OBJECTIVE: To provide a review of cancer vaccines, how they work, and the current state of the science underlying these treatments. DATA SOURCES: Research studies, review articles, book chapters, personal communications. CONCLUSION: Vaccines have been studied in a variety of malignancies; however, melanoma has provided the best tumor model for vaccination. Clinical trials continue to investigate the optimal vaccine, route, and immunization schedule. IMPLICATIONS FOR NURSING PRACTICE: Oncology nurses must grasp a widening array of therapeutic options for cancer patients. The educational needs of the patient will be better met through a thorough understanding of basic concepts of newer cancer therapies.