Molecular Epidemiology of Porcine H3N2 Influenza A Viruses Isolated in Germany between 1982 and 2001
- 1 April 2004
- journal article
- Published by S. Karger AG in Intervirology
- Vol. 47 (2) , 72-77
- https://doi.org/10.1159/000077829
Abstract
We examined influenza virus strains of the subtype H3N2 from outbreaks of respiratory diseases in swine herds in Germany. Four different clusters can be distinguished when comparing parts of the HA1 gene from porcine H3N2 isolates analyzed between 1982 and 2001. Comparison between these clusters reveals a bp homology of less than 90%. In contrast, the homology within the clusters is between 93.7 and 100%. Each of these clusters was confined to a specific time period. For the NA gene an additional cluster is formed by the porcine H1N2 isolate. The findings that different subtypes and drift variants are circulating in the German pig population explain the emergence of new influenza virus variants and the need for continued surveillance of swine.Keywords
This publication has 10 references indexed in Scilit:
- On the origin of the human influenza virus subtypes H2N2 and H3N2Published by Elsevier ,2004
- Genetic Characterization of a Porcine H1N2 Influenza Virus Strain Isolated in GermanyIntervirology, 2003
- Continued Evolution of H1N1 and H3N2 Influenza Viruses in Pigs in ItalyVirology, 1997
- Infection of Children with Avian-Human Reassortant Influenza Virus from Pigs in EuropeVirology, 1994
- Genetic Reassortment between Avian and Human Influenza A Viruses in Italian PigsVirology, 1993
- Comparison of complete amino acid sequences and receptor-binding properties among 13 serotypes of hemagglutinins of influenza A virusesVirology, 1991
- Origin of the hemagglutinin gene of H3N2 influenza viruses from pigs in ChinaVirology, 1988
- The nucleoprotein as a possible major factor in determining host specificity of influenza H3N2 virusesVirology, 1985
- The antigenic structure of the influenza virus A/PR/8/34 hemagglutinin (H1 subtype)Published by Elsevier ,1982
- Studies on the origin of pandemic influenzaVirology, 1973