… from influenza vaccination were raised again following publication of reports from European
studies of influenza vaccine effectiveness during the 2011–2012 influenza season [9–11]. …

… According to these requirements, the mean fold increase (MFI) in HI antibody titres following
influenza vaccination in individuals aged 18–60 years should exceed 2.5, with at least 70% …

… of pre-epidemic titers ( 2 1: 128 vs I 1:64)‘,“. As a result, vaccine efficacy against illness
related to a given strain corresponds to the product of the antibody efficacy and the achievement …

… Antibody titers as a sole measure of influenza vaccine efficacy may fail to detect enhanced
clinical protection. ▶ Novel immunologic targets and correlates of protection are needed to …

… vaccines provides enhanced functional antibody titers, … , LAIV is more efficacious than
trivalent inactivated vaccine (TIV) … previous influenza immunization, but TIV is more efficacious …

… 1943, the first efficacy trial of an inactivated influenza vaccine … HAI titers were associated with
protection in both vaccinated … with titers <64; few subjects in the vaccinated group had titers …

… dose vaccine induced significantly higher antibody titers than … old, levels of serum and nasal
antibody to hemagglutinin and … influenza vaccines; a recent influenza vaccine efficacy trial in …

… on age, health status and vaccine components) achieved protective hemagglutination
inhibiting (HI) antibody titers after vaccination with the virosomal influenza vaccine. Acceptable …

… influenza; antibodies to NA may also correlate with protection as well as reduced severity of
illness [4–8]. Antibody titers to influenza … –2007 influenza seasons, evaluating the efficacy of …

… were associated with similarly low frequencies of systemic vaccine … levels of serum
haemagglutination inhibiting antibody and significantly greater levels of local IgA antibody (influenza …