A recent outbreak of bird flu has raised concerns as two separate strains of the virus, H5N1 and H5N9, have been detected in dairy cattle across the United States, particularly in Nevada. The USDA has confirmed that approximately 50,000 cows have been infected, with signs indicating adaptation of the virus to mammals. Experts are warning about the potential implications for livestock and human health, as the detection of these strains marks the first time they have been found in dairy cows. Nevada herds are particularly affected, prompting concerns over the stability of U.S. egg and beef supply chains. As investigations continue, authorities are evaluating how these new variants could impact agriculture and public health.