Avian Flu Update 2024. Since the resurgence of highly pathogenic avian influenza (hpai) a (h5n1) virus, clade 2.3.4.4b, during 2021, these viruses have spread widely among birds worldwide,. Massachusetts cows have thus far been spared of the avian flu.
With the recent detections of the eurasian h5 strain of highly pathogenic avian influenza (hpai) in wild birds and domestic poultry in the united states, bird. Since the resurgence of highly pathogenic avian influenza (hpai) a (h5n1) virus, clade 2.3.4.4b, during 2021, these viruses have spread widely among birds worldwide,.
