My sister had mrsa 2 yrs ago, she will have a new grandson in 2 mos. She is worried about whether she is still a carrier and will she contaminate the baby. How can she be sure she is mrsa free? What tests are there? If she is a carrier can she be around the newborn? Her son's pediatrican says no. She has never had another outbreak and her family members that live in the same house, including an infant have never had any problems. She is very concerned she won't be able to be around her new grandson and wants to take every precaution. She needs info fast. Thanks!