拉脱维亚一家大型农场暴发非洲猪瘟疫情

Core Viewpoint - The outbreak of African swine fever at a farm in Talsi, Latvia, owned by Danish company Niko International, marks the fourth case of the disease in Latvia this year, with previous cases occurring in smaller farms [1]. Group 1: Outbreak Details - The affected farm has 4,900 pigs and is undergoing measures to prevent the spread of the disease to other farms [1]. - All pigs at the Niko farm will be culled, and an epidemiological investigation will be initiated [1]. - A quarantine zone has been established around the farm, with other farms in the area undergoing health and biosecurity checks [1]. Group 2: Disease Characteristics - African swine fever is a highly contagious disease characterized by high fever, severe internal bleeding, and high mortality rates among pigs [1]. - The virus does not infect humans, but contaminated food or objects can facilitate its spread [1]. - The virus can survive for a long time under non-high temperature conditions, and there is currently no vaccine or specific treatment available for it [1]. Group 3: Historical Context - The first case of African swine fever in Latvia was discovered in June 2014 in a wild boar carcass [1].