共查询到19条相似文献，搜索用时 750 毫秒
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猪流行性乙型脑炎．是由乙型脑炎病毒（JEV）引起的人畜共患传染病。人感染JEV后临床表现主要为高热、昏睡、抽搐、狂暴和沉郁等脑炎症状,以仔猪多发。猪感染JEV后常引起母猪早产、流产或产死胎,公猪发生睾丸炎。猪是JEV的主要扩增宿主和传染源．人乙脑疫情发生与猪乙脑发生有关．因此猪乙脑具有公共卫生意义。我国是养猪大国．也是猪乙脑高流行区．加之全球气候变暖步伐加快,猪乙脑的危害有不断扩大之势．因此应高度重视猪乙脑的防制。现就猪乙脑的临床症状、诊断方法及防制措施等概述如下。 相似文献
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根据猪乙脑病毒SA14-14-2毒株的基因组序列,采用Primer5.0引物设计软件,设计1对乙脑病毒特异性引物,建立了检测猪乙脑病毒的的RT-PCR方法,利用合成的引物对乙型脑炎病毒（JEV）、猪瘟病毒（CSFV）和猪繁殖与呼吸综合征病毒（PRRSV）进行RT-PCR扩增,结果仅JEV能扩增出819bp大小的特异性片段,证实了建立的RT-PCR对乙型脑炎病毒具有较高的特异性。灵敏试验表明,检测JEV的RT-PCR的最小灵敏度能够达到纳克（ng）级别。该方法的建立,对于准确快速检测JEV提供了依据。 相似文献
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靳国旺 《上海畜牧兽医通讯》2009,(3):54-55
乙型脑炎病毒又称日本脑炎病毒（Japanese Encephalitis Virus，JEV），简称乙脑病毒，属于黄病毒科（Flaviridae）黄病毒属，所引起的疾病简称乙脑，最为常见的以三带嚎库蚊为主要传播媒介的病毒性脑炎，是严重威胁人畜健康的一种中枢神经系统的急性传染病。具有明显的季节性和一定的地理分布区域，多发生于蚊虫较多的夏秋季节，属于自然疫源性疾病。猪是乙脑病毒的重要储存宿主和扩增宿主，是乙型脑炎的主要传染源，是引起母猪繁殖障碍的主要病原之一， 相似文献
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猪日本乙型脑炎义称流行性乙型脑炎,是由日本脑炎病毒引起的一种急性、人兽共患虫媒传染病。乙型脑炎对人类（特别是儿童）的中枢神经系统危害巨大。猪是乙脑的重要传染源和储存宿主,通常乙脑病毒的感染呈现猪．蚊．人链状条。乙脑也是导致种猪繁殖障碍的重要元凶之一,病猪主要表现妊娠母猪流产、产死胎,公猪睾丸肿大,少数猪有神经症状。 相似文献
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乙型脑炎病毒（简称乙脑，JBEV）是由乙脑病毒导致的中枢神经系统损伤的急性传染性疾病，蚊是传播媒介，猪是扩散宿主，夏秋季乙脑病毒在蚊一猪一蚊之间循环。猪乙型脑炎能引起母猪繁殖障碍，表现为妊娠母猪流产，产死胎、木乃伊胎、弱仔等，给养猪业带来巨大的经济损失。目前，养猪场预防猪乙脑除了搞好饲养管理和加强检疫、隔离、消毒外，最主要的预防措施是母猪配种前注射乙脑疫苗，但临床上普遍采用的是猪日本乙型脑炎减毒活疫苗，其免疫效果如何，研究报道甚少。试验采用乳胶凝集试验（LAT）检测免疫前后血清抗体水平，并以此评价猪乙型脑炎减毒活疫苗的免疫效果，为临床预防该病提供参考。 相似文献
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流行性乙型脑炎是由乙型脑炎病毒(JEV)引起的一种人畜共患病。本病多发于7~10月的蚊虫滋生、活动旺季,猪是该病毒的主要增殖宿主、扩散宿主和传染源。易感季节管理不善的猪群该病感染率极高,是夏秋季猪场的主要流行病,常呈散发性或地方性流行。1流行病学流行性乙型脑炎属自然疫源性疫病。JEV于上世纪50年代首先在日本分离获得,因此又称日本脑炎病毒。为与甲型脑炎区别,该病定名为流行性乙型脑炎,简称乙脑。 相似文献
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Japanese encephalitis B (JE) is a zoonosis caused by Japanese encephalitis virus which invades the central nervous system,infected by mosquito.Various animals could be the sower and reservoir of JE including swine,horse,cattle and avian.JE could cause a major public health trouble and a horrible crisis of the farm all in Asia and the Western Pacific region.Therefore,it is necessary to diagnose it rapidly and accurately.This review article made a sketch of approaches for the rapid serological assays of JE,including traditional method,emerging technologies and specific improvements of the assay,so as to provide references for the study of rapid,simple and accurate JE diagnose methods. 相似文献
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P M Ellis P W Daniels D J Banks 《Veterinary Clinics of North America: Equine Practice》2000,16(3):565-78, x-xi
Japanese encephalitis (JE) virus is a mosquito-borne flavivirus that can cause encephalitis and death in horses and humans. It is an emerging disease of international concern because it has been spreading into previously nonendemic areas. Major epidemics may occur where the virus moves into new areas, but many infections are subclinical. This article presents information on the virus, its epidemiology, and what little information has been published on the disease in horses. The methods available for the diagnosis and control of JE are described and issues raised, particularly for those countries faced with the threat of imminent incursions as the virus extends its range. 相似文献
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Japanese encephalitis (JE) is the single largest cause of viral encephalitis in the world and has been endemic in Nepal since the early 1980s. Since then, it has spread from its origins in lowland plains to the Kathmandu Valley as well as in hill and mountain districts. Pigs are amplifying hosts for the virus. The Nepal government has been encouraging the development of pig farming as a means of poverty alleviation. Whereas other countries have reduced JE through vaccination programmes and improvements in pig husbandry, these options are not economically possible in Nepal. The objective of this study was to examine the