You mean can the baby catch anything?
A woman infected with HIV can pass HIV on to her child during pregnancy, birth, or breastfeeding. Transmission through breastfeeding is estimated to account for one-fourth to one-half of all mother-to-infant HIV infections, depending on the duration of breastfeeding. Yet among babies born uninfected and who are breastfed by untreated mothers with HIV, on average more than 80% remain uninfected when breastfeeding continues for two years.
Helping Women with HIV Decide About Breastfeeding