About the Authors

Shuo Liu

Contributed equally to this work with: Shuo Liu, Kang Ji

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Kang Ji

Contributed equally to this work with: Shuo Liu, Kang Ji

Affiliations The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China, College of Veterinary Sciences, University of Northeastern China, Harbin, China

Jiming Chen

jmchen66@yahoo.cn

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Di Tai

Affiliations The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China, College of Veterinary Sciences, University of Northeastern China, Harbin, China

Wenming Jiang

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Guangyu Hou

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Jie Chen

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Jinping Li

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Baoxu Huang

Affiliation The Laboratory of Animal Epidemiological Surveillance, China Animal Health & Epidemiology Center, Qingdao, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JC. Performed the experiments: SL KJ JC DT. Analyzed the data: SL KJ JC DT WJ GH JC JL BH. Wrote the paper: JC.