Catarrhal fever is any of several respiratory or oral diseases of livestock such as bluetongue in horses and sheep.
卡他热是几类家禽呼吸性或口腔性疾病中的任何一种疾病，如马和羊的蓝舌病。
2
The disease characterized by high fever, cough, serous and fibrinous inflammation of the lungs and pleura with a high mortality rate, is harm to the sheep industry.