Definition of masked. 1  1 : marked by the use of masks a masked ball. 2  2 : failing to present or produce the usual symptoms : latent a masked infection a masked virus.
1 HSV-1. 2  This is the type that usually causes cold sores or fever blisters around your mouth, though it can be spread to your genital area during oral sex. 3  Recurrences are much less frequent than they are with HSV-2 infection. 4  HSV-2.
Abbreviation for herpes simplex virus. A very common sexually transmitted infection; Type-2 HSV causes genital herpes and type-1 HSV usually causes cold sores but also can cause genital herpes; congenital HSV can be transmitted to the fetus during birth if the mother has an active infection.Mentioned in: Maternal to Fetal Infections. very common sexually transmitted infection; Type-2 HSV causes genital herpes and type-1 HSV usually causes cold sores but also can cause genital herpes; congenital HSV can be transmitted to the fetus during birth if the mother has an active infection. Mentioned in: Maternal to Fetal Infections.