关键词: 病媒生物, 密度监测, 地震灾区

Abstract:

Objective　To evaluate the impact of the earthquake in Wenchuan on vector population and vector-borne diseases, and  to track  the  species, density  and  pathogen-carrying  conditions  of  vectors  in  the  area, providing  basis  for  risk assessment and development of control and prevention of vector-borne diseases. Methods　Visual observation was used to monitor the density of mosquitoes and flies, and rat density was traced through rat trails. Results　The density of mosquitoes, flies and rats reached 5.77 per labor hour, 0.46 per square meter and 0.81 positive dot per 2000 m, respectively. Seasonal fluctuation of mosquito and fly density suggested an upward trend from June to July, which peaked in July and declined afterward. The overall density of rats peaked in June followed by a subsequent decline. Conclusion　The overall density of mosquitoes, flies and rats was generally low, despite a few districts where the density exceeded reference indexes. Scientific and systematic monitoring of vectors in the earthquake-stricken areas played a guiding role in the control and prevention of vector-borne diseases and epidemic outbreaks of related infectious diseases.

Key words: Vectors, Density surveillance, Earthquake-stricken area