#US CDC confirmed #influenza A(#H1N2)v virus #infection {of swine origin}: #Michigan Department of Health and Human Services notified CDC of a specimen that tested positive for influenza A but lacked reactivity with diagnostic tests for contemporary human influenza viruses representing either H1pdm09 or H3 subtypes on July 31. More: https://www.cdc.gov/flu/swineflu/spotlights/two-human-infection-swine-flu.htm?ACSTrackingID=USCDC_7_3-DM110155&ACSTrackingLabel=First%20Human%20Infections%20with%20Flu%20Viruses%20from%20Pigs%20Reported%20for%202023&deliveryName=USCDC_7_3-DM110155 #epizootic #enzootic #zoonoses #alert

''Based on sequence analysis, the HA and NA genes showed that this isolate, designated A/ #Taiwan /1/2023 #H1N2v, is a novel #reassortant virus containing HA & NA genes segments derived from #swine influenza A(#H1N2) viruses, which may have been circulating locally for decades. The other 6 internal genes are from #human influenza A #H1N1pdm09 viruses. HA (#H1) belongs to influenza clade 1A, #Eurasian #Avian-like, and shares a similarity of 94% to A/Taiwan/2021 (H1N2)v.''