RT Journal Article SR Electronic T1 Potential antigenic mismatch of the H3N2 component of the 2019 Southern Hemisphere influenza vaccine JF bioRxiv FD Cold Spring Harbor Laboratory SP 681734 DO 10.1101/681734 A1 Sigrid Gouma A1 Madison Weirick A1 Scott E. Hensley YR 2019 UL http://biorxiv.org/content/early/2019/06/24/681734.abstract AB Here, we find that the egg-adapted H3N2 component of the 2019 Southern Hemisphere influenza vaccine elicits an antibody response in ferrets that is highly focused on antigenic site A of hemagglutinin. This is potentially problematic since most H3N2 viruses currently circulating in the Southern Hemisphere possess antigenic site A substitutions.