Cross-species infection of avian influenza H5N1 U.S. dairy cow infection case

Published 2024년 12월 23일

Tridge summary

The article reports a concerning outbreak of avian influenza, specifically the H5N1 subtype, affecting both animals and dairy cows in the United States, with sporadic cases in other mammals and human contact. Initially identified in Texas in February, this outbreak has spread to 9 states, affecting 63 dairy farms and resulting in 3 human infections. The symptoms in cows include reduced feed intake and milk production, with some cows producing thick, yellow milk. The virus was detected in dead wild birds and cats on ranches, and dairy farm workers have been the first cases of cow-to-human transmission. Despite the severe impact on the dairy industry, there is no evidence of contamination in commercially available fresh milk and beef products. The USDA and other organizations are working to contain the spread and provide guidelines for dairy farmers to ensure food safety and prevent further infections.

Disclaimer:The above summary was generated by Tridge's proprietary AI model for informational purposes.

Original content

Are dairy cows infected with avian influenza virus? When the USDA disclosed this information on March 25 this year, it indeed made many people feel suspicious and uneasy. Every autumn and winter, migratory birds in the northern hemisphere migrate south from their northern breeding areas, and the avian influenza season also kicks off. The avian influenza virus is like a traveler on a migratory bird flight, landing at different locations as the flight. These nanoparticles Young passengers of lower class may end up in the local area and be infected with poultry or other wild birds when getting off the plane or transferring. As far as the types of avian influenza viruses are concerned, the highly pathogenic avian influenza viruses circulating globally in the past three years have changed in virus types. Before the spring of 2021, the H5N8 subtype was the main circulating virus; since 2022 Since the winter of 2020, the vast majority of virus strains that have invaded the poultry ...

Source: Agriharvest