May 24, 2022 · Influenza A viruses are endemic (can infect and regularly transmit) in 6 animal species or groups (wild waterfowl, domestic poultry, swine, horses, dogs, and bats) in addition …

2 days ago · H5N1 bird flu is a virus that has recently been detected for the first time in cows. Jan 6, 2025. Protective actions around wild birds Avoid direct contact with wild birds and observe them only from a distance, if possible. Learn more.

Transmission of highly pathogenic H5N1 from domestic poultry back to migratory waterfowl in western China has increased the geographic spread. The spread of H5N1 and its likely reintroduction to domestic poultry increase the need for good agricultural vaccines.

Jan 15, 2025 · Virus transmission What is CDC on the lookout for? Sustained human-to-human transmission outside of a household increases the likelihood of significant public health impact. Influenza A (H5N1) has been spreading in wild birds globally since the mid-1990s and in the United States since 2014.

Almost all cases of H5N1 virus infection in people have been associated with close contact with infected live or dead birds, or H5N1-contaminated environments, for example live bird markets. There have been some instances of spread from infected mammals to humans as well.

Jan 7, 2025 · Avian influenza A (H5N1), or bird flu, is spreading among cows in the United States. A Yale Medicine expert tells you what you need to know to stay safe.

Dec 31, 2024 · Highly pathogenic avian influenza A (H5N1) viruses have caused widespread infections in dairy cows and poultry in the United States, with sporadic human cases. We describe characteristics of...

Feb 17, 2022 · HPAIV A (H5N1) is highly infectious for a number of bird species, including most species of domestic poultry [1]. Unlike most other avian influenza viruses, this virus has also infected mammals, including cats, pigs and tigers, and has shown to …

Highly pathogenic influenza viruses of the H5N1 subtype have infected more than 600 people since 1997, resulting in the deaths of approximately 60% of those infected. Multiple studies have established the viral hemagglutinin (HA) surface glycoprotein …

Jan 14, 2025 · H5N1 is a very dynamic virus. There's lots of versions of it circulating in lots of different animals and birds, and it's continuing to pose a greater and greater threat in terms of spillover and leading to a pandemic. Should we be concerned about person-to-person transmission? AP: Absolutely.