Evaluation of Two Zika Viruses for Use in Controlled Human Infection Models (CHIM)

This study will include 4 cohorts of 14 ZIKV and DENV-naïve female and male subjects, 18 - 40 years of age (total: up to 56 subjects). Within each cohort, 10 subjects will receive ZIKV and 4 subjects will receive a placebo on Study Day 0. Cohorts 1 and 2 (Dose = 10\^2 PFU) will be enrolled first and will enroll only women. Cohorts 3 and 4 (Dose = 10\^2 PFU) will enroll men.