If you've had unprotected sex with someone who is HIV-negative, they can get PEP treatment. Even if the person has a different chance of being infected (via blood or semen). PEP stands for Post Exposure Prophylaxis: a course of HIV inhibitors to prevent you from becoming HIV positive. In most cases, it is indeed possible to prevent HIV infection with PEP. The person must then start the PEP treatment as soon as possible, in any case within 72 hours.
Where can you go for PEP?
PEP is not offered everywhere in the Netherlands. Contact the GGD in your region to see where to go. Call the emergency department of the OLVG outside office hours and during the weekend (020-5999111). Centers for sexual violence also offer PEP.