拉脱维亚报告今年首例野鸟禽流感病例

Core Viewpoint - Latvia has confirmed its first case of H5N1 highly pathogenic avian influenza in wild birds this year, detected in a dead swan in Gulbene [1] Group 1: Virus Information - H5N1 is an acute viral infectious disease with a high mortality rate in infected birds [1] - Wild birds, especially waterfowl, are the main hosts and transmitters of the avian influenza virus [1] - Domestic poultry can become infected through contact with infected wild birds and their secretions or feces [1] Group 2: Biosecurity Measures - The Food and Veterinary Service of Latvia has urged poultry farmers to adhere to biosecurity measures to mitigate the risk of avian influenza due to migratory birds [1] - Poultry should only be raised in areas with appropriate protective facilities to prevent wild birds, particularly waterfowl, from entering [1] - Any suspected cases of avian influenza in domestic poultry must be reported immediately [1] Group 3: Testing and Historical Context - Over 50 samples of wild bird carcasses have been tested for H5N1 in Latvia this year, with all previous results being negative [1] - Since 2021, more than 200 wild birds in Latvia have been found to be infected with the H5N1 virus [1] - The first case of H5N1 infection in domestic poultry in Latvia was reported in a chicken farm in the Ogre region in late May this year [1]