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Table 2 Humoral response after pandemic H1N1 vaccination

From: Humoral and cellular responses to a non-adjuvanted monovalent H1N1 pandemic influenza vaccine in hospital employees

  Hemagglutination inhibition Microneutralization assays
  Pre-vaccination Post-vaccination Pre-vaccination Post-vaccination
N 60 60 60 60
Seroprotection rate%a 6.7 66.7d NA NA
Seroconversion rate%b NA 48.3 NA NA
GMTc 6.8 64.9d 10.7 288.4d
GMT Fold-change NA 9.5 NA 26.9
  1. aSeroprotection rate = percentage of subjects with hemagglutinin inhibition titers ≥ 1:40.
  2. bSeroconversion rate = percentage of subjects with pre-vaccination hemagglutinin inhibition titers ≤ 1:10 and post-vaccination titers ≥ 1:40.
  3. cGMT = geometric mean titer.
  4. dp ≤ 0.05 vs pre-vaccination.