Baljet, M.

vaccine influenza group study paper subject response antibody vaccination table difference virus influenza vaccines protection infection trial strain result /n j /76 control seroresponse prevaccination criteria health state titre study design protection rate review influenza vaccine field trials population tendency /new jersey /8/76 adult antibody responses health state type -2-error component calculation 1.3 immunization 60 years effect influenza viruses field control groups 0.2 october system age groups number study groups measure level seroresponse measures significance level antibody response person disease influenza virus vaccine immunity latter 0.7 /chili b /ussr subtype period children /ussr age range literature effectiveness author serum w.e.p 0.0 vaccine components influenza antigens selection study subjects