Porcine Reproductive and Respiratory Syndrome
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چکیده
Porcine reproductive and respiratory syndrome (PRRS) is characterised by reproductive failure of sows and respiratory problems of piglets and growing pigs. The disease is caused by the PRRS virus, a virus currently classified as a member of the order Nidovirales, family Arteriviridae, genus Arterivirus. The primary target cell of the virus is the alveolar macrophage of the pig. Two major antigenic types of the virus exist, the European and the American type. The virus is primarily transmitted via infected pigs but also by faeces, urine, semen and fomites.
منابع مشابه
Recombination in Vaccine and Circulating Strains of Porcine Reproductive and Respiratory Syndrome Viruses
Em2007, a porcine reproductive and respiratory syndrome virus (PRRSV) variant with a unique 68 aa deletion in Nsp2, was recently isolated in China. Phylogenetic and molecular evolutionary analyses indicated that Em2007 is a natural recombinant between a vaccine strain of PRRSV and circulating virus. We also tested its pathogenicity in piglets.
متن کاملComplete Genome Sequence of a Novel Deletion Porcine Reproductive and Respiratory Syndrome Virus Strain
Porcine reproductive and respiratory syndrome virus HZ-31 strain is different from any other previously sequenced porcine reproductive and respiratory syndrome virus strains. It contains a 59-amino acid (aa) discontinuous deletion in aa 467 to 474, aa 498 to 519, and aa 533 to 561 of nsp2. Here, we report the complete genome sequence of this novel Chinese virulent PRRSV variant.
متن کاملPorcine Reproductive and Respiratory Syndrome Virus, Thailand, 2010–2011
Characterization of porcine reproductive and respiratory syndrome virus (PRRSV) isolates from pigs in Thailand showed 30-aa discontinuous deletions in nonstructural protein 2, identical to sequences for highly pathogenic PRRSV. The novel virus is genetically related to PRRSV from China and may have spread to Thailand through illegal transport of infectious animals from bordering countries.
متن کاملComplete Genome Sequence of a Mosaic NADC30-Like Porcine Reproductive and Respiratory Syndrome Virus in China
Here, we report the complete genome of an NADC30-like porcine reproductive and respiratory syndrome virus (PRRSV) strain, HNhx, which was isolated from Henan Province, China, in 2016 and was characterized by recombination with JXA1 strain (an epidemic highly pathogenic PRRSV strain in China) in Nsp4 to Nsp9.
متن کاملEvaluation of an industry-based sanitation protocol for full-size transport vehicles contaminated with porcine reproductive and respiratory syndrome virus
Objective: To test a protocol for sanitation of full-size commercial transport vehicles contaminated with porcine reproductive and respiratory syndrome virus (PRRSV), utilizing conditions found on commercial swine production units. Conditions included use of cold water for washing (21 ̊C), application of a commercial disinfectant via a low-pressure foamer, and rapid completion of ≤ 2 hours.
متن کاملComplete Genome Sequence of Highly Virulent Porcine Reproductive and Respiratory Syndrome Virus Variants That Recently Emerged in the United States
A recent outbreak of particularly virulent disease caused by porcine reproductive and respiratory syndrome virus has occurred in swine herds across the United States. We report here the complete genome sequence of eight viral isolates from four Nebraska herds experiencing an outbreak of severe disease in 2016.
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تاریخ انتشار 2008