Hathaway S C, Little T W, Stevens A E
Res Vet Sci. 1981 Sep;31(2):169-73.
A total of 597 pigs were examined for serological and bacteriological evidence of leptospiral infection. The sample comprised 189 porkers, 205 baconers and 203 sows. Sera were tested against 17 antigens from 16 serogroups and the overall prevalence of titres was 15.7 per cent. The lowest prevalence of titres was found in porkers (10.0 per cent). The highest prevalence of titres to an individual antigen was recorded with bratislava, a member of the Australis serogroup, with 12.2 per cent of pigs positive. Copenhageni titres were present in 1.8 per cent of the sera and sporadic titres were recorded to various other antigens. Leptospires were isolated from five pigs. Four isolates were identified as belonging to the Icterohaemorrhagiae serogroup and one to the Hebdomadis serogroup. The serological to bacteriological ratio for the Icterohaemorrhagiae serogroup was 11:4. The virtual absence of titres to pomona and tarassovi, the two serovars most commonly maintained by porcine populations in other countries, confirms the results of earlier serological surveys.
共对597头猪进行了钩端螺旋体感染的血清学和细菌学检测。样本包括189头育肥猪、205头腌肉用猪和203头母猪。血清针对来自16个血清群的17种抗原进行检测，总体滴度患病率为15.7%。育肥猪的滴度患病率最低（10.0%）。对个体抗原滴度患病率最高的是澳洲血清群的成员布拉迪斯拉发，12.2%的猪呈阳性。哥本哈根型滴度出现在1.8%的血清中，对其他各种抗原也记录到了散在的滴度。从5头猪中分离出了钩端螺旋体。4株分离株被鉴定为属于出血性黄疸型血清群，1株属于七日热型血清群。出血性黄疸型血清群的血清学与细菌学比例为11:4。在其他国家猪群中最常见的两个血清型波摩那型和塔拉索夫型几乎没有滴度，这证实了早期血清学调查的结果。
