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Seroprevalence of five arboviruses in sentinel cattle as part of nationwide surveillance in South Korea, 2009-2012.

Kim YH, Oem JK, Lee EY, Lee KK, Kim SH, Lee MH, Park SC - J. Vet. Med. Sci. (2014)

Bottom Line: In 2009, 2011 and 2012, the seropositive rates for these five arboviruses were all less than 14.1%.High seropositive rates were also associated with a large-scale outbreak of Akabane viral encephalomyelitis in cattle in southern Korea in 2010.Continued seroprevalence surveillance will be useful for monitoring natural arboviral diseases.

View Article: PubMed Central - PubMed

Affiliation: Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, MAFRA, Anyang 430-757, Republic of Korea.

ABSTRACT
To investigate the possible circulation of arboviruses in South Korea, nationwide surveillance of five arbovirues was conducted in sentinel calves during 2009-2012. We used serum neutralization tests to investigate the presence of antibodies for the Aino virus, Akabane virus, bovine ephemeral fever virus, Chuzan virus and Ibaraki virus. In 2009, 2011 and 2012, the seropositive rates for these five arboviruses were all less than 14.1%. In 2010, however, the seropositive rates for Aino virus and Akabane virus were 33.2% and 40.2%, respectively. High seropositive rates were also associated with a large-scale outbreak of Akabane viral encephalomyelitis in cattle in southern Korea in 2010. Continued seroprevalence surveillance will be useful for monitoring natural arboviral diseases.

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Related in: MedlinePlus

Number of cattle sampled in each province of South Korea. Serum was collected from same individual in May and October of each year from 2009 to 2012 for serosurveillance of viruses. Numbers in parentheses represent sample size. Bold characteristics represent the province of South Korea.
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fig_001: Number of cattle sampled in each province of South Korea. Serum was collected from same individual in May and October of each year from 2009 to 2012 for serosurveillance of viruses. Numbers in parentheses represent sample size. Bold characteristics represent the province of South Korea.

Mentions: The study was carried out in all provinces and metropolitan cities of the Republic of Korea. In May and October of each year from 2009 through 2012, blood samples were collected from 500 unvaccinated Korean calves, yielding 1,000 blood samples annually. In May, the sampled cattle were 6−7 months of age. Samples were again collected in October of each year, following the season of vector activity from June to August. These samples were compared to the samples collected from the same individuals in May of that year. The necessary sample size was calculated using Win Episcope 2.0: 475 cattle were required to analyze the nationwide arboviral prevalence, based on an error of 4.5%, 95% confidence and 50% expected prevalence. Sampling locations are shown in Fig. 1Fig. 1.


Seroprevalence of five arboviruses in sentinel cattle as part of nationwide surveillance in South Korea, 2009-2012.

Kim YH, Oem JK, Lee EY, Lee KK, Kim SH, Lee MH, Park SC - J. Vet. Med. Sci. (2014)

Number of cattle sampled in each province of South Korea. Serum was collected from same individual in May and October of each year from 2009 to 2012 for serosurveillance of viruses. Numbers in parentheses represent sample size. Bold characteristics represent the province of South Korea.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4363032&req=5

fig_001: Number of cattle sampled in each province of South Korea. Serum was collected from same individual in May and October of each year from 2009 to 2012 for serosurveillance of viruses. Numbers in parentheses represent sample size. Bold characteristics represent the province of South Korea.
Mentions: The study was carried out in all provinces and metropolitan cities of the Republic of Korea. In May and October of each year from 2009 through 2012, blood samples were collected from 500 unvaccinated Korean calves, yielding 1,000 blood samples annually. In May, the sampled cattle were 6−7 months of age. Samples were again collected in October of each year, following the season of vector activity from June to August. These samples were compared to the samples collected from the same individuals in May of that year. The necessary sample size was calculated using Win Episcope 2.0: 475 cattle were required to analyze the nationwide arboviral prevalence, based on an error of 4.5%, 95% confidence and 50% expected prevalence. Sampling locations are shown in Fig. 1Fig. 1.

Bottom Line: In 2009, 2011 and 2012, the seropositive rates for these five arboviruses were all less than 14.1%.High seropositive rates were also associated with a large-scale outbreak of Akabane viral encephalomyelitis in cattle in southern Korea in 2010.Continued seroprevalence surveillance will be useful for monitoring natural arboviral diseases.

View Article: PubMed Central - PubMed

Affiliation: Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, MAFRA, Anyang 430-757, Republic of Korea.

ABSTRACT
To investigate the possible circulation of arboviruses in South Korea, nationwide surveillance of five arbovirues was conducted in sentinel calves during 2009-2012. We used serum neutralization tests to investigate the presence of antibodies for the Aino virus, Akabane virus, bovine ephemeral fever virus, Chuzan virus and Ibaraki virus. In 2009, 2011 and 2012, the seropositive rates for these five arboviruses were all less than 14.1%. In 2010, however, the seropositive rates for Aino virus and Akabane virus were 33.2% and 40.2%, respectively. High seropositive rates were also associated with a large-scale outbreak of Akabane viral encephalomyelitis in cattle in southern Korea in 2010. Continued seroprevalence surveillance will be useful for monitoring natural arboviral diseases.

Show MeSH
Related in: MedlinePlus