[1] Natl Vet Res & Quarantine Serv, Minist Agr & Forestry, Anyang 430824, South Korea
[2] Kyungpook Natl Univ, Coll Vet Med, Taegu, South Korea
[3] Natl Inst Hlth, Ctr Infect Dis, Div Enter Bacteria Infect, Seoul, South Korea
[4] Gyeongsang Natl Univ, Coll Vet Med, Jinju, South Korea