Provisional sho antiretroviral regime given in the peripaum period reduces the risk of veical transmission by

Most transmission of HN occurs during pregnancy and bih, breastfeeding may account for 5-15% of infants becoming infected after delivery Studies have demonstrated that truncated regimens of zidovudine alone or with Lamivudine given to mother during last few weeks of pregnancy or even during labour & delivery & to the infant for a week or less reduced transmission to infant by 50% compared to placebo. rEF : katzung 12 th ed.