Herpes Simplex Virus in Newborns

Herpes Simplex Virus (HSV) is a virus that usually causes skin infections. There are two types of HSV: HSV type 1 usually causes small blisters on the mouth, eye, or lips (cold sores) and HSV type 2 usually affects the genital area. HSV infection in newborn babies can be very severe and can even cause death. This is because newborns' immune systems are not fully developed.