Levels of cytokines secreted by human PBMC after recall stimulation with ffLVS or ffSchu S4 for five days.

<p>Cytokine concentrations were measured in cell culture supernatants using multiplex analysis. Median values ± SEM from PBMC samples of 14–16 individuals per donor group are shown (black bars indicate convalescent patients; grey bars indicate LVS vaccinees; white bars indicate naïve donors). Statistically significant differences between immune and naïve donors are marked by asterisks (<i>P</i><0.05).