Prevalence of and risk factors involved in the spread of neonatal bovine cryptosporidiosis in Galicia (NW Spain)
Prevalence of and risk factors involved in the spread of neonatal bovine cryptosporidiosis in Galicia (NW Spain)
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DOI：
10.1016/s0304-4017(02)00036-5
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发表时间：
2002-05-30
影响因子：
2.6
通讯作者：
Ares-Mazás, E
中科院分区：
文献类型：
--
作者：
Castro-Hermida, JA;González-Losada, YA;Ares-Mazás, E
在加利西亚（西班牙西北部）的农场进行了一项流行病学研究，以调查小于3周龄小牛中隐孢子虫感染传播的患病率和相关风险因素。2000年1月至12月期间，每21天访问一次共22个养牛场（10个肉牛群和12个奶牛群）。在研究期间，直接从出生的844头小牛的直肠中采集粪便样本。对每份样本进行肉眼研究，以确定其为液体、软质或固体的稠度，并观察是否存在粘液或血液。C.通过直接显微镜检查鉴定细小卵囊，并半定量地确定感染强度为轻微、中度或重度。在844头小牛中，发现404头在粪便中有寄生虫，即患病率为47.9%。风险因素的统计分析，如农场的一般特征和小牛的住房条件，揭示了三个变量，显着影响隐孢子虫感染的风险在哺乳小牛：清洁的方法，地板的类型和清洁的频率。(C)2002 Elsevier Science B.V.保留所有权利。
An epidemiological study was carried out on farms in Galicia (NW Spain) to investigate the prevalence of and the risk factors associated with the spread of infection by Cryptosporidium parvum in calves of less than 3 weeks of age. A total of 22 cattle farms (10 beef herds and 12 dairy herds) were visited once every 21 days between January and December 2000. A faecal sample was collected directly from the rectum of each of the 844 calves born, during the study period. Each sample was studied macroscopically to establish its consistency as liquid, soft or solid, and the presence of mucus or blood noted. C. parvum oocysts were identified by direct microscopic examination and the intensity of infection established semiquantitatively as slight, moderate or severe. Of the 844 calves, 404 were found to have the parasite in their faeces, i.e. the prevalence was 47.9%. Statistical analysis of the risk factors such as general characteristics of the farm and the housing conditions of the calves, revealed three variables that significantly effect the risk of cryptosporidial infection in suckling calves: the method of cleaning, the type of flooring and the frequency of cleaning. (C) 2002 Elsevier Science B.V. All rights reserved.