H3N8 is a subtype of the species Influenza A virus that is endemic in birds, horses and dogs. It is the main cause of equine influenza and is also known as equine influenza virus. In 2011, it was reported to have been found in seals. [1]

Sep 14, 2022 · We analysed clinical, epidemiological, and virological data for a 5-year-old boy diagnosed with H3N8 AIV infection in May, 2022, during influenza-like illness surveillance in Changsha City, Hunan Province, China. H3N8 virus strains from chicken flocks from January, 2021, to April, 2022, were retrospectively investigated in China.

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.

Dec 20, 2024 · Equine (horse) influenza A (H3N8) virus routinely circulates and can cause illness in horses, and canine (dog) influenza A (H3N2) virus routinely circulates and can cause illness in dogs. Avian influenza A viruses that infect birds have evolved into distinct genetic lineages based on the geographic locations where they were first detected.

The novel H3N8 viruses possess the ability to bind to both avian-type and human-type sialic acid receptors, which pose a threat to human health. No poultry worker in our study was positive for antibodies against the H3N8 virus.

Jul 19, 2023 · On 25 May 2022, China reported a second human case with avian influenza A (H3N8): a five-year-old boy from Changsha City, Kaifu District, Hunan Province, China, developed mild respiratory symptoms (fever and chills) on 9 May 2022 and tested positive. The boy visited a live bird market prior to onset of symptoms.

Apr 12, 2023 · A woman in China recently died of H3N8, a subtype of bird flu that has only infected three known people to date, the World Health Organization (WHO) reported Tuesday (April 11). All three human...

Sep 14, 2023 · Avian H3N8 influenza virus infection has caused acute respiratory distress syndrome and deaths in humans. An H3N8 virus isolated from a patient with severe pneumonia replicates efficiently in human airway epithelial cells, is highly virulent in mammalian hosts, and is aerosol-transmissible in ferrets, demonstrating its epidemic/pandemic potential.

Here, we investigate the emergence the H3N8 CIV and its origin from the H3N8 EIV, describe the later extinction of H3N8 in dogs while also following the continuing evolution and epidemiology of EIV among horses in several geographic regions of the world.

Nov 10, 2022 · High-throughput sequencing revealed a reassortant avian influenza A-H3N8 virus (A/Henan/ZMD-22-2/2022 (H3N8) with avian-origin HA and NA genes. The six internal genes were acquired from...