Avian flu outbreak hits Colorado poultry farms and backyards
Highly Pathogenic Avian Influenza (HPAI) has been detected in Colorado, affecting both commercial and backyard poultry. The virus was confirmed at a major commercial real estate in Weld County and three smaller flocks in Larimer and Logan counties. State officials have responded swiftly, imposing quarantines and urging poultry owners to tighten biosecurity measures.
The outbreak was first identified at a commercial real estate operation in Weld County, housing around 1.33 million chickens. Authorities have initiated depopulation and disposal procedures at the site, with state and federal teams coordinating the response. In addition, two backyard flocks in Larimer County and one in Logan County tested positive for the virus.
A verbal disaster declaration has been issued to streamline efforts between agencies. Quarantine zones now cover affected premises in Weld and Logan counties, while Logan County poultry owners must report their flock status to officials. The Colorado Department of Agriculture is stressing the importance of strict biosecurity to prevent further spread.
Avian influenza spreads primarily through migrating wild birds, posing a persistent risk to domestic poultry. Though no human cases have been recorded in Colorado since summer 2024, the virus remains active. Nationwide, over 1,200 HPAI cases have been confirmed in commercial poultry, wild birds, and even dairy cattle across 48 states this year.
The detections reinforce the need for ongoing vigilance among poultry owners in Northern Colorado. Quarantines and control areas are in place to limit transmission, while state officials continue monitoring the situation. Owners are being reminded to follow biosecurity guidelines to protect their flocks from further outbreaks.
