<prompt> Which of the following exposure carries the maximum risk of transmission of HIV -Sexual intercourseBlood transfusionTrans-placentalNeedle prick  <response>: HIV transmission Route of Transmission Percentage of total cases Efficiency of route Sexual 87 0.01-1 Blood and blood products 01 90 Sharing needlesSynringes 02 0.3 Mother to Child transmission 05 30 Ref : park 25th edition Pgno : 364 