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Emergence of the pandemic H1N1 2009 influenza A virus in swine herds in Poland Cover

Emergence of the pandemic H1N1 2009 influenza A virus in swine herds in Poland

Open Access
|Sep 2013

Abstract

The outbreaks of pandemic H1N1 influenza A virus (pdm-like H1N1 2009), detected for the first time in farrow-to-finish farms in Poland, were described. The nasal swabs and lung tissue collected from diseased/dead animals were tested using molecular techniques (RRT-PCR, MRT-PCR, RT-PCR, SSG-PCR, sequencing) and virus isolation. The amplification of the genetic material extracted from the tested samples confirmed the presence of the M1 gene sequence of type A influenza virus. Using MRT-PCRs no products characteristic for HA and NA of any swine influenza virus subtypes were obtained. Using SSGPCR, products specific for pandemic HA and NA gene fragments were detected. Six new pdm-like H1N1 2009 strains were isolated and characterised. Phylogenetic analysis of the HA and NA genes revealed that they belong to one lineage with the pandemic strain A/California/04/2009 and other human strains, including human strains isolated in Poland in 2011.

Language: English
Page range: 293 - 300
Published on: Sep 27, 2013
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2013 Iwona Markowska-Daniel, Kinga Urbaniak, Marian Porowski, Paweł Karbowiak, Andrzej Kowalczyk, Edyta Kozak, Zygmunt Pejsak, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons License.