Our results shown several risk factors (low CD4 cell count, maternal AIDS-related illness, reduced time on HAART, obstetric and infectious concurring illnesses, presence of labor, neonatal coinfecctions, low birth weight, newborns small for gestational age, fail to complete postnatal prophylactic use of oral AZT and maternal and newborn anemia) associated with MTCT of HIV, confirming worldwide data on the subject [4-7,12,15,17,18]. Here, CD4 is linked to anemia (phenotype).