I dont know about the states but here in S.A we advocate breastfeeding for mothers who have H.I.V, but if they are going to breast feed they are advised to breastfeed exclusively, the baby is not even allowed water, as the introduction of other fluids eg water, formula damage the flora and lining of the GI tract and only then will the baby become susceptible to the virus, it is also cheaper for the more disadvantaged moms.