Antiviral treatments of HIV and hepatitis B/C disease have, in addition to their therapeutic efect, a strong preventive efect by rapidly reducing the virus load in treated patients, who are consequently much less likely to become a source of infection. Prophylaxis Less proven, but highly probable, is the preventive efect of post‑exposure prophylaxis. Medical consultation and post‑exposure prophylaxis treatment should be immediately accessible to victims of sexual violence as well as for prisoners and prison staf after other inadvertent exposure to HIV and hepatitis B/C infection. Prisons should be prepared for such cases by standard operating procedures or guidelines.29 29. Ibid. Preventing the spread of HIV/Aids and hepatitis B/C in prisons Page 61