Serologisk respons målt med Hæmagglutination- Inhibition - (HI) - assay viste, at 92% af de vaccinerede opnåede serumbeskyttelse, og 75% serokonverterede efter to injektioner med 7, 5 µg.
Serologic responses obtained with the Hemagglutination Inhibition (HI) assay showed that 92% of subjects achieved seroprotection and 75% seroconverted after two 7.5 μ g injections.