[1] Kagoshima Univ, Joint Fac Vet Med, Dept Vet Med, Lab Vet Publ Hlth, 1-21-24 Korimoto, Kagoshima 8900065, Japan
[2] Thai Nguyen Univ, Coll Econ & Technol, Grp 15, Thai Nguyen City, Thai Nguyen Pro, Vietnam
[3] Yamaguchi Univ, United Grad Sch Vet Sci, 1677-1 Yoshida, Yamaguchi 7538515, Japan
[4] Kagoshima Univ, Joint Fac Vet Med, Dept Vet Med, Lab Microbiol, 1-21-24 Korimoto, Kagoshima 8900065, Japan