"After a summer lull in U.S. cases of avian influenza in both poultry and dairy cattleand no human infections reported in the country since Februarythe virus is back. Bird flu's return threatens major economic losses for the U.S. agricultural system and raises a small but real risk of a human pandemic. Scientists expected bird flu to return. It was highly unlikely that, following three full years of infecting U.S. poultry and making the surprising leap into cows, the virus would simply disappear."
"In poultry, bird flu is on the rise: according to the U.S. Department of Agriculture, 50 flocks of commercial and backyard poultry in the country had confirmed avian influenza infections in October. Farmers cull all birds on infected premises to reduce the virus's spread, and this month, more than three million animals have been killed to date. Carol Cardona, a poultry veterinarian at the University of Minnesota, says she's worried by the fact that the state's board of animal health has already reported 20 flocks"
Bird flu H5N1 has reemerged in the United States after a summer lull, affecting both poultry and dairy cattle and presenting continued public‑health concern. The virus threatens substantial economic losses across commercial and backyard poultry operations and dairy farms. Authorities have confirmed multiple infected flocks and have culled birds to slow transmission, with more than three million animals killed so far. The dairy outbreak identified in March 2024 remains active and is harder to track because infected cattle often do not die. Scientists anticipated the virus's persistence and are calling for planning and next steps to manage ongoing risk.
Read at www.scientificamerican.com
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