AIDS Certified Registered Nurse (ACRN) Certification Practice Exam 2026 - Free ACRN Practice Questions and Study Guide

Unprotected sexual activity is the most frequently associated mode of HIV transmission. This mode of transmission occurs when bodily fluids, such as blood, semen, vaginal fluids, or breast milk, come into contact with mucous membranes during sexual intercourse. The virus is present in high concentrations in these fluids, particularly in semen and vaginal secretions, which facilitates the transmission during unprotected sex.

Furthermore, engaging in unprotected sexual activity increases exposure risk, especially in cases where one partner is HIV positive. Even when viral loads are undetectable due to effective antiretroviral therapy, risk may still be present if appropriate precautions aren’t used. In the context of public health, campaigns often emphasize the importance of using protection to reduce the risk of HIV and other sexually transmitted infections (STIs).

While other routes such as blood transfusions, injection drug use, and perinatal transmission are significant, they represent less common transmission pathways compared to the prevalence of sexual transmission in the general population.