I have received several calls about rabies over the years and what I have learned is that human milk is not considered a route of transmission of the disease, so it is fine to breastfeed if a mother is bitten by a rabid or potentially rabid animal. And the shots are used due to a low bioavailability of the drug, it is not contraindicated in breastfeeding and it is doubtful that there is any risk to the baby.