%0 Journal Article
%T Vaccination history as a confounder of studies of influenza vaccine effectiveness
%A Alicia M. Fry
%A Brendan Flannery
%A Ivo M. Foppa
%A Jessie Chung
%A Jill M. Ferdinands
%J Archive of "Vaccine: X".
%D 2019
%R 10.1016/j.jvacx.2019.100008
%K Influenza
%K Vaccine
%K Vaccine effectiveness
%K Vaccination history
%K Confounding
%K Test-negative study
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6668227/