Pathologic Changes in Wild Birds Infected with Highly Pathogenic Avian Influenza A(H5N8) Viruses, South Korea, 2014.
In January 2014, an outbreak of infection with highly pathogenic avian influenza (HPAI) A(H5N8) virus began on a duck farm in South Korea and spread to other poultry farms nearby. During this outbreak, many sick or dead wild birds were found around habitats frequented by migratory birds. To determine the causes of death, we examined 771 wild bird carcasses and identified HPAI A(H5N8) virus in 167. Gross and histologic lesions were observed in pancreas, lung, brain, and kidney of Baikal teals, bean geese, and whooper swans but not mallard ducks. Such lesions are consistent with lethal HPAI A(H5N8) virus infection. However, some HPAI-positive birds had died of gunshot wounds, peritonitis, or agrochemical poisoning rather than virus infection. These findings suggest that susceptibility to HPAI A(H5N8) virus varies among species of migratory birds and that asymptomatic migratory birds could be carriers of this virus.
['Kim|Hye-Ryoung|HR|', 'Kwon|Yong-Kuk|YK|', 'Jang|Il|I|', 'Lee|Youn-Jeong|YJ|', 'Kang|Hyun-Mi|HM|', 'Lee|Eun-Kyoung|EK|', 'Song|Byung-Min|BM|', 'Lee|Hee-Soo|HS|', 'Joo|Yi-Seok|YS|', 'Lee|Kyung-Hyun|KH|', 'Lee|Hyun-Kyoung|HK|', 'Baek|Kang-Hyun|KH|', 'Bae|You-Chan|YC|']
D000818:Animals D000835:Animals, Wild D001717:Birds D004196:Disease Outbreaks D005838:Genotype D049674:History, 21st Century D009980:Influenza A virus D005585:Influenza in Birds D056910:Republic of Korea
highly pathogenic avian influenza influenza viruses South Korea migratory bird H5N8 subtype immunohistochemistry pathological diagnosis respiratory infections