SD. Seroprevalence of Q Fever, Brucellosis, and Bluetongue in Selected Provinces in Lao People's Democratic Republic. Am J Trop Med Hyg 2016; 95:558-561. [PMID: 27430548 PMCID: PMC5014259 DOI: 10.4269/ajtmh.15-0913] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/07/2016] [Indexed: 11/07/2022] Open
Abstract
This study has determined the proportional seropositivity of two zoonotic diseases, Q fever and brucellosis, and bluetongue virus (BTV) which is nonzoonotic, in five provinces of Lao People's Democratic Republic (PDR) (Loungphabang, Luangnumtha, Xayaboury, Xiengkhouang, and Champasak, and Vientiane Province and Vientiane capital). A total of 1,089 samples from buffalo, cattle, pigs, and goats were tested, with seropositivity of BTV (96.7%), Q fever (1.2%), and brucellosis (0.3%). The results of this survey indicated that Q fever seropositivity is not widely distributed in Lao PDR; however, Xayaboury Province had a cluster of seropositive cattle in seven villages in four districts (Botan, Kenthao, Paklaiy, and Phiang) that share a border with Thailand. Further studies are required to determine if Xayaboury Province is indeed an epidemiological hot spot of Q fever activity. There is an urgent need to determine the levels of economic loss and human health-related issues caused by Q fever, brucellosis, and BTV in Lao PDR.
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Affiliation(s)
- Bounlom Douangngeun
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Watthana Theppangna
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Vilayvahn Soukvilay
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Chanthana Senaphanh
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Kamphok Phithacthep
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Souk Phomhaksa
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic
| | - Samuel Yingst
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Eric Lombardini
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Eric Hansson
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Paul W Selleck
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Stuart D Blacksell
- Microbiology Laboratory, Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Mahosot Hospital, Vientiane, Lao People's Democratic Republic.,Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Churchill Hospital, Oxford, United Kingdom
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Sairaju V, Susmitha B, Rao PP, Hegde NR, Meena K, Reddy YN. Type-specific seroprevalence of bluetongue in Andhra Pradesh, India, during 2005-2009. INDIAN JOURNAL OF VIROLOGY : AN OFFICIAL ORGAN OF INDIAN VIROLOGICAL SOCIETY 2013; 24:394-7. [PMID: 24426304 DOI: 10.1007/s13337-013-0156-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 08/02/2013] [Indexed: 11/28/2022]
Abstract
Bluetongue (BT) is an infectious, arthropod-borne viral disease of domestic and wild ruminants caused by bluetongue virus (BTV), which is a double-stranded segmented RNA virus. Of the 26 confirmed BTV serotypes, 23 were reported in India based on the detection of antibodies or virus. In order to assess the prevalence of different serotypes in Andhra Pradesh, serum samples which were positive for BTV by group-specific antibody ELISA were subjected to type-specific neutralization of BTV serotypes 1, 2, 9, 10, 21 and 23. Of the 52 samples tested, 50.0, 44.23, 21.15, 26.92, 0, and 15.38 % neutralized BTV serotypes 1, 2, 9, 10, 21 and 23, respectively. However, 32.69 % of the ELISA positive sera could not neutralize any of these serotypes, indicating that there could be other serotype viruses (e.g., BTV-3 and -16) circulating in the State. This method can be used for surveillance of the circulating serotypes as well as for assessing the level of herd immunity, and assist in determining the vaccine strains to be used in multivalent vaccines.
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Affiliation(s)
- V Sairaju
- College of Veterinary Science, Sri Venkateswara Veterinary University, Hyderabad, 500030 India
| | - B Susmitha
- College of Veterinary Science, Sri Venkateswara Veterinary University, Hyderabad, 500030 India
| | | | - Nagendra R Hegde
- Ella Foundation, Genome Valley, Turkapally, Shameerpet Mandal, Hyderabad, 500078 India
| | - Keerti Meena
- Ella Foundation, Genome Valley, Turkapally, Shameerpet Mandal, Hyderabad, 500078 India
| | - Y Narasimha Reddy
- College of Veterinary Science, Sri Venkateswara Veterinary University, Hyderabad, 500030 India
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Pritchard LI, Sendow I, Lunt R, Hassan SH, Kattenbelt J, Gould AR, Daniels PW, Eaton BT. Genetic diversity of bluetongue viruses in south east Asia. Virus Res 2004; 101:193-201. [PMID: 15041187 DOI: 10.1016/j.virusres.2004.01.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2003] [Revised: 01/12/2004] [Accepted: 01/12/2004] [Indexed: 12/29/2022]
Abstract
Bluetongue viruses (BTV) were isolated from sentinel cattle in Malaysia and at two sites in Indonesia. We identified eight serotypes some of which appeared to have a wide distribution throughout this region, while others were only isolated in Malaysia or Australia. Nearly half of the 24 known BTV serotypes have now been identified in Asia. Further, we investigated the genetic diversity of their RNA segments 3 and 10. Using partial nucleotide sequences of the RNA segment 3 (540 bp) which codes for the conserved core protein (VP3), the BTV isolates were found to be unique to the previously defined Australasian topotype and could be further subdivided into four distinct clades or genotypes. Certain of these genotypes appeared to be geographically restricted while others were distributed widely throughout the region. Similarly, the complete nucleotide sequences of the RNA segment 10 (822 bp), coding for the non-structural protein (NS3/3A), were also conserved and grouped into the five genotypes; the BTV isolates could be grouped into three Asian genotypes and two Nth American/Sth African genotypes.
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Affiliation(s)
- L I Pritchard
- Australian Animal Health Laboratory, P.O. Bag 24, Geelong, Vic. 3220, Australia.
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Abstract
Bluetongue virus (BTV) is an arthropod-borne orbivirus that infects sheep, wild ruminants and occasionally cattle. Detection and specific identification of BTV is a multistep process. The first step involves the isolation of the virus from the animal's blood or other tissues, followed by inoculation of embryonating chicken eggs (ECE). After the virus has been amplified in ECE, it is passaged into BHK-21 cell culture for subsequent replication and identification. The virus is then amplified further and identified in microtiter plates by the immunoperoxidase assay using a group specific monoclonal antibody. Finally, the viral isolate is typed by a virus neutralization test.
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Affiliation(s)
- A Clavijo
- National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, Canada.
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