AASV 15/02/17 Emergence of a Novel Highly Pathogenic Porcine Reproductive and Respiratory Syndrome Virus in China. February 15, 2017 — From 2014 to 2015, four novel highly pathogenic PRRS virus (HP-PRRSV) strains named 14LY01-FJ, 14LY02-FJ 15LY01-FJ, and 15LY02-FJ were isolated from high morbidity (100%) and mortality (40%-80%) in piglets and sows in Fujian Province.
To further our knowledge about these novel virus strains, we characterized their complete genomes and determined their pathogenicity in piglets. Full-length genome sequencing analysis showed that these four isolates were closely related to type 2 (North American type, NA-type) isolates, with 88.1%-96.3% nucleotide similarity, but only 60.6%-60.8% homology to the Lelystad virus (LV) (European type, EU-type). The full length of the four isolates was determined to be 15017 or 15018 nucleotides (nt), excluding the poly(A) tail. CDC EID - Volume 16, Number 2–February 2010 - Origin of Highly Pathogenic Porcine Reproductive and Respiratory Syndrome Virus, China. The Veterinary Journal Volume 174, Issue 3, November 2007, Emergence of a highly pathogenic porcine reproductive and respiratory. Abstract Herds of pigs in the Mid-Eastern region of China have experienced recent outbreaks of a severe form of porcine reproductive and respiratory syndrome (PRRS) characterised by high fever and morbidity and mortality in animals of different ages.
Eighty-one herds were diagnosed with PRRS virus (PRRSV) infection from June to December 2006 on the basis of clinical signs, pathological findings and reverse transcriptase polymerase chain reaction (RT-PCR). Twenty strains of PRRSV were isolated from 20 herds in six provinces. Following experimental inoculation, one isolate, designated SY0608, caused 100% morbidity and 25–50% mortality in 30-, 65- and 105-day-old pigs and the birth of stillborn and weak piglets from affected sows. The ORF5 gene had 99.5–99.8% nucleotide and 99–100% derived amino acid sequence identities among SY0608 and five other field isolates, but only 89.4% and 88.6% identities, respectively, with VR-2332, the prototypic North American isolate. Keywords. PLOS JANVIER 2008 Emergence of Fatal PRRSV Variants: Unparalleled Outbreaks of Atypical PRRS in China and Molecular Dissection o.
Abstract Porcine reproductive and respiratory syndrome (PRRS) is a severe viral disease in pigs, causing great economic losses worldwide each year.
The causative agent of the disease, PRRS virus (PRRSV), is a member of the family Arteriviridae. Here we report our investigation of the unparalleled large-scale outbreaks of an originally unknown, but so-called “high fever” disease in China in 2006 with the essence of PRRS, which spread to more than 10 provinces (autonomous cities or regions) and affected over 2,000,000 pigs with about 400,000 fatal cases.
Different from the typical PRRS, numerous adult sows were also infected by the “high fever” disease. This atypical PRRS pandemic was initially identified as a hog cholera-like disease manifesting neurological symptoms (e.g., shivering), high fever (40–42°C), erythematous blanching rash, etc. Academic Editor: Joel Montgomery, US Naval Medical Research Center Detachment/Centers for Disease Control, United States of America Introduction. CDC EID Volume 13, Number 9–September 2007 Highly Pathogenic Porcine Reproductive and Respiratory Syndrome, China.
Heartland virus (HRTV) is a recently described phlebovirus initially isolated in 2009 from 2 humans who had leukopenia and thrombocytopenia.
Serologic assessment of domestic and wild animal populations near the residence of 1 of these persons showed high exposure rates to raccoons, white-tailed deer, and horses. To our knowledge, no laboratory-based assessments of viremic potential of animals infected with HRTV have been performed. We experimentally inoculated several vertebrates (raccoons, goats, chickens, rabbits, hamsters, C57BL/6 mice, and interferon-α/β/γ receptor–deficient [Ag129]) mice with this virus.
All animals showed immune responses against HRTV after primary or secondary exposure. However, neutralizing antibody responses were limited. Archives of Virology (2009) 154:1589-1597, October 08, 2009 Genetic variation and pathogenicity of highly virulent porcine repro. A highly pathogenic swine disease designated as ‘porcine high fever disease (PHFD)’ appeared recently in China.
Porcine reproductive and respiratory syndrome virus (PRRSV) was identified as an agent associated with PHFD, and two discontiguous sequence deletions were identified as a genetic marker in the Nsp2 region of the viral genome. To examine PHFD in Shandong province, a total of 10 PRRSV isolates were recovered from pig herds that had never been vaccinated for PRRS. Sequence analysis of open reading frame 5 (ORF5) showed that the level of identity among the 10 isolates ranged between 88.2 and 99.2%. CRESA - Jornada formativa sobre el control i impacte del PRRS La plataforma per al control del PRRS (ConPRRS) creada recentment i integrada per investigadors del CReSA-UAB, UCM i UdL organitzarà una sessió formativa el proper dijous, 23 de octubre de 201. La plataforma per al control del PRRS (ConPRRS) creada recentment i integrada per investigadors del CReSA-UAB, UCM i UdL organitzarà una sessió formativa el proper dijous, 23 de octubre de 2014, a la Facultat de Veterinària de Saragossa.
Aquesta formació, la primera d'una sèrie de sessions que s'impartiran fins finals de 2014, va dirigida a veterinaris de porcí d'empreses de producció, ADS, així com a funcionaris de l'administració o a qualsevol veterinari o productor interessat en el tema. Les inscripcions han d’estar formalitzades abans del dilluns, 20 octubre de 2014. Per a més informació sobre la inscripció, consulti el programa de la sessió, contacteu-nos per telèfon (+34 93 581 10 47) o per correu (email@example.com).