Porcine epizootic abortion and respiratory syndrome pears .
猪流行性流产及呼吸道综合征。
The worldwide epizootic will not decrease immediately .
这个世界范围的家畜流行病不会很快减少。
Epizootic research center , equine research institute , japan racing association .
日本中央竞马会竞走马合研究所。
Microbiology division , epizootic research center , equine research institute , japan racing association .
日本中央竞马会竞走马合研究所木支所。
Objective to investigate the population composition and quantitive dynamics in weichang county , to collect test materials , to carry out plague epizootic survey .
