Furthermore, a higher reduction rate in the number of chlamydial IFUs was observed in the IFNγ pre-infection treatment (67.6% at 103 IU/mL and 71.2% at 102 IU/mL) rather than in the IFN-γ post-infection treatment (36.8% at 103 IU/mL and 14.8% at 102 IU/mL, p < 0.01). This evidence concerns the gene IFNG and infection.