<prompt> Least common mode of transmission of HIV?Homosexual contactHeterosexualIV drug abuseTransfusion of blood products  <response>: Ans. is d i.e., Transfusion of blood product o Homosexual or Heterosexual contact -4 50-70 o IV drug abuse -- 25 o Recipient of blood and blood components -- 1 o Hemophiliaes receiving factor VIII or IX 0.5 