Congenitally acquired herpes zoster infection in a newborn.

We report a case of congenitally acquired herpes zoster infection in a newborn whose mother suffered from varicella in her eighth month of pregnancy. The newborn had vesicles with limited distribution on the left C7 region. Herpes zoster infection was clinically suspected and confirmed by the Tzanck test and a high titer of anti-varicella-zoster-virus immunoglobulin M (x1,280).