On Day 6 (Supplementary Material, Figure S1), some pro-inflammatory cytokine levels in the BALF increased for oseltamivir, azithromycin, and lefamulin when compared to the vehicle control, e.g., IL-1β, IL-2, IFN-γ for oseltamivir and azithromycin, and IL-6 and IL-12p70 for the ‘high’ dose lefamulin, which may reflect an altered progression of infection and cytokine production kinetics. This evidence concerns the gene IL6 and infection.