Aloha, I saw the PBS program as well. I missed the beginning, so I don't know what was said in regards to mothers passing immunity on to their children. My oldest brother contracted polio as a toddler. He was paralyzed for a short time. Thank goodness, he did not suffer as other children did. He regained his ability to walk. The only reminder of his ordeal is a slight limp when he is tired. Btw, my brother was the only one my mother breastfed---for about two months---so maybe this is what helped him. Aloha, Gloria Thai Honolulu, Hawai'i on the island of O'ahu about 20 degrees North of the Equator ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com or call Juno at (800) 654-JUNO [654-5866]