(A) Anti-CHIKV IgG titers from the vaccination phase were determined with a CHIKV virion-based ELISA. Sera from four animals were pooled and diluted 1:500 for the assay. Statistical analyses were performed using two-tailed paired T-test (*P =0.029 RH-CHIKV 6 dpv, *P =0.029 RH-CHIKV 90 dpv, *P =0.029 RHEV-CHIKV 6 dpv, *P =0.029 RHEV-CHIKV 90 dpv, *P =0.029 EV-CHIKV 90 dpv). 