IFNG and infection: Specifically, plasma IFN-γ levels were increased by 1.84-fold, 4.3- to 5.7-fold, and >50-fold in vaccinated/infected (vs. non-vaccinated/infected) mice at day 10 and day 21 pi and 7 days after re-infection, respectively (^p < 0.05, Figures 6A–C).