Core Viewpoint - The detection of H5N1 avian influenza virus antibodies in a cow's milk in the Netherlands marks the first instance of such infection in cattle outside the United States, raising concerns about the spread of avian influenza in livestock [1][2]. Group 1: Infection Detection - A cow in Friesland, Netherlands, tested positive for H5N1 antibodies after a cat on the same farm died from the virus, indicating potential transmission routes [1][2]. - The cow had previously shown symptoms of mastitis and respiratory issues, and its milk was not processed or sold [1]. Group 2: Risk Assessment - The Friedrich-Loeffler Institute assessed the risk of further infection among local ruminants as extremely low, given that the case appears isolated and no further spread has been detected [2]. - The Netherlands is currently experiencing its most severe avian influenza outbreak in years, with over 36 farms affected and more than 1.5 million birds culled since October 2025 [2]. Group 3: Broader Context - The U.S. Department of Agriculture reported that since March 2024, 17 states have reported cases of cattle infected with highly pathogenic avian influenza [2]. - In March 2025, the UK reported its first case of avian influenza in sheep, indicating a potential widening of the virus's host range [2].
荷兰发现奶牛感染禽流感 可能为美国以外首例
Jing Ji Guan Cha Wang·2026-01-27 05:56