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A Molecular and Epidemiological Description of a Severe Porcine Reproductive and Respiratory Syndrome Outbreak in a Commercial Swine Production System in Russia.
Havas, Karyn A; Makau, Dennis N; Shapovalov, Sergei; Tolkova, Ekaterina; VanderWaal, Kim; Tkachyk, Tymofii; Spronk, Gordon D; Heron, Brad; Dee, Scott A; Perez, Andres.
Afiliación
  • Havas KA; Pipestone Research, Pipestone Holdings, Pipestone, MN 56164, USA.
  • Makau DN; Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
  • Shapovalov S; Genomics and Molecular Biology Laboratory, Research and Testing Center, Cherkizovo LLC, 107143 Moscow, Russia.
  • Tolkova E; Genomics and Molecular Biology Laboratory, Research and Testing Center, Cherkizovo LLC, 107143 Moscow, Russia.
  • VanderWaal K; Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
  • Tkachyk T; Genomics and Molecular Biology Laboratory, Research and Testing Center, Cherkizovo LLC, 107143 Moscow, Russia.
  • Spronk GD; Pipestone Research, Pipestone Holdings, Pipestone, MN 56164, USA.
  • Heron B; Pork Division, Cherkizovo Group Limited Liability Corporation, 399870 Lipetsk, Russia.
  • Dee SA; Pipestone Research, Pipestone Holdings, Pipestone, MN 56164, USA.
  • Perez A; Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
Viruses ; 14(2)2022 02 11.
Article en En | MEDLINE | ID: mdl-35215966
Porcine reproductive and respiratory syndrome (PRRS) is an economically devastating disease of swine in many parts of the world. Porcine reproductive and respiratory syndrome virus (PRRSV) type 1 is endemic in Europe, and prevalence of the subtypes differ spatially. In this study, we investigated a severe PRRS outbreak reported in 30 farms located in eastern Russia that belong to a large swine production company in the region that was also experiencing a pseudorabies outbreak in the system. Data included 28 ORF5 sequences from samples across 18 of the 25 infected sites, reverse transcriptase real-time polymerase chain reaction (RT-qPCR) results from diagnostic testing, reports of clinical signs, and animal movement records. We observed that the outbreak was due to two distinct variants of wildtype PRRSV type 1 subtype 1 with an average genetic distance of 15%. Results suggest that the wildtype PRRSV variants were introduced into the region around 2019, before affecting this production system (i.e., sow farms, nurseries, and finisher farms). Clinical signs did not differ between the variants, but they did differ by stage of pig production. Biosecurity lapses, including movement of animals from infected farms contributed to disease spread.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Porcinos / Virus del Síndrome Respiratorio y Reproductivo Porcino Tipo de estudio: Risk_factors_studies / Screening_studies Límite: Animals País/Región como asunto: Asia / Europa Idioma: En Revista: Viruses Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Porcinos / Virus del Síndrome Respiratorio y Reproductivo Porcino Tipo de estudio: Risk_factors_studies / Screening_studies Límite: Animals País/Región como asunto: Asia / Europa Idioma: En Revista: Viruses Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Suiza