Recognizing the challenges faced by healthcare providers in attending face-to-face training, the Denver PTC offers a growing number of online learning and distance learning options. National STD Curriculum eLearning Modules The National STD Curriculum modules are free as part of the National Network of Clinical STD Training Centers funded by the Centers for Disease Control and Prevention (CDC). The site addresses the epidemiology, pathogenesis, clinical manifestations, diagnosis, management, and prevention of STDs. Free CME credit and CNE/CE contact hours are provided. Click here to view the National STD Curriculum modules.