Dissemination and implementation of prolonged exposure therapy for posttraumatic stress disorder.

•Evidence-based treatments (EBTs) for PTSD are greatly underutilized.•Prolonged exposure (PE) is an EBT that has been disseminated around the world.•Organizational and personal barriers present a challenge to EBT dissemination.•Top-down directives and strong infrastructure promote successful EBT implementation.•New technology in service delivery such as telehealth may increase access to EBTs.