Probable Tiger-to-Tiger Transmission of Avian Influenza H5N1
Roongroje Thanawongnuwech*, Alongkorn Amonsin*, Rachod Tantilertcharoen*, Sudarat Damrongwatanapokin†, Apiradee Theamboonlers*, Sunchai Payungporn*, Kamonchart Nanthapornphiphat‡, Somchuan Ratanamungklanon§, Eakchai Tunak§, Thaweesak Songserm¶, Veravit Vivatthanavanich#, Thawat Lekdumrongsak*, Sawang Kesdangsakonwut*, Schwann Tunhikorn**, and Yong Poovorawan*
Author affiliations: *Chulalongkorn University, Bangkok, Thailand; †National Institute of Animal Health, Bangkok, Thailand; ‡Sriracha Tiger Zoo, Chonburi, Thailand; §Eastern Veterinary Development Center, Chonburi, Thailand; ¶Kasetsart University, NakornPathom, Thailand; #Chonburi Governor Office, Chonburi, Thailand; **National Park Wildlife and Plant Conservation Department, Bangkok, Thailand
Figure 1. . Histopathologic and immunohistochemical evidence of H5N1 virus in tiger: A) Mild multifocal nonsuppurative encephalitis; B) Influenza A virus antigen in nuclei and cytoplasm visible as brown staining.
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