Infection rates, transmission rates and median titers of Ae. aegypti mosquitoes orally exposed to ZIKV, CHIKV, or both ZIKV and CHIKV.

Infection and transmission rates of mosquitoes in the co-infection treatment were determined as the percentage of mosquitoes with either ZIKV, CHIKV, or both viruses in their body or saliva, respectively, out of the total number of orally exposed mosquitoes within the respective treatment. Infection and transmission rates are presented as percentages (number of virus positive mosquito bodies or saliva samples / total number of engorged mosquitoes). Titers were determined for mosquitoes with a fully disseminated infection of ZIKV, CHIKV, or both. The results represent the cumulative data from three independent biological replicates.