Serological survey of heartwater relative to the distribution of the vector Amblyomma variegatum and other tick species in north Cameroon
Serological survey of heartwater relative to the distribution of the vector Amblyomma variegatum and other tick species in north Cameroon
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DOI：
10.1016/s0304-4017(96)01058-8
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发表时间：
1997-01-01
影响因子：
2.6
通讯作者：
Awa, DN
中科院分区：
文献类型：
--
作者：
Awa, DN
研究了喀麦隆北部绵羊和山羊体内变态滴虫(Amblyomma Variegatum)和其他硬蜱的时空分布，同时用竞争酶联免疫吸附试验(EL ISA)对同一群绵羊和山羊的心水进行了血清学调查，发现白纹伊蚊(Amblyomma Variegatum)是最主要的种类，占采集的全部硬蜱的48.3%。其他已鉴定的物种包括：硫状轮虫、新月轮虫、轮虫、脱色牛鞭毛虫、环状轮虫、两面体透明线虫和元宝菇。在6-12月期间，北方和远北省份南部的平均降雨量在800毫米以上，有必要控制扁虱。心水血清学表明，该病似乎是地方性疾病，对反胃考德里虫抗体的平均流行率为61-67%。抗体流行率与变态螺旋体的存在高度相关(P<；0.001)。通过自然暴露在媒介环境中，可以研究无闭角瘤地区的动物对心脏水的易感性。
A study was carried out on the spatial and temporal distribution of Amblyomma variegatum and other ticks infesting sheep and goats in northern Cameroon, A serological survey of heartwater (cowdriosis) using a competitive ELISA was concurrently carried out in the same flocks, A. variegatum was found to be the most predominant species accounting for 48.3% of all the ticks collected. Other species identified included Rhipicephalus sulcatus, R. lunulatus, R. turanicus, Boophilus decoloratus, B. annulatus, Hyalomma nitidum and H. truncatum. Tick control was found to be necessary between June and December in the North and in the southern part of the Far North Provinces with annual rainfall average of 800 mm and above. Heartwater serology indicated that the disease appears to be endemic with a mean prevalence of antibodies to Cowdria ruminantium of 61-67%. Antibody prevalence was highly associated with the presence of A. variegatum (P < 0.001). Studies of the susceptibility of animals from Amblyomma-free areas to heartwater through natural exposure to the vector are envisaged.