KRAS and infection: Twenty-four hours following infection with either Asian (Rio-U1) or African (MR766) lineage ZIKV, cultured astrocytes (GFAP+) from infant macaques were co-positive for the viral antigens envelope (E) and nonstructural protein 3 (NS3), indicating permissiveness to infection (Figs. 1a–e and S1a-e).