Comparative study on the epidemiological trends and aspects of murine typhus in Korea in the last decade (2006–2015)

Abstract

Introduction: In this study, we undertook a retrospective analysis of the epidemiological aspects and risk factors of murine typhus (MT) in Korea in the last decade (2006–2015). Materials and Methods: MT infections in Korea using a total of 411 cases obtained from the Diseases Web Statistical System of the Korea Center for Disease Control and Prevention. Results: In a total of 411 MT infection cases, the cumulative incidence rate was 0.08/100,000 populations. Men were slightly more infected by MT as compared to women (51.3% vs. 48.7%), and a higher incidence of MT was observed in people aged over 40 years (93.4%; P < 0.01). The seasonal pattern of outbreaks revealed that most infections occurred from October to November (69.1% of the total cases) (P < 0.01). Significantly more outbreaks occurred in the southern part (53.5%) of the Korean peninsula as compared to its northern (33.3%) and central (10.7%) parts, as well as the Jeju Island (1.0%) (P < 0.01). In addition, the number of MT infections was significantly higher in rural and sea-village (87.6%) than in urban areas (12.4%; P < 0.01). Conclusion: In conclusion, the rapid reemergence of MT outbreaks can be minimized through health education, and a strong enforcement of control measures against rats and their ectoparasites could markedly reduce the transmission of this infection to humans in high-risk areas.

Keywords

• Epidemiological aspects
• murine typhus
• surveillance
• The Republic of Korea