2024年12月26日 · This table provides a framework for epidemiologic assessment of individual risk for highly pathogenic avian influenza (HPAI) A(H5N1) virus infection amidst the ongoing U.S. outbreak of HPAI A(H5N1) viruses in poultry and dairy cows.

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 · Avian influenza, or "bird flu," is a contagious viral disease of domestic and wild birds. It's a major threat to the poultry industry, animal health, trade, and the economy worldwide. Caused by influenza type A viruses, the disease varies in severity depending on the strain and species affected.

2025年2月3日 · The materials on this page are specific to highly pathogenic avian influenza (HPAI). You can use these tools and resources to prepare for and respond to an outbreak of this disease. We also offer general materials that apply not only to HPAI, but other foreign animal pests and diseases as well.

HPAI virus strains are extremely infectious, often fatal to domestic poultry, and can spread rapidly from flock to flock. Low pathogenic avian influenza (LPAI) virus strains occur naturally in wild migratory waterfowl and shorebirds, usually without causing illness.

In New York, 2025 started off with an increase in bird cases of highly pathogenic avian influenza (HPAI). We found H5N1 in nearly 100 birds thus far, waterfowl and raptors being the most affected. For more information on HPAI, visit our Avian Influenza disease page …

6 天之前 · Highly Pathogenic Avian Influenza (HPAI), also known as "bird flu," is circulating now in the United States and much of the world. This strain of influenza virus has spread from wild birds into poultry, dairy cattle, domestic cats and many species of wildlife throughout the United States. Although relatively rare, it has also caused illness in ...

2024年9月16日 · Since the resurgence of highly pathogenic avian influenza (HPAI) A (H5N1) virus, clade 2.3.4.4b, during 2021, these viruses have spread widely among birds worldwide, causing poultry outbreaks and infections of a wide range …

2023年9月1日 · Highly pathogenic avian influenza (HPAI) strains like H5N1 have caused significant outbreaks in birds. Since 2003 to 14 July 2023, the World Health Organization (WHO) has documented 878 cases of HPAI H5N1 infection in humans and …

2025年2月13日 · The current outbreak of highly pathogenic avian influenza (HPAI) A(H5) clade 2.3.4.4.b viruses, genotype B3.13, among dairy cattle was first detected in March 2024 (1), with human cases of HPAI A(H5) among dairy farm workers identified beginning in April (2).Farm workers and bovine veterinary practitioners working with HPAI A(H5) virus–infected cattle are …