Detection of a Novel Reassortant H9N9 Avian Influenza Virus in Free-Range Ducks in Bangladesh

• Published in: Viruses
• Main Authors: Rabeh El-Shesheny, Jasmine C. M. Turner, David Walker, John Franks, Patrick Seiler, Subrata Barman, Mohammed M. Feeroz, Md Kamrul Hasan, Sharmin Akhtar, Nabanita Mukherjee, Lisa Kercher, Pamela McKenzie, Robert G. Webster, Richard J. Webby
• Format: Text
• Language: English
• Published: Multidisciplinary Digital Publishing Institute 2021
• Subjects: avian influenza; free-range ducks; Bangladesh; Anser fabalis
• Online Access: https://doi.org/10.3390/v13122357

Wild aquatic birds are the primary natural reservoir for influenza A viruses (IAVs). In this study, an A(H9N9) influenza A virus (A/duck/Bangladesh/44493/2020) was identified via routine surveillance in free-range domestic ducks in Bangladesh. Phylogenetic analysis of hemagglutinin showed that the H9N9 virus belonged to the Y439-like lineage. The HA gene had the highest nucleotide identity to A/Bean Goose (Anser fabalis)/South Korea/KNU 2019-16/2019 (H9N2). The other seven gene segments clustered within the Eurasian lineage.