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Table 2 Antigenic characterization of wild-type and mutant H1N1 influenza A viruses by HI assay

From: Influenza A virus hemagglutinin mutations associated with use of neuraminidase inhibitors correlate with decreased inhibition by anti-influenza antibodies

H1N1 virusTiter a
Goat antiserum against CA/04Ferret antiserum against:mAbs against CA/04:
CA/04A/CA/07/09A/TN/1–560/0928665286662866728668
CA/04V152I00000000
CA/04G155E-3-3-3-3>-511>-6
CA/04S162N101001−10
CA/04S183P0000-2−1-10
CA/04D222G−2− 6−3− 4>-500>-6
  1. aValues represent the differences between the HI titers of antisera or mAbs (reciprocals of the serum/antibody dilutions that inhibited 8 hemagglutination units of virus) in the reactions with the wild-type CA/04 and mutant H1N1 viruses in log2 units