 Often, behaviours that lead to women contracting the HIV virus include engagement in sexual intercourse within a heterosexual relation with someone who already has HIV/AIDS, using drugs intravenously or receiving infected blood products.Risks of passing on the HIV virus to an unborn child is extremely high for women whom have been diagnosed with HIV/AIDS.In Australia, it is a part of routine antenatal testing that mothers undergo a blood test to check for HIV/AIDS.