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- Takada, Ayato, et al. Show all 25 Authors
- Virus genes 2015 v.51 no.1 pp. 57-68
- Influenza A virus; autumn; avian influenza; feces; humans; monitoring; nucleotide sequences; phylogeny; poultry; viruses; water birds; wild birds; China; Japan; Mongolia; Siberia
- ... Migratory water birds are the natural reservoir of influenza A viruses. H5 and H7 influenza viruses are isolated over the world and also circulate among poultry in Asia. In 2010, two H5N1 highly pathogenic avian influenza viruses (HPAIVs) were isolated from fecal samples of water birds on the flyway of migration from Siberia, Russia to the south in Hokkaido, Japan. H7N9 viruses are sporadically is ...
- Takada, Ayato, et al. Show all 11 Authors
- Virus genes 2010 v.41 no.3 pp. 351-357
- Cygnus cygnus; Influenza A virus; adults; antigenic variation; chickens; edema; genes; lakes; lungs; phylogeny; progeny; swans; vaccination; viruses; wild birds; China; Japan; Korean Peninsula; Russia
- ... In April and May 2008, whooper swans (Cygnus cygnus) were found dead in Hokkaido in Japan. In this study, an adult whooper swan found dead beside Lake Saroma was pathologically examined and the identified H5N1 influenza virus isolates were genetically and antigenically analyzed. Pathological findings indicate that the swan died of severe congestive edema in the lungs. Phylogenetic analysis of the ...