Table 3.
Prevalence of Immunoglobulin M Antibodies Against West Nile Virus (WNV) in 2601 Sera from Horses Between 2007 and 2009 in South Korea
| |
2007 |
2008 |
2009 |
Total |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Locality | No. of samples | WNV IgM+ | % | No. of samples | WNV IgM+ | % | No. of samples | WNV IgM+ | % | No. of samples | WNV IgM+ | % |
| Gangwon | 19 | 0 | 25 | 0 | 18 | 2 | 11.1 | 62 | 2 | 3.2 | ||
| Gyeonggi | 514 | 14 | 2.7 | 311 | 12 | 3.9 | 192 | 2 | 1.0 | 1017 | 28 | 2.8 |
| Gyeongnam | 0 | 0 | 0 | 0 | 10 | 0 | 10 | 0 | ||||
| Gyeongbuk | 9 | 0 | 2 | 0 | 15 | 0 | 26 | 0 | ||||
| Busan | 301 | 14 | 4.7 | 157 | 8 | 5.1 | 100 | 4 | 4.0 | 558 | 26 | 4.7 |
| Jeonnam | 0 | 0 | 4 | 0 | 9 | 0 | 13 | 0 | ||||
| Jeonbuk | 77 | 0 | 130 | 4 | 3.1 | 46 | 2 | 4.3 | 253 | 6 | 2.4 | |
| Jeju | 49 | 2 | 4.1 | 452 | 12 | 2.7 | 141 | 2 | 1.4 | 642 | 16 | 2.5 |
| Chungbuk | 0 | 0 | 4 | 0 | 16 | 0 | 20 | 0 | ||||
| Total | 969 | 30 | 3.1 | 1,085 | 36 | 3.3 | 547 | 12 | 2.2 | 2601 | 78 | 3.0 |
None of the WNV-IgM-positive samples was confirmed to be WNV infected during the period of this study. They were confirmed to be Japanese encephalitis virus-positive or other unknown (unidentified or undetermined) flavivirus-positive.
IgM, immunoglobulin M.