The USDA Animal and Plant Health Inspection Service (APHIS) maintains a dedicated avian influenza page as the federal government's central channel for confirming and reporting highly pathogenic avian influenza (HPAI) detections in the United States.

The page, hosted on the .gov domain, consolidates the agency's outbreak reporting: confirmed detections in wild birds, backyard flocks and commercial poultry operations, along with the movement control and depopulation actions that follow a positive finding. For practitioners in food-animal and mixed practice, it is the reference point for current geographic spread before advising flock owners on biosecurity.

What does APHIS actually report?

APHIS publishes confirmation of HPAI detections by state, species and premises type. A confirmed case in domestic poultry triggers the standard response sequence — quarantine of the affected premises, depopulation of infected flocks, and surveillance in surrounding control zones. Wild bird detections, reported through the national surveillance system, serve as an early indicator of where the virus is circulating and which flyways carry the highest risk.

For veterinarians, the practical value is situational awareness: the page tells you whether your state or county has recent detections, which shapes how aggressively to counsel backyard-flock clients on housing birds indoors, excluding wild waterfowl contact, and reporting sudden mortality events.

Why this matters at the exam table and in the barn

Avian influenza reporting sits at the intersection of three distinct domains, and the APHIS page addresses them differently:

• Food-animal implications: commercial poultry producers rely on APHIS confirmations to trigger heightened biosecurity, movement restrictions and, in affected zones, preemptive testing before transport or sale.
• Companion-animal implications: feline and other domestic animal detections have drawn attention to HPAI's host range, making the APHIS record relevant when clinicians evaluate cats or dogs with unexplained respiratory or neurologic signs and a raw-diet or outdoor exposure history.
• Public-health implications: because H5N1 is a zoonotic agent, every animal detection carries a parallel human-exposure assessment handled in coordination with public health authorities, and APHIS reporting underpins that interagency picture.

What changes for practitioners?

The reporting structure itself is the actionable element. State veterinarians and USDA district offices use APHIS confirmations to set testing and movement requirements, so a practitioner's obligations — mandatory reporting of suspected HPAI, restrictions on moving birds from control zones — follow directly from what appears on the federal record. Suspicious mortality in poultry is reportable in every state, and APHIS is the confirmation pathway.

Because the page updates as new detections are confirmed, veterinarians serving poultry or backyard-flock clients should treat it as a standing reference rather than a one-time read. Future updates will depend on the trajectory of the outbreak, and APHIS has indicated continued reporting as long as detections continue.