Mission Children’s Hospital will be restricting visitors to its Neonatal Intensive Care Unit (NICU) after a possible exposure to chickenpox. Hospital officials determined that a group of infants and family members in the NICU were exposed to chickenpox on March 30, March 31 and April 1. A visiting family member who had a fever and later developed chickenpox visited the NICU on those days. Those infants who were potentially exposed and are not otherwise immune are being moved to a separate area of the NICU with a separate airflow system to minimize any further exposure.