Bruijn, I.A. de

vaccination influenza vaccine study strain influenza vaccination group subject protection outbreak antibody trial hoskin postvaccination vaccinated response virus effect number difference influenza vaccine table titre article serologic result protection rates field beyer epidemic senieur efficacy age groups vaccine strain serologic studies netherland /beijing field studies antibody response analysis student masurel n masurel adult attack vaccine strains postvaccination titres cohort junieur postvaccination hi titres /taiwan sprenger mjw season titrc meta-analysi t-test influenza virus vaccine attack rate titer heterogeneity b /panama vaccination group /panama study design influenza b vaccine protection rate attack rates vaccinated subjects volume infection lancet bruijn subtype mortality paper entry serologic prds hi postvaccination influenza infection control