关键词: 虫媒传染病, 流行性乙型脑炎, 黑热病, 疟疾, 地震

Abstract:

Objective To investigate the incidence of insect-borne diseases before and after the May 12 Earthquake in Longnan, Gansu province, and to analyze role of disinfection on insect-borne diseases after the earthquake. Methods From 2005 to 2009, data on Japanese encephalitis (JE), kala-azar and malaria in the area were collected to determine the incidence and analyze the epidemiological characteristics of the insect-borne diseases before and after the earthquake. Results From 2005 to 2008, a total of 164 JE cases were reported with an average incidence rate of 1.20/10⁵. No significant difference between the JE incidence in 2008 and that from 2005 to 2007 (P≥0.05). From 2005 to 2009, 501 kala-azar cases were reported with an annual incidence rate of 3.68/105. More cases were observed in men than in women (P＜0.001). No significant difference was noted between the incidence in 2009 and incidences in 2007 and 2009 (P≥0.05). From 2005 to 2008, seven cases of malaria were reported with an annual incidence rate of 0.06/105. Wudu district and Wenxian county were worst affected by insect-borne diseases. Conclusion JE and kala-azar were historically common insect-borne infectious diseases in Longnan. After the earthquake, the incidence of these diseases did not increase compared to the previous years. The reason may be closely related to insect disinfection work after the earthquake.

Key words: Insect-borne infectious diseases, Japanese encephalitis, Kala-azar, Malaria, Earthquake