It is generally safe for a mother with hepatitis B to breastfeed her baby, as long as certain precautions are taken. The risk of transmission through breastfeeding is low, especially if the baby receives proper vaccination and immunoglobulin treatment at birth. However, it is important for the mother to consult with her healthcare provider and follow their guidance. The healthcare provider may recommend additional measures such as antiviral medication or monitoring the baby's blood tests regularly. It is also crucial for the mother to maintain good personal hygiene, including washing hands before handling the baby and avoiding cracked or bleeding nipples. By following these precautions, the risk of transmitting hepatitis B through breastfeeding can be minimized significantly.