CyTOF analysis of the percentage of infected cells in different cell populations after mock, ZIKV, or DENV2 exposure. The percentage of cells with expression of the viral NS3 and E (double stained with E1D8 and 4G2 antibodies) were determined within the main populations of PBMCs after mock, ZIKV, or DENV2 ex vivo exposure of PBMCs from 5 healthy donors. Means ± standard errors of the means (SEM) are indicated. **, P < 0.01; *, P < 0.05.