
Avian Influenza in Birds: Causes and How It Spreads
Mar 26, 2025 · Avian influenza refers to disease in birds caused by infection with avian (bird) influenza (flu) Type A viruses. Avian influenza A viruses have been isolated from more than 100 different species of wild birds around the world.
Avian influenza - Wikipedia
Avian influenza (AI), or bird flu, has significantly impacted the poultry industry with economic ramifications felt globally. The virus primarily affects poultry species, and when outbreaks occur, large-scale culling of infected birds is often necessary to prevent further spread.
Avian Influenza (Bird Flu) Fact Sheet | Cornell University College of ...
Mar 12, 2025 · Avian influenza is an influenza type A virus that occurs naturally in wild aquatic birds, including ducks, geese and gulls. Mild forms of avian influenza (known as low pathogenic avian influenza, or LPAI) are routinely found in wild birds and don’t cause serious illness.
Avian Influenza Outbreak: Should You Take Down Your Bird …
Apr 3, 2025 · Many people are concerned about the outbreak of avian influenza, or bird flu, that began in 2022 and has affected domestic poultry, waterfowl, raptors, shorebirds, other species of birds, and some mammals in many parts of the world.
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H5N1 Influenza - Animal and Plant Health Inspection Service
Mar 20, 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. Many other species are also susceptible to this virus. APHIS is working with our Federal, State, and industry partners to combat outbreaks, support producers, and strengthen prevention.
Animal and Plant Health Inspection Service
On March 12, APHIS confirmed the presence of highly pathogenic avian influenza (HPAI) H7N9 in a broiler chicken breeder flock in Mississippi. APHIS has previously documented H7 low pathogenicity avian influenza (LPAI) in U.S. wild bird surveillance this year and in previous years, but this is the first HPAI H7 case in commercial poultry in the United States since 2017.
CDC A(H5N1) Bird Flu Response Update March 19, 2025
Mar 19, 2025 · The immediate risk to the general public from H5 bird flu remains low. On the animal health side, USDA is reporting that since March 2024, 989 dairy herds in 17 U.S. states have confirmed cases of avian influenza A(H5N1) virus infections in dairy cows as the number of affected herds continues to grow.
FAO warns of ‘unprecedented’ avian flu spread, in call for global ...
Mar 17, 2025 · For example, egg prices reached a record high in the United States during February according to the US Consumer Price Index, with farmers forced to slaughter over 166 million birds so far in total as avian flu has spread – mostly egg-laying chickens. So far this year more than 30 million birds in the US have been killed, according to news ...
Avian Influenza | Cornell Wildlife Health Lab
Avian influenza (AI) viruses occur naturally among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. Wild aquatic birds can be infected with avian influenza A viruses in their intestines and respiratory tract, but usually do not get sick.