2 天之前 · 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.

2025年3月12日 · 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.

Situation Update. February 26, 2025 – CDC continues to respond to the public health challenge posed by a multistate outbreak of avian influenza A(H5N1) virus, or "H5N1 bird flu," in dairy cows, poultry, and other animals in the United States. CDC is working in collaboration with the U.S. Department of Agriculture (USDA), the Food and Drug …

2024年12月20日 · Avian influenza A viruses that infect birds have evolved into distinct genetic lineages based on the geographic locations where they were first detected. These different lineages can be distinguished by studying the genetic make-up of these viruses.

2025年3月19日 · 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.

2025年3月12日 · What is "bird flu" and why is it in the news so much lately? 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.

2025年3月20日 · 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.

4 天之前 · Bird flu (H5N1) is caused by an infection with avian influenza type A viruses, which primarily spread among wild aquatic birds and can infect other animals. Highly pathogenic avian influenza (HPAI) viruses cause severe disease and high mortality in infected poultry.

2025年2月26日 · A dominant strain of avian flu, or “bird flu” (H5N1) has jumped species, spreading to numerous animals, including dairy cattle and even to human farm workers. Avian influenza isn’t new, but the virus continues to evolve and is likely here to stay, says Andrew Bowman, DVM, PhD, a molecular epidemiologist in the Department of Veterinary Preventive Medicine at The Ohio State University ...

2024年5月16日 · Avian influenza, sometimes known as bird flu, is a disease caused by a virus that mainly affects birds but can also affect mammals, including humans. It primarily spreads from infected birds to humans through close contact with birds or contaminated environments, such as in backyard poultry farm settings and at markets where birds are sold.