Dengue Hemorrhagic Fever Surveillance Evaluation in Suranaree University of Technology Hospital, Nakhon Ratchasima, 2024

Abstract

This cross-sectional descriptive study aimed to evaluate the dengue surveillance system at Suranaree University of Technology Hospital, Nakhon Ratchasima Province, focusing on the disease reporting process, quantitative attributes, and qualitative attributes. Quantitative data were obtained from a retrospective review of 344 patient medical records diagnosed with dengue hemorrhagic fever (ICD-10 codes) between January 1 and December 31, 2024, and compared with cases reported to the national epidemiological surveillance system (D506). Qualitative data were collected through interviews with key personnel involved in the surveillance process. The study found that all hospital departments followed a consistent protocol. When a physician diagnosed or suspected a dengue case, the ward nurse promptly notified the disease prevention and control unit via various communication channels. Epidemiology staff reviewed and compiled daily case lists, conducted individual investigations, and submitted timely reports to relevant authorities. Quantitative evaluation showed a completeness/sensitivity rate of 71.08%, indicating a good level of performance. The positive predictive value was 95.55%, reflecting a strong alignment with actual disease occurrence. Data accuracy was 100%, and the timeliness of case reporting within a 7-day timeframe reached 87.85%. Qualitatively, the dengue surveillance system is well accepted by healthcare personnel, who recognize its importance. The system is simple, with clear procedures, and demonstrates high flexibility, allowing case reporting through various channels based on the local context. It also exhibits strong stability, enabling staff at all levels to use the system effectively for case investigation and disease control. However, the study suggests that surveillance coverage should be expanded beyond confirmed diagnoses to include all cases meeting the clinical definition of dengue hemorrhagic fever. Additionally, follow-up on final medical diagnoses should be emphasized to enhance the timeliness and accuracy of outbreak control responses.