Geographical spread of highly pathogenic avian influenza virus H5N1 during the 2006 outbreak in Austria.

ABSTRACT: In spring 2006, highly pathogenic avian influenza virus (HPAIV) of subtype H5N1 was detected in Austria in 119 dead wild birds. The hemagglutinin cleavage site showed that the amino acid sequence motif was identical to that of the Qinghai lineage. For detailed analysis, the hemagglutinin (HA) and neuraminidase (NA) genes of 27 selected Austrian H5N1 viruses originating from different regions and wild bird species were analyzed phylogenetically, which revealed two clearly separated Austrian subclusters, both belonging to European cluster EMA-1. Subcluster South (SCS) contains virus isolates from the south of Austria as well as from Slovenia, Turkey, Egypt, and Nigeria. The second subcluster, Northwest (SCN), covered a larger group of viruses originating from different locations and wild bir

SUBMITTER: Fink M 

PROVIDER: S-EPMC2876606 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature