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.

中文翻译：

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2023 年韩国同时感染分支 2.3.4.4b 高致病性禽流感 H5N6 和 H5N1 病毒

2.3.4.4b分支的高致病性禽流感H5N6和H5N1病毒于2023年底同时传入韩国。肉鸭场爆发的疫情是两种病毒同时感染。共享遗传信息以及对野生鸟类和家禽中此类病毒的国际监测至关重要。