occupational risk of pig farmers in Nepal and to determine their level of knowledge and practice of JE prevention techniques. We surveyed 100 randomly selected pig farmers in the Kathmandu District and found that pig farmers were exposed to many JE risk factors including poverty and close proximity to pigs, rice paddy fields and water birds, which are the definitive hosts for the virus. Forty‐two percent of the farmers had heard of JE, 20% associated it with mosquito bites and 7% named pigs as risk factors. Few protective measures were taken. None of the farmers were vaccinated against JE nor were any pigs, despite an ongoing human vaccination campaign. This farming community had little ownership of land and limited education. JE education programmes must consider gender differences in access to public health information as there were an equal number of male and female farmers. We provide findings that can inform future JE education programmes for this vulnerable population. 相似文献
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猪乙型脑炎疫苗研究进展 总被引：1，自引：1，他引：0
猪乙型脑炎（Japanese encephalitis，JE）是由乙型脑炎病毒（JEV）引起的一种经蚊虫传播的人畜共患病，且是严重威胁人畜健康的一种中枢神经系统的急性传染病。猪是JEV的重要储存宿主和扩增宿主，同时也是乙型脑炎的主要传染源，可引起母猪繁殖障碍和公猪睾丸炎。人是JEV的终末宿主，特别是儿童，感染发病后，死亡率可达25%。目前，仍无有效药物治疗乙型脑炎感染，而其流行区域的扩大及其优势基因型的改变为JEV防控策略带来了新的挑战。近年来，随着基因工程和蛋白质工程的发展，以及对病毒分子结构和功能的深入研究，一些新技术新手段被应用到JEV疫苗研发中，基因工程亚单位疫苗、病毒样颗粒疫苗、嵌合病毒减毒活疫苗、多表位疫苗、DNA疫苗等应运而生。在疫苗制备过程中，培养工艺的优化、病毒抗原的纯化、新型佐剂和耐热保护剂的应用等生产工艺的提升策略，为保障JEV疫苗的质量提供了新方向。文章简述了猪JEV疫苗的使用现状及研发进展，旨在为研制更安全、有效的猪JEV疫苗提供参考依据。 相似文献
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云南省乙型脑炎病毒宿主和媒介研究 总被引：18，自引：0，他引：18
于１９７８年至１９９７年,从云南猪血液和乳猪脑组织中分离到乙型脑炎（ＪＥ）病毒５株,从蝙蝠脑组织中分得ＪＥ病毒１０株,从鸟类脑组织中分得ＪＥ病毒５株,从１５种蚊虫体内分离到ＪＥ病毒６３株,从２种蠓类中分得ＪＥ病毒２株。分析认为,猪是ＪＥ病毒的主要扩散宿主,蝙蝠和鸟类在该病毒保存和传播中起重要作用;三带喙库蚊是该病毒的主要传播媒介,伪杂鳞库蚊、霜背库蚊、蚊腿库蚊、白蚊伊和刺扰伊蚊为重要媒介,蠓类亦可 相似文献
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Yamanaka T Tsujimura K Kondo T Yasuda W Okada A Noda K Okumura T Matsumura T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2006,68(3):293-295
Japanese encephalitis (JE) developed in an unvaccinated half-bred horse kept in Tottori Prefecture, Japan. The animal showed ataxia with pyrexia and low appetite, and ultimately died. A viral strain was isolated from the cerebrum of the horse and was identified as JE virus (JEV) by RT-PCR using JEV specific primers. The isolated JEV was classified into genotype I by nucleotide sequence analysis of the viral envelope gene. We believe that this is the first report of the genotype I strain being isolated from a horse. 相似文献
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I Takashima N Hashimoto T Watanabe L Rosen 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1989,51(5):947-953
A study was conducted during 1985 and 1986 to evaluate the roles of mosquito species as possible vectors of Japanese encephalitis (JE) virus in Hokkaido. The number of Culex tritaeniorhynchus was very low among the four pig farms where outbreaks of abortion caused by JE virus were observed in swine populations. At one farm near Sapporo, only one Cx. tritaeniorhynchus was found among a total of 510 mosquitoes collected during the survey period from July to October 1985, even when JE virus activity among sentinel pigs was revealed by seroconversion. At another farm in the south, no individuals of this mosquito species were found among 987 mosquitoes collected at the time of the outbreaks of abortion. Cx. pipiens pallens, Anopheles species, Aedes vexans nipponii, and Ae. japonicus were predominant over Cx. tritaeniorhynchus. Cx. tritaeniorhynchus, almost a solve vector species of JE virus in the southern part of Japan, is probably not a vector of the virus in Hokkaido. The collected mosquitoes (2,332 from 1985 and 1,403 from 1986) were processed for virus isolation but no JE virus was isolated. More extensive field studies are necessary to provide further information on the role of mosquito species other than Cx. tritaeniorhynchus in the transmission of JE virus in the northern limits of its range including Hokkaido. 相似文献