Highly Pathogenic Avian Influenza A (H5N1) Virus: Interim ...
Dec 26, 2024 · In the United States, HPAI A (H5N1) virus detections in wild birds have been reported in 50 states or territories, and outbreaks in commercial poultry or backyard bird flocks associated with …
H5N1 Influenza - Animal and Plant Health Inspection Service
Dec 14, 2025 · The H5N1 strain of highly pathogenic avian influenza (HPAI) is present in wild birds worldwide and is causing outbreaks in U.S. domestic birds and dairy cattle.
Highly pathogenic avian influenza - AnimalHealth
Highly pathogenic avian influenza (HPAI) is a highly contagious transboundary disease with zoonotic potential affecting both animal and human health. It causes variable clinical signs and high mortality …
Avian Influenza - U.S. Fish & Wildlife Service
Highly pathogenic avian influenza (HPAI) viruses can severely affect domestic animal, wildlife, and sometimes human health. Outbreaks of Eurasian lineage highly pathogenic avian influenza viruses …
Avian Influenza - APIC
Oct 2, 2025 · However, isolated mutations in virus samples from humans show potential for adaptation (human-to-human) The United States last detected Avian Influenza in 2022. Where H5N1 was …
Highly Pathogenic Avian Influenza | Cornell Wildlife Health Lab
In New York, 2025 started off with an increase in bird cases of highly pathogenic avian influenza (HPAI). We found H5N1 in nearly 250 birds across 30 species thus far, waterfowl and raptors being the most …
Arkansas reports case of HPAI in commercial poultry
Dec 22, 2025 · The Arkansas Department of Agriculture (ADA) reported that highly pathogenic avian influenza (HPAI) has been detected at a commercial poultry farm in Cleveland County. According to …
Avian Influenza Surveillance | U.S. Geological Survey
Feb 10, 2025 · Avian influenza is a viral disease caused by various strains of avian influenza viruses that can be classified as low pathogenic avian influenza (LPAI) or highly pathogenic avian influenza …
Highly Pathogenic Avian Influenza confirmed in Cleveland County
Dec 22, 2025 · LITTLE ROCK — The Arkansas Department of Agriculture (Department) has confirmed a case of Highly Pathogenic Avian Influenza (HPAI) on a commercial poultry farm in Cleveland County.
U.S. Bird Flu Cases Surge in Early 2025. Here’s Where HPAI Is …
Feb 25, 2025 · To date, more than 157.77 million reported birds have been affected by HPAI since February 2022, with cases found in all 50 states and Puerto Rico. Cases slowed down significantly …