<prompt> Least common mode of transmission of HIV -Homosexual contactHeterosexualIV drug abuseTransfusion of blood products  <response>: Ans-DMost common route: Heterosexual 88Least common route: blood mediated 1Risk of transmission:blood transfusion 90perinatal 25-30drug abusers 3sexual route 0.01-1Needle prick skin injury 0.4mucous membrane 0.05Highest prevalence: drug abusers 9General prevalence 0.28What can be deduced from the above is that heterosexual contact with the source person is the most common route of transfer, nevertheless the chance of transmission is less in heterosexual route, wherein this chance chance of transmission is highest in blood or blood product transfusion related catastrophe.Every third of infected HIV mother gives birth to a child with HIV. But the current consensus in India is though the mother is HIV positive and the child has chances of getting HIV if breast fed from the mother, they are encouraged to breast feed the child, for the child experiences more morbidity of malnutrition if not breast fed which could be more dangerous and lead to several other plethora of diseases. This is in the cases when there is no one else to breast feed the baby. 