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J Vet Sci. 2007 Mar;8(1):45-49 |
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Sero-survey on Aino, Akabane, Chuzan, bovine ephemeral fever and Japanese encephalitis virus of cattle and swine in Korea
Seong In Lim, Chang Hee Kweon*, Dong Seob Tark, Seong Hee Kim, Dong Kun Yang |
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National Veterinary Research and Quarantine Service, Ministry of Agriculture and Forestry, Anyang 430-824, Korea
* kweonch@nvrqs.go.kr |
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Vector-borne arboviruses produce mild to severe
symptoms in domestic animals. Bovine ephemeral fever
(BEF), Akabane, Aino, and Chuzan virus have been
primarily attributed to reproductive disorders or febrile
diseases in cattle, and Japanese encephalitis virus (JEV) is
mainly associated with reproductive failures in swine. We
investigated antibody titers from domestic swine against
four bovine arboviruses (BEF, Akabane, Aino, and Chuzan
virus) and from cattle against JEV in Korea. While the
positive rates for Akabane and BEF were 37.4% and
15.7%, the positive incidence of Chuzan and Aino were
relatively low, with positive rates of 3.04% and 0.4%,
respectively, based on a virus neutralization assay. Antibody
titers against more than one virus were also frequently
detected in domestic swine. The incidence of JEV was
51.3% among domestic cattle. In addition, one positive
case was detected in the thoracic fluids from 35 aborted
calves, based on the hemagglutination inhibition test. Our
results indicate that swine are susceptible hosts of bovine
arboviruses without showing clinical symptoms in a
natural environment. Moreover, we confirmed that JEV
could be associated with reproductive failure in pregnant
cattle, as were other vector-borne bovine arboviruses
assessed in this study.
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