Avian influenza has been detected in a North Carolina dairy herd. It’s the first time the virus has impacted the state’s livestock. Until this week, the disease, also known as Highly Pathogenic Avian Influenza (HPAI), had been found in cattle in just six states: Texas, Kansas, Michigan, Idaho, New Mexico, and Ohio. North Carolina joined the list after a dairy cow that had been moved to the state from one of the impacted herds in Texas tested positive for the disease.