Since December 2014, USDA has confirmed several cases of highly pathogenic avian influenza (HPAI) H5 in the Pacific, Central, and Mississippi flyways (or migratory bird paths). The disease has been found in wild birds, as well as in a few backyard and commercial poultry flocks. The Centers for Disease Control and Prevention (CDC) considers the risk to people from these HPAI H5 infections to be low. No human cases of these HPAI H5 viruses have been detected in the United States, Canada, or internationally.
USDA has both an international and a domestic role in controlling the spread of avian influenza (AI) and reducing its effects on both agriculture and public health. USDA is aware of and prepared for the emergence of new types of AI virus. The nature of the influenza virus is such that mutations occur easily. Therefore, new strains can occur naturally at any time within avian hosts. The concern is whether the changes would impart the potential to cause severe disease or increase transmissibility between birds or mammals. Regardless of these changes, the USDA plans that are currently in place, which include surveillance, reporting, biosecurity, movement control, vaccination and depopulation, can be adjusted and applied to effectively control any new virus outbreak.
For an update on avian influenza findings, view the list of Current Highly Pathogenic H5 Avian Influenza Outbreaks.
USDA's Animal & Plant Health Inspection Service (APHIS) posts confirmed cases of Avian Influenza H5N2. Information includes the state, date the lab result was confirmed, species of bird, and size of the flock. The site is updated at 4 PM Eastern Monday through Friday. Lab tests that come in after 4 PM each day are included in the next update.
Other helpful resources include:
- USDA Avian Influenza Fact Sheet (Updated: April 2015) (PDF, 199KB)
- How Avian Influenza Vaccine is Developed Fact Sheet (Updated: May 2015) (PDF, 127KB)
- USDA Poultry Production Statistics and Data Sources (April 2015) (PDF, 297KB)
- Avian Influenza Diagnostics and Testing (PDF, 174KB)
- Avian Influenza Responding to Concerns About Influenza Type A Viruses (PDF, 33KB)
- TRANSCRIPT: USDA and CDC media call regarding HPAI response and research (4/22/15)
- AUDIO: USDA and CDC media call regarding HPAI response and research efforts (4/22/15)
- VIDEO: USDA Chief Veterinary Officer on H5N2 Avian Influenza
- MAPS: 2012 Census of Agriculture Poultry Maps
Questions and Answers
- Avian Influenza Outbreaks in the United States (PDF, 161KB)
- UPDATED: Biology of Avian Influenza and Recent Outbreaks (PDF, 189KB)
- Border Protection and Trade (PDF, 138KB)
- Food Safety and Avian Influenza (PDF, 129KB)
- Protecting Birds from Avian Influenza (PDF, 166KB)
- Twitter Q&A Biosecurity for Birds
- Avian Influenza: Protect Your Birds (PDF, 2.7MB)
- En Español: Proteja a su ave de la influenza aviar (PDF, 3.2MB)
- Avian Influenza Surveillance Plan (PDF, 365KB)
- Avian Influenza - USDA Efforts and Response (PDF, 4MB)
- En Español: Influenza Aviar Preparativos y Respuesta del USDA (PDF, 228KB)
- Avian Influenza-USDA Efforts and Response - Vietnamese (PDF, 271KB)
- Imports of Legal Birds and Bird Products (PDF, 346KB)
- USDA: Keep Bird Flu out of the U.S. (PDF, 128KB)
- CBP Poster: Avian: Don't Smuggle Me... I Could be Sick (PDF, 490KB)
- Avian: Bird Flu What You Need To Know (PDF, 63KB)
Video and Audio