caa a22 4500 475767209 CHVBK 20180406123609.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s007050050695 doi (NATIONALLICENCE)springer-10.1007/s007050050695 Phylogenetic analysis of H7 haemagglutinin subtype influenza A viruses [Elektronische Daten] [J. Banks, E. C. Speidel, J. W. McCauley, D. J. Alexander] Summary.:  A 945 nucleotide region (bases 76-1020) of the HA1 part of the HA gene was obtained for 31 influenza viruses of H7 subtype isolated primarily from Europe, Asia and Australia over the last 20 years. These were analysed phylogenetically and compared with sequences of the same region from 23 H7 subtype viruses available in Genbank. The overall results showed two geographically distinct lineages of North American and Eurasian viruses with major sublineages of Australian, historical European and equine viruses. Genetically related sublineages and clades within these major groups appeared to reflect geographical and temporal parameters rather than being defined by host avian species. Viruses of high and low virulence shared the same phylogenetic branches, supporting the theory that virulent viruses are not maintained as a separate entity in waterfowl. Springer-Verlag, 2000 Banks J. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut Speidel E. C. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut McCauley J. W. Institute for Animal Health, Compton Laboratory, Compton, Newbury, Berkshire U. K., GB aut Alexander D. J. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut Archives of Virology Springer-Verlag 145/5(2000-05-01), 1047-1058 0304-8608 145:5<1047 2000 145 705 https://doi.org/10.1007/s007050050695 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s007050050695 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Banks J. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut NATIONALLICENCE 700 1- Speidel E. C. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut NATIONALLICENCE 700 1- McCauley J. W. Institute for Animal Health, Compton Laboratory, Compton, Newbury, Berkshire U. K., GB aut NATIONALLICENCE 700 1- Alexander D. J. Avian Virology, Veterinary Laboratories Agency Weybridge, Addlestone, Surrey U.K., GB aut NATIONALLICENCE 773 0- Archives of Virology Springer-Verlag 145/5(2000-05-01), 1047-1058 0304-8608 145:5<1047 2000 145 705 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer