White F H, Sulzer K R, Engel R W
Am J Vet Res. 1982 Jul;43(7):1172-3.
Kidneys were cultured for leptospires and blood was collected for leptospiral serologic examination from 306 cattle slaughtered in Florida during June, July, and August 1980. Leptospires were found in 82(36%) of 226 otherwise bacterial-free cultures. Forty-five isolates were identified as Leptospira interrogans serovar hardjo, 3 as serovar balcanica, and 3 as serovar pomona. Leptospiral antibodies were found in 218 (71%) of the cattle. Serum titers to hardjo were found in 162 cattle (53%) and to pomona in 28 (9%). Low titers to tarassovi were found in 14 cattle (4.5%).
1980年6月、7月和8月期间，从佛罗里达州屠宰的306头牛身上采集肾脏用于培养钩端螺旋体，并采集血液用于钩端螺旋体血清学检查。在226份无其他细菌的培养物中，有82份（36%）发现了钩端螺旋体。45株分离株被鉴定为问号钩端螺旋体哈焦血清型，3株为巴尔干血清型，3株为波摩那血清型。在71%（218头）的牛中发现了钩端螺旋体抗体。162头牛（53%）血清对哈焦血清型呈阳性，28头牛（9%）对波摩那血清型呈阳性。14头牛（4.5%）对塔拉索夫血清型呈低滴度阳性。
