Limited outbreak of highly pathogenic influenza A(H5N1) virus in a Herring Gull colony, Canada, 2022

In summer 2022, highly pathogenic influenza A(H5N1) virus reached the Herring Gull (Larus argentatus) breeding colony on Kent Island, New Brunswick, Canada. Real-time monitoring revealed a self-limiting outbreak with low mortality. Proactive seabird surveillance is crucial for monitoring such limited outbreaks, protecting vulnerable seabirds, and tracing potential zoonotic transmission routes.2022年夏季，高致病性甲型流感（H5N1）病毒侵入加拿大新不伦瑞克省肯特岛的灰背鸥（Larus argentatus）繁殖群落。实时监测显示，此次暴发为自限性暴发且死亡率较低。主动开展海鸟监测工作，对于监测此类有限暴发、保护脆弱海鸟种群以及追踪潜在的人畜共患传播路径至关重要。