The primary endpoint will be the seroprotection rate which is defined as the proportion of subjects with HAI titer ≥ 40. 3 weeks post vaccination [clinicaltrials_resource:543b0d08b98e1941c597d3d0cee6d3ca]

Serum samples will be tested for anti-hemagglutinin (HA) antibodies by hemagglutination inhibition (HAI).

The primary endpoint will be the seroprotection rate which is defined as the proportion of subjects with HAI titer ≥ 40. 3 weeks post vaccination [clinicaltrials_resource:543b0d08b98e1941c597d3d0cee6d3ca]

Serum samples will be tested for anti-hemagglutinin (HA) antibodies by hemagglutination inhibition (HAI).