Objective To monitor plague host animals, its vectors and plague epidemic and to provide a scientific basis for timely detection, prevention and control of plague epidemic. Methods Live rats were captured with cage traps in the daytime and were then taxonomically identified. The liver, spleen, and serum samples were collected from the rats for isolation of plague bacteria and detection of F1 antibody. The animals with unexplained death were searched for, and epidemic surveillance was conducted. Results TThe dominant species of house rats were Rattus norvegicus and R. tanezumi, and the dominant species of field rats was Apodemus agrarius. The mean rodent densities were 3.19% indoor and 2.82% outdoors. The mean flea-carrying rate of rodents was 1.89%, and the total flea index of rodents was 0.0493. The dominant species of rat fleas was Leptopsylla segnis. The samples from live rats were negative for F1 antibody and pathogens. Plague cases were not found althouth large numbers of animals with unexplained death. Conclusion The species compositions of plague hosts and vectors in historical epidemic areas remain stable with low densities, and plague epidemic has not been found. However, plague surveillance should still be performed for timely detection of abnormal signals and prevention of human cases.

Objective To evaluate effect of control measures on mosquito and fly populationsin urban Quzhou based on the monitoring of their species and density. Methods The mosquito and fly density was monitored using lamp traps and cage traps, respectively. Results There were 4 species and 3 genera of mosquitoes in urban areas, predominated by Culex pipiens pallens, which accounted for 96.82% of the total population. The anual average adult density was 5.28 per lamp-hour, which peaked from June to August. There were 6 genera and 4 families of flies in this area, predominated by Lucilia and Musca, which accounted for 68.22% and 23.82%, respectively. The annual average adult density was 39.74 per cage, which peaked from June to August. Conclusion As a result of comprehensive control strategies, diminