Matthew Keller

Jan 5, 2024 | onlinelibrary.wiley.com | Bo Shu |Malania M Wilson |Matthew Keller |Ha Tran

1 BACKGROUND During the 2016–2017 influenza season, the influenza B (Inf B/Victoria (B/VIC) lineage variant viruses emerged with two or three amino acid (AA) deletions within the K162N163D164 region of the hemagglutinin (HA) protein and rapidly spread worldwide.1 These deletion variant viruses are antigenically distinct from each other and from the progenitor B/VIC virus that lacked the deletions, resulting in four co-circulating subclades that were genetically and antigenically distinct...