Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect...

Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu")...

Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever...

known avian influenza viruses had a glutamic acid at position 627, while all human influenza viruses had a lysine. HA: (hemagglutinin): Avian influenza HA...

Since 2020, outbreaks of avian influenza subtype H5N1 have been occurring, with cases reported from every continent except Australia as of February 2025...

Thogotovirus. The first four genera contain viruses that cause influenza in birds (see also avian influenza) and mammals, including humans. Isaviruses infect salmon;...

affected. Classification as either Low Pathogenic Avian Influenza (LPAI) or High Pathogenic Avian Influenza (HPAI) is based on the severity of symptoms in...

may be fatal. Humans can rarely become infected with strains of avian or swine influenza, usually as a result of close contact with infected animals; symptoms...

one cause of seasonal influenza (flu). Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). Subtypes of IAV are...

others, is an antiviral medication used to treat and prevent influenza A and influenza B, viruses that cause the flu. Many medical organizations recommend...

spread in 2008. The H5N1 strain is a fast-mutating, highly pathogenic avian influenza virus (HPAI) found in multiple bird species. It is both epizootic (an...

the human H1N1 and an avian influenza virus, which thereafter became the active influenza A virus in humans. In 1977, an influenza virus bearing a very...

that adapted from its avian influenza origins. Vaccines have been developed for both strains. The two strains of Type A influenza virus found in canines...

clinically healthy racing pigeons as a reservoir for avian paramyxovirus-1 and avian influenza virus". Avian Pathology. 42 (6): 557–565. doi:10.1080/03079457...

New Jersey: Rowman & Littlefield. ISBN 0-8476-7429-0. "History of Avian Influenza". extension.org. Retrieved 20 January 2017. Lam, Vincent; Lee, Colin...

one cause of seasonal influenza (flu). Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). Subtypes of IAV are...

Cats with avian influenza exhibit symptoms that can result in death. The avian influenza viruses cats may get include H5N1 or H7N2, notable pathogenic...

H5 N2 is a subtype of the species Influenzavirus A (avian influenza virus or bird flu virus). The subtype infects a wide variety of birds, including chickens...

flu viruses: North American swine influenza, North American avian influenza, human influenza, and two swine influenza viruses typically found in Asia and...

control in free range farming has been associated with outbreaks of avian influenza. Instead of keeping them in cages, free-run laying hens roam freely...

current by the WHO at https://www.who.int/teams/global-influenza-programme/avian-influenza/avian-a-h5n1-virus and complements the country-specific information...

virus. H7N2 is considered a low pathogenicity avian influenza (LPAI) virus. With this in mind, H5 & H7 influenza viruses can re-assort into the Highly Pathogenic...

hemagglutinin (HA) gene of the H9N2 influenza viruses could be divided into Eurasian avian and American avian lineages. The Eurasian avian lineage involved three distinct...

Retrieved 5 April 2020. "Cumulative number of confirmed human cases for avian influenza A(H5N1) reported to WHO, 2003 – 2020" (PDF). 8 May 2020. Archived (PDF)...

influenza viruses are named according to the combinations of HA and NA proteins expressed (e.g., H1N1 and H5N2). A highly pathogenic avian influenza A...

Swine influenza is an infection caused by any of several types of swine influenza viruses. Swine influenza virus (SIV) or swine-origin influenza virus...

of three different genes from an H2N2 virus that originated from an avian influenza A virus, including the H2 hemagglutinin and the N2 neuraminidase genes...

The genetic structure of H5N1, a highly pathogenic avian influenza virus (influenza A virus subtype H5N1), is characterized by a segmented RNA genome consisting...

antibodies detectable with the modified assay, it was estimated that avian influenza A/H7N7 virus infection occurred in at least 1000, and perhaps as many...

of zoonotic diseases, including the 2002–2004 SARS outbreak, 2013 avian influenza outbreak, and the COVID-19 pandemic. Small-scale wildlife farming emerged...