Davies G
Veterinary Research Laboratories, Kabete, Kenya.
Vet Microbiol. 1993 Feb;34(2):103-21. doi: 10.1016/0378-1135(93)90165-4.
Bovine petechial fever is a Rickettsial disease of cattle, which has been diagnosed, only in Kenya, East Africa. Other countries in the region share some of the biotopes in which the disease occurs, and may well have the infection. The disease is characterised by widespread petechial and ecchymotic haemorrhages on the mucosal surfaces, and throughout the serosal and subserosal surfaces of the body organs and cavities. It may be fatal in up to 50% of untreated cases. The causal organism may be demonstrated most readily in the cytoplasm of polymorphonuclear granulocytes of the peripheral blood, as well as other leucocytes, and has been classified as Cytoecetes ondirii, a member of the tribe Ehrlichiae. Circumstantial and other evidence suggests that the disease is transmitted by an arthropod vector, which has yet to be identified. The blood of a naturally infected wild ruminant, the bushbuck, Tragelaphus scriptus has been shown to remain infective for at least 2 years, and other species such as the African buffalo, Syncercus caffer for at least 5 weeks. These and possibly other species, may serve as the amplifying and reservoir hosts.
牛点状热是牛的一种立克次氏体病，仅在东非的肯尼亚被诊断出来。该地区的其他国家有一些该病发生的生物群落，很可能也有这种感染。该病的特征是在粘膜表面以及身体器官和体腔的浆膜和浆膜下表面广泛出现点状和瘀斑性出血。在未经治疗的病例中，高达50%可能会致命。致病生物体最容易在外周血多形核粒细胞以及其他白细胞的细胞质中被发现，并已被归类为翁氏细胞埃里希体，属于埃里希体族的一员。间接证据和其他证据表明，该病由一种尚未确定的节肢动物媒介传播。已证明自然感染的野生反刍动物丛林羚（Tragelaphus scriptus）的血液至少在2年内具有传染性，而其他物种如非洲水牛（Syncercus caffer）的血液至少在5周内具有传染性。这些以及可能的其他物种可能作为扩增宿主和储存宿主。
