Baulu J, Everard C O, Everard J D
J Wildl Dis. 1987 Jan;23(1):60-6. doi: 10.7589/0090-3558-23.1.60.
Agglutinins to Leptospira were found at titers of greater than or equal to 1:100 in 150 of 501 (29.9%) vervet monkeys (Cercopithecus aethiops sabaeus) bled within 1 mo of capture in Barbados. Including a further 34 of 145 bled within 1 yr of capture, the seropositivity prevalence was 28.5%. A further 35 monkeys (5.4%) had traces of agglutinins or gave titers of 1:50. The proportion of seropositive adults (41.5%) was more than twice that of seropositive immature monkeys (17.6%). Among adults, 49.2% of males and 35.7% of females were seropositive, while among juveniles proportions of seropositive males and females were similar (17.8% and 17.4%, respectively). Seropositivity prevalences tended to increase in proportion to rainfall. In each of 165 of the 184 positive sera, a single serogroup predominated in the serological reactions. These serogroups were Ballum (61%), Icterohaemorrhagiae (16%), Autumnalis (15%), Pyrogenes, Panama, Pomona, Tarassovi and Canicola (8% altogether). In the other 19 positive sera no single serogroup predominated. Serial bleeding showed that vervet monkeys can retain naturally-acquired antibodies to Leptospira for at least 2.5 yr. The evidence suggests that vervet monkeys in Barbados are transmitting leptospiral infections among themselves independently of other groups of animals, and are not a major source of human leptospirosis.
在巴巴多斯捕获后1个月内采血的501只黑长尾猴（非洲绿猴指名亚种）中，有150只（29.9%）检测到抗钩端螺旋体凝集素效价大于或等于1:100。包括捕获后1年内采血的另外145只中的34只，血清阳性率为28.5%。另有35只猴子（5.4%）有凝集素痕迹或效价为1:50。血清阳性成年猴的比例（41.5%）是血清阳性未成年猴比例（17.6%）的两倍多。在成年猴中，49.2%的雄性和35.7%的雌性血清呈阳性，而在幼年猴中，血清阳性的雄性和雌性比例相似（分别为17.8%和17.4%）。血清阳性率往往与降雨量成正比。在184份阳性血清中的165份中，每种血清学反应中单一血清群占主导。这些血清群为拜伦群（61%）、出血性黄疸群（16%）、秋季群（15%）、热群、巴拿马群、波摩那群、塔拉索夫群和犬群（共8%）。在另外19份阳性血清中，没有单一血清群占主导。连续采血显示，黑长尾猴可至少2.5年保持对钩端螺旋体的自然获得性抗体。证据表明，巴巴多斯的黑长尾猴在其自身群体中传播钩端螺旋体感染，与其他动物群体无关，且不是人类钩端螺旋体病的主要来源。
