HIV can only be transmitted via 3 specific bodily fluids, namely blood, sexual secretions (semen/vaginal fluids) and breast milk. Therefore, you can only get HIV:

• through unprotected sex, the most common way it is spread in Singapore
• through the sharing of needles - especially if you're an intravenous drug abuser; and/or
• through contaminated blood transfusions* at hospitals using unscreened blood
  (* all blood donations in Singapore are tested for HIV and are safe for transfusions.)

An HIV-positive mother can also pass on HIV to her baby during the stages of pregnancy, childbirth and/or breastfeeding.