Concurrent Infection with Clade 2.3.4.4b Highly Pathogenic Avian Influenza H5N6 and H5N1 Viruses, South Korea, 2023

• Published in: Emerging infectious diseases Vol. 30; no. 6; pp. 1223 - 1227
• Main Authors: Heo, Gyeong-Beom, Kang, Yong-Myung, An, Se-Hee, Kim, Yeongbu, Cha, Ra Mi, Jang, Yunyueng, Lee, Eun-Kyoung, Lee, Youn-Jeong, Lee, Kwang-Nyeong
• Format: Journal Article
• Language: English
• Published: United States U.S. National Center for Infectious Diseases 01.06.2024; Centers for Disease Control and Prevention
• Subjects: Animals; Avian influenza; Avian influenza viruses; Bird populations; Coinfection - epidemiology; Coinfection - virology; Disease Outbreaks; Distribution; duck; Ducks; Ducks - virology; H5N6; Health aspects; highly pathogenic avian influenza virus; History, 21st Century; influenza; Influenza A virus - classification; Influenza A virus - genetics; Influenza A Virus, H5N1 Subtype - genetics; Influenza A Virus, H5N1 Subtype - pathogenicity; Influenza in Birds - epidemiology; Influenza in Birds - virology; Observations; Phylogeny; poultry; Poultry Diseases - epidemiology; Poultry Diseases - virology; Republic of Korea - epidemiology; Sentinel health events; Virus research; viruses; Republic of Korea; East Asia; South Korea; influenza; H5N1; South Korea; poultry; viruses; H5N6; duck; highly pathogenic avian influenza virus; clade; international dissemination; migratory wild birds
• ISSN: 1080-6040; 1080-6059; 1080-6059
• DOI: 10.3201/eid3006.240194

Highly pathogenic avian influenza H5N6 and H5N1 viruses of clade 2.3.4.4b were simultaneously introduced into South Korea at the end of 2023. An outbreak at a broiler duck farm consisted of concurrent infection by both viruses. Sharing genetic information and international surveillance of such viruses in wild birds and poultry is critical.