Objectives
This study aimed to strengthen the core capabilities of epidemiological investigation and response teams (ERTs) at the Korea Disease Control and Prevention Agency, drawing on lessons learned from the Middle East respiratory syndrome and coronavirus disease 2019 pandemics. The primary objectives were to facilitate rapid and accurate data collection and analysis, improve communication skills, and simulate real-world on-site responses. Methods: The training program was developed using a scenario involving a novel infectious disease from the World Health Organization priority list entering a community. ERTs collected and analyzed epidemiological data and implemented control measures as they addressed the missions of the scenario. Improvement in competencies was assessed through self-evaluation surveys completed before and after training. Results: A total of 49 participants, including disease control officers, epidemiological investigation officers, researchers, and administrative officials, attended the training. Participant satisfaction with the training was high, scoring 6.4 out of 7, and the improvement in competency was statistically significant (pre-training score, 5.2; post-training score, 6.2; p<0.001). Conclusion: Scenario-based training can effectively enhance the capabilities of ERTs. Such training is essential, as emerging and re-emerging infectious diseases can exhibit unpredictable spread and potentially severe impacts. Therefore, developing diverse scenarios and conducting regular training sessions are necessary to improve the capacities of ERTs.