<prompt> Which of the following act as a means of transmission of HIV infection in newbornTransplacentalBreast feedingDuring deliveryAll of these  <response>: Maternal-fetal infant transmission The probability of transmission of HIV from mother to infantfetus ranges from 15 to 25 in industrialized countries and from 25 to 35 in developing countries.HIV can be transmitted from mother to fetusinfant in the following ways :a In utero During pregnancyb During delivery Perinatal Most commonc After birth by breastfeeding Least common.Firstborn twin is more commonly infected than the second twin.Cesarean section results in decreased transmission to the infant.Vit. A deficiency increases the risk of transmission.The major risk factor of transmission is the presence of a high maternal level of plasma viremia. 