I'm a little late on this post, but several yeaers ago we had a mother bitten by a rabid animal. Texas Department of Health Rabies Division researched this for us and confirmed that rabies is not transmitted through milk and the antidote is not contraindicated in breastfeeding and further is not orally bioavailable if ingested- that is why a series of shots is given. Please reassure this mother. Cathy Liles