Dear Jan, I can tell you my own experience with chicken pox and a nursing toddler. When my son was 15 months old my husband had shingles (the same virus). Several weeks later my three year old daughter came down with chicken pox and I proudly thought my milk was protecting my son, who was sleeping in the bed with his father and me at the time. However, there must be a difference between sleeping in the same bed and the intimate contact between siblings. My son succumbed to chicken pox another few weeks later. Both children, by the way had a fairly mild case. Lesley Robinson, IBCLC, LLL Leader Corning, NY