H5N1 described as 'entrenched' in North America

An animal‑health commentary says H5N1 is now ‘entrenched’ in North America and argues there’s a growing case for vaccinating Indiana’s herds as the virus shows mammal‑to‑mammal risk (wbiw.com). The piece frames the shift as moving the virus from a primarily bird concern toward broader livestock vulnerability in parts of the U.S. (wbiw.com).