Prevalence, incidence and geographical distribution of Johne's disease in cattle in England and the Welsh borders
Prevalence, incidence and geographical distribution of Johne's disease in cattle in England and the Welsh borders
复制标题
英格兰和威尔士边境牛约翰氏病的患病率、发病率和地理分布
DOI：
10.1136/vr.143.10.265
复制
发表时间：
1998
影响因子：
2.2
通讯作者：
Kenton L. Morgan
中科院分区：
文献类型：
--
作者：
Burhan Çetinkaya;H. M. Erdogan;Kenton L. Morgan
通过对3772名奶农的邮寄调查，确定了英格兰和威尔士边境地区奶牛约翰氏病的患病率、发病率和地理分布。研究区分为三个区域;南部，中部和北部。答复率为78.3%，报告“曾经”发生过这种疾病的农场比例为17.4%，在1985至1994年的10年中，这一比例为4.9%，而在1993年和1994年，这一比例分别为1.5%和1.3%。流行率最高的总是南方。1993年和1994年，所有牛群的临床发病率均为3.0/10，000牛-年，感染牛群的发病率分别为16.7和22.8/1000牛-年。通过将临床体征报告与阳性兽医或兽医调查中心诊断进行比较，获得了农民诊断标准有效性的估计。95.3%的农民报告了一种或另一种正确的临床症状，70.6%的农民报告了两种正确的症状（腹泻和体重减轻）。
The prevalence, incidence and geographical distribution of clinical Johne's disease in dairy cattle in England and the border regions of Wales were determined by a postal survey of 3772 dairy farmers. The study area was divided into three regions; south, central and north. The response rate was 78.3 per cent. The proportion of farms that reported ‘ever’ having the disease was 17.4 per cent. For the 10 years between 1985 and 1994 it was 4.9 per cent, and only 1.5 and 1.3 per cent in 1993 and 1994 respectively. The highest prevalence figures were always in the south. The incidence rate of clinical disease was 3.0/10,000 cow-years in both years in all herds and 16.7 and 22.8/1000 cow-years in infected herds in 1993 and 1994 respectively. An estimate of the criterion validity of diagnosis by farmers was obtained by comparing the reporting of the clinical signs with positive veterinary or veterinary investigation centre diagnoses. The proportion of farmers reporting one or other of the correct clinical signs was 95.3 per cent, and 70.6 per cent reported both correct signs (diarrhoea and weight loss).