I don't have any particular treatment ideas for you. But I would say that it's safe to continue breastfeeding. It's likely that the baby is now colonized as well, BUT in most people MRSA just lives harmlessly on the skin and doesn't cause a problem. It's just certain people that it invades and infects. We don't know what factors determine who MRSA invades and who just has it harmlessly on their skin. Bottom line is that I doubt you could prevent it from getting on your baby. As long as you don't seen large sores or the baby doesn't start getting abscess infections, then it should be fine. Swallowing MRSA in the milk is ok - the germs probably die in the stomach.