tetano
Editor, Senior Moderator
J Vet Med Sci. 2014 Jul 24. [Epub ahead of print]
Genomic Reassortants of Pandemic A (H1N1) 2009 Virus and Endemic Porcine H1 and H3 Viruses in Swine in Japan.
Kirisawa R1, Ogasawara Y, Yoshitake H, Koda A, Furuya T.
Author information
Abstract
From 2010 to 2013 in Japan, we isolated eleven swine influenza viruses (SIVs) from pigs showing respiratory symptoms. Sequence and phylogenetic analyses showed that six H1N1 viruses originated from the pandemic (H1N1) 2009 (pdm 09) virus and the other five viruses were reassortants between SIVs and pdm 09 viruses, representing four genotypes. Two H1N2 viruses contained H1 and N2 genes originated from Japanese H1N2 SIV together with internal genes of pdm 09 viruses. Additionally, one H1N2 virus contained a further NP gene originating from Japanese H1N2 SIV. One H1N1 virus contained only the H1 gene originating from Japanese H1 SIV in a pdm 09 virus background. One H3N2 virus contained H3 and N2 genes originating from Japanese H3N2 SIV together with internal genes of pdm 09 virus. The results indicate that pdm 09 viruses are distributed widely in the Japanese swine population and that several reassortments with Japanese SIVs have occurred.
PMID:
25056678
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/25056678
Genomic Reassortants of Pandemic A (H1N1) 2009 Virus and Endemic Porcine H1 and H3 Viruses in Swine in Japan.
Kirisawa R1, Ogasawara Y, Yoshitake H, Koda A, Furuya T.
Author information
Abstract
From 2010 to 2013 in Japan, we isolated eleven swine influenza viruses (SIVs) from pigs showing respiratory symptoms. Sequence and phylogenetic analyses showed that six H1N1 viruses originated from the pandemic (H1N1) 2009 (pdm 09) virus and the other five viruses were reassortants between SIVs and pdm 09 viruses, representing four genotypes. Two H1N2 viruses contained H1 and N2 genes originated from Japanese H1N2 SIV together with internal genes of pdm 09 viruses. Additionally, one H1N2 virus contained a further NP gene originating from Japanese H1N2 SIV. One H1N1 virus contained only the H1 gene originating from Japanese H1 SIV in a pdm 09 virus background. One H3N2 virus contained H3 and N2 genes originating from Japanese H3N2 SIV together with internal genes of pdm 09 virus. The results indicate that pdm 09 viruses are distributed widely in the Japanese swine population and that several reassortments with Japanese SIVs have occurred.
PMID:
25056678
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/25056678