To examine the full range of host immune responses to this virus in normal mice, we administered an anti-IFNα/β receptor antibody (anti-IFNAR1) 1 day prior to a single inoculation of ZIKV to BALB/c mice and detected a transient viremia from 2 to 3 days post infection (dpi) (Supplementary Fig. 1). This evidence concerns the gene IFNAR1 and infection.