Varicella is a disease which is contagious for some days before skin lesions appear to be evident, thus, isolation of the mother is useless. On immune – compromised infants, or those mothers to whom varicella has been first noticed within 5 days before, or, 2 days after delivery (it means that a low rate of antibodies have been transferred to the newborn) start therapy with hyperimmune immunoglobulin and follow-up the baby. On those cases of Herpes zoster infection, take standard hygienic measures (hand washing) and avoid close contact with skin lesions.