Effect of seasonal vaccination on H5 neutralizing antibody titers measured by the microneutralization (MN) and the H5pp tests in paired sera from children, adults, and elderly after vaccination with seasonal influenza vaccine and H5N1 vaccine.

aPatient cohorts from Hong Kong.
bPatient cohorts from Europe.
cN: Number of paired samples.
dFor the computation of geometric mean titers, negative sera (titer <20) are assigned value of 10 (first dilution tested 20). Student's t-test was used to calculate p-value.

a. 香港患者队列（Patient cohorts）
b. 欧洲患者队列
c. N：配对样本数量（Number of paired samples）
d. 计算几何平均滴度（geometric mean titers）时，将滴度小于20的阴性血清（negative sera）赋值为10（首次检测的稀释度为20）。采用Student t检验（Student's t-test）计算p值（p-value）。