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Types of prevention are based on the paths of infection. Any kind of a preventative protection can be seen as active HIV prevention.
Please note that in particular pregnant women (in industrialized countries) can avaid the assault of the virus to the unborn child. There are certain drugs, which prevent the transfer of the virus to the baby. These drugs have a fairly high level of reliability - the chance of an HIV negative child is high, if the mother joins medical treatment at the beginning of pregnancy.
Furthermore, we have explicitly pointed out that unprotected sexual intercourse is one of the main transmission routes for the HI virus. Condoms protect against the transmission of body fluids and therefore also against HIV. Nevertheless, even condoms can't give a 100 percent protection against HIV, because they may break, burst and slip. For your own safety and the safety of your partner you should make a preventive HIV test before having sex.
In addition, the HI virus is often transferred under drug addicts by using unsterilized needles and syringes. If you consume hard drugs, you should always use fresh needles and syringes to protect against a HIV infection. It's much better and safer to stop taking illegal drugs!