A question for Paul Zimmer ; Considering all your information about the immune system of a baby, and how human milk affects it, what about the time schedual given for vaccinating babies for Polio, Tetenus etc. Should thhis schedual be different for babies fed exclusively Human milk as opposed to cows milk? Maybe start vaccinations at a later age? I would be interested in any information about vaccinations and nursing babies. Jayne Miller, LLL Leader,New York ( [log in to unmask] )