共查询到19条相似文献,搜索用时 78 毫秒
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丛维国 《国外畜牧学(猪与禽)》2004,24(2):42-45
本简述了引起人类SARS的病毒及其在野生动物的存在、向别种动物的传播以及对其进行防制的可能性。对于养禽业来说,一个好消息就是:SARS病毒并非源于家禽。然而,令人关注的是,在家禽中可找到其它冠状病毒。此外,我们从传染性支气管炎病毒得到的教训表明,在不久的将来再来一次SARS爆发的话我们是否就能有疫苗可用,是很值得怀疑的。 相似文献
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2002年冬季至2003年春季,全球32个国家和地区的人群中发生和流行了一种发病急、传染性强,以发热、干咳、肺部发生特征性病变为主要病症的传染病。导致数百人死亡、数千人感染、亿万人恐慌,引起世界各国科学家的极大关注。这是一种什么病、由什么病原引发的现已基本清楚,我国将该 相似文献
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本文对由病毒引起的人类严重急性呼吸综合征(SARS,即“非典型性肺炎”)及其在野生动物中的存在、向其他动物的传播以及对控制本病的可能性进行了回顿,现已弄清,SARS病毒不是源于家禽。这对养禽业来说,无疑是一个好消息。令人关心的是,还有一些冠状病毒可能从鸟类中被辨认出来,而且,由(鸡)传染性支气管炎得到的一些知识启发我们,一旦在不久的将来再次爆发SARS,是否能有一种疲劳可以使用。 相似文献
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MichaelMeredith 《当代畜禽养殖业》2003,(7):J048-J048
美国国家过敏与传染病中心主任Anthony Fauci向美国国会陈述疫苗用于治疗猪病毒性呼吸道疾病的经验证明疫苗可能有助于治疗人严重流行性呼吸综合症(SARS)。 SARS病例的数量在全世界以很快的速度增长,明显地是以空气传播。许多实验室从SARS病例分离出一种新的冠状病毒。通常人冠状病毒引起中度的上呼吸道感染,但是这种新病毒引起严重的肺炎症状,并伴随着很高的致死率。 Fauci认为防治普通的动物冠状病毒 相似文献
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新型冠状病毒检测方法研究进展 总被引:1,自引:0,他引:1
新型冠状病毒(Severe acute respiratory syndrome coronavirus 2,SARS?CoV?2)传播能力强,易感动物种类多.目前,已出现多种变异株,可能存在逃脱现有疫苗保护的风险.认识人与动物界及其与疾病传播的相关性仍然是许多新兴的人畜共患病的关键控制点.本文简述了SARS?CoV?... 相似文献
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传染性非典型肺炎病原学研究进展 总被引:2,自引:0,他引:2
传染性非典型肺炎 (SARS)为我国新发现的一种人类传染病 ,具有高度传染性 ,以体温升高、咳嗽和急性纤维素性肺炎为特征。病原学研究发现其主要病原为一种新的冠状病毒。病毒具有冠状病毒典型的形态特征 ,可在VeroE6细胞上增殖 ,并产生细胞病变。病毒基因组为单股RNA ,大小约为 2 9 8kb ,有 1 5个阅读框 ,与已知冠状病毒基因同源性为 56 %~ 63 %。猫传染性腹膜炎病毒、人呼吸道冠状病毒及猪传染性胃肠炎病毒抗血清与该病毒有部分交叉反应性。根据病毒基因序列和致病性 ,推测它可能由某动物病毒突变而来。目前 ,实验室诊断方法有ELISA、IFA、RT PCR和Real timePCR等。 相似文献
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The relationship of severe acute respiratory syndrome coronavirus with avian and other coronaviruses
Jackwood MW 《Avian diseases》2006,50(3):315-320
In February 2003, a severe acute respiratory syndrome coronavirus (SARS-CoV) emerged in humans in Guangdong Province, China, and caused an epidemic that had severe impact on public health, travel, and economic trade. Coronaviruses are worldwide in distribution, highly infectious, and extremely difficult to control because they have extensive genetic diversity, a short generation time, and a high mutation rate. They can cause respiratory, enteric, and in some cases hepatic and neurological diseases in a wide variety of animals and humans. An enormous, previously unrecognized reservoir of coronaviruses exists among animals. Because coronaviruses have been shown, both experimentally and in nature, to undergo genetic mutations and recombination at a rate similar to that of influenza viruses, it is not surprising that zoonosis and host switching that leads to epidemic diseases have occurred among coronaviruses. Analysis of coronavirus genomic sequence data indicates that SARS-CoV emerged from an animal reservoir. Scientists examining coronavirus isolates from a variety of animals in and around Guangdong Province reported that SARS-CoV has similarities with many different coronaviruses including avian coronaviruses and SARS-CoV-like viruses from a variety of mammals found in live-animal markets. Although a SARS-like coronavirus isolated from a bat is thought to be the progenitor of SARS-CoV, a lack of genomic sequences for the animal coronaviruses has prevented elucidation of the true origin of SARS-CoV. Sequence analysis of SARS-CoV shows that the 5' polymerase gene has a mammalian ancestry; whereas the 3' end structural genes (excluding the spike glycoprotein) have an avian origin. Spike glycoprotein, the host cell attachment viral surface protein, was shown to be a mosaic of feline coronavirus and avian coronavirus sequences resulting from a recombination event. Based on phylogenetic analysis designed to elucidate evolutionary links among viruses, SARS-CoV is believed to have branched from the modern Group 2 coronaviruses, suggesting that it evolved relatively rapidly. This is significant because SARS-CoV is likely still circulating in an animal reservoir (or reservoirs) and has the potential to quickly emerge and cause a new epidemic. 相似文献
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Kariwa H Noda H Nakauchi M Ishizuka M Hashiguchi K Hashimoto S Yoshii K Asano A Agui T Kogaki H Kurano Y Uchida Y Fujii N Okada M Takashima I 《The Japanese journal of veterinary research》2008,55(4):115-127
The sudden emergence of severe acute respiratory syndrome (SARS) at the end of 2002 resulted in 774 reported deaths from more than 8000 cases worldwide. As no effective vaccines or antiviral agents are available, the most effective measure to prevent the expansion of a SARS epidemic is the rapid diagnosis and isolation of SARS patients. To establish specific diagnostic methods, we generated nine clones of monoclonal antibodies to nucleocapsid protein (NP) of SARS-coronavirus (SARS-CoV). On immunofluorescent antibody assay and Western blotting analysis, none of the monoclonal antibodies showed cross-reactivity to authentic and recombinant NPs of human coronavirus (HCoV) 229E strain. To determine the region on the NP molecule where the monoclonal antibodies bind, we generated four truncated recombinant NPs and analyzed the reactivity between monoclonal antibodies and truncated NPs. Two monoclonal antibodies reacted with a truncated NP covering from amino acid residues 111 to 230, and seven reacted with another truncated NP covering from amino acid residues 221 to 340. Epitope mapping analysis indicated that monoclonal antibody SN5-25 recognized the amino acid sequence Q(245)TVTKK(250) On SARS-NP. Within the epitope, Q245, T246, V247, K249, and K250 appeared to form an essential motif for monoclonal antibody SN5-25 to bind. The information about binding sites and epitopes of monoclonal antibodies may be useful for the development of new diagnostic methods for SARS and for analyzing the function of N protein of SARS-CoV. 相似文献
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布鲁氏菌病(Brucellosis)也称作“马尔他热”、 “地中 海热”或“波状热”,是由布鲁氏菌引起的一种人兽共患 的传染病,严重危害人类健康和畜牧业发展。 相似文献
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Genta ITO Yuko GOTO-KOSHINO Yudai KURODA Park EUNSIL Ken MAEDA Takehisa SOMA Yasuyuki MOMOI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(11):1722
We investigated the seroprevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among dogs in the Tokyo area via enzyme-linked immunosorbent assay (ELISA) using the spike protein as the target antigen. Plasma samples from 494 household dogs and blood-donor dogs were tested from July 2020 to January 2021. Of these samples, three showed optical densities that were higher than the mean plus two standard deviations of the mean of the negative-control optical densities (ODs). Of these three samples, only the sample with the highest OD by ELISA was confirmed positive by virus neutralization testing. The positive dog presented no SARS-CoV-2-related symptoms. The positivity rate of SARS-CoV-2 infections among dogs in the Tokyo area was approximately 0.2%. 相似文献