Bird Flu Update 2024 Usa Pdf. The type of h5n1 that has been decimating bird populations for the last few years was first discovered in the late 1990s. Bird flu is so named because it spreads stably in birds.
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,. Is bird flu worse in fall?