Investigating allegations of sexual abuse of children is very difficult for law enforcement. Successful resolution of these cases is often hampered by victim reluctance or inability to communicate as well as the scarcity of corroborating evidence. While the consequences of all abuse of children are of great concern to us, sexual abuse can be particularly devastating, especially when a sexually transmitted disease is part of the tragic legacy of violation. This guide is designed to present additional investigative techniques, utilizing the presence of a sexually transmitted disease, which will assist in identifying or eliminating suspects in sexual abuse cases. Successful investigations are crucial because they can be the gateway to treatment for victims and can help protect them from further victimization. The guide also seeks to sensitize investigators to the need for personal precautions when investigating these cases and helps them to recognize children in need of immediate medical attention. OJJDP is proud of this offering and urges you to make use of it as we work to protect our children.