Dec 20, 2024 · Specifically, A(H5N1) and A(H7N9) viruses have caused the majority of avian influenza A virus infections reported in people, with HPAI A(H5N6) and LPAI A(H9N2) viruses also causing human infections in recent years.

May 24, 2022 · Examples of different influenza A virus subtypes currently endemic in animals include H1N1 and H3N2 in pigs (different strains than those found in humans), H3N8 in horses, H3N2 in dogs, and H5N1 in wild water birds and domestic poultry.

Jul 19, 2023 · The human A(H3N8) virus possessed the Eurasian avian H3 gene, North American avian N8 gene, and internal genes of A(H9N2) Eurasian lineage viruses, which have donated their internal genes to multiple subtypes of influenza A viruses.

Dec 30, 2024 · Bird flu is a disease caused by avian influenza A viruses that usually spread between birds, not people. One subtype of bird flu, caused by avian influenza A (H5) virus, is spreading worldwide in wild birds and causing sporadic outbreaks in U.S. poultry and dairy cows.

Apr 12, 2023 · H3N8 bird flu is a different virus to the H5N1 bird flu currently spreading between birds, other animals and humans in the U.S. and worldwide. H3N8 viruses were first identified in wild birds...

Apr 11, 2023 · Avian influenza A (H3N8) viruses are commonly detected globally in animals. Influenza A (H3N8) viruses are some of the most commonly found subtypes in birds, causing little to no sign of disease in either domestic poultry or wild birds.

A cross-sectional study was conducted in seven districts of Bangladesh to estimate the prevalence and subtypes (H3, H5, and H9) of AIV in poultry and identify underlying risk factors and phylogenetic analysis of AIVs subtypes H5N1 and H3N8.

Nov 10, 2022 · Our results suggest that a triple reassortant H3N8 caused severe human disease. There is some evidence of mammalian adaptation, possible via an intermediary mammalian species, but no evidence of person-to-person transmission. The potential threat from avian influenza viruses warrants continuous evaluation and mitigation.

HA segments from the emerging H5N8 viruses during 2014–2021 were downloaded from the GISAID database. As shown in Figure 2a, we also analyzed three H5N1 viruses, including ancestral Gs/Gd/96, the first human virus and a quail virus.

Jun 18, 2024 · Type A influenza has 130 known subtypes, but which ones cause the flu in people? Here’s what the numbers mean. Avid virus-watchers will know that influenza viruses that make the news often feature the letters “H” and “N” in their names, such as H5N1 or H9N2.