The article highlights the concerns surrounding the detection of atypical avian influenza, also known as 'bull flu,' in the United States, particularly in adult herds and dairy cows. The USDA has assured that hamburger meat, when properly cooked, poses no risk of transmission. However, the FDA has identified the virus in 20% of milk samples, although it's not viable, prompting safety concerns. Additionally, the Centers for Disease Control and Prevention (CDC) has detected the virus in wastewater, with highest levels in Illinois and Florida, raising suspicions about potential undetected infected herds and the possibility of the virus spreading through wastewater treatment plants and dairy products. The CDC is working with local health authorities to investigate these findings and has recommended protective equipment for workers in slaughterhouses and dairy plants across the country.