To quantify the effect of IFN-α on VZV gene transcription, we analyzed seven VZV genes that are otherwise normally expressed during immediate early (IE) (ORF4, ORF61 and ORF62), early (E) (ORF28 and ORF51) and late (L) (ORF23, ORF68) phases of infection [1, 4]. Here, IFNA1 is linked to infection.