AI viruses are divided into two groups based on their ability to cause disease in poultry: high pathogenicity (HPAI) or low pathogenicity (LPAI). HPAI results in high death rates (up to 100% mortality within 48 hours) in some poultry species. LPAI also causes outbreaks in poultry but is not generally associated with severe disease.

2024年12月26日 · CDC considers HPAI A (H5N1) viruses to have the potential to cause severe disease in infected humans and recommends the following: Avoid exposure to sick or dead animals.

2022年2月9日 · With the recent detections of the Eurasian H5 strain of highly pathogenic avian influenza (HPAI) in wild birds and domestic poultry in the United States, bird owners should …

Avian influenza (AI) is caused by an influenza type A virus which can infect poultry (such as chickens, turkeys, pheasants, quail, domestic ducks, geese, and guinea fowl) and is carried by free flying waterfowl such as ducks, geese and shorebirds.

2024年12月20日 · HPAI is a very contagious and often deadly respiratory disease of poultry, such as chickens, turkeys, and geese. It is often spread by wild birds and can make other animals sick, too. It's a major threat to the poultry industry, animal health, trade, and the economy worldwide.

2025年2月4日 · Highly pathogenic avian influenza (HPAI) strains are deadly to domestic poultry and can wipe out entire flocks within a matter of days. Low pathogenicity avian influenza (LPAI) strains typically cause few or no signs of illness. They occur naturally in wild birds around the world. However, some LPAI strains can become highly pathogenic in poultry.

2020年8月5日 · Yesterday, the US Department of Agriculture’s (USDA) National Veterinary Services Laboratory (NVSL) confirmed a detection of Highly Pathogenic Avian Influenza (HPAI) H5N1 in dairy cows in Northeast Colorado. This is the first detection of avian influenza diagnosed in cattle in Colorado.

Highly pathogenic avian influenza (HPAI) virus strains are extremely infectious, often fatal to chickens and turkeys, and can spread rapidly from flock-to-flock.

For backyard or commercial poultry, HPAI is a very contagious, fatal animal disease that can decimate a flock in less than 48 hours.

Washington, D.C., Feb. 26, 2025—U.S. Secretary of Agriculture Brooke Rollins today announced a $1 billion-dollar comprehensive strategy to curb highly pathogenic avian influenza (HPAI), protect the U.S. poultry industry, and lower egg prices.This is in addition to funding already being provided to indemnify growers for depopulated flocks. As the Secretary detailed in the Wall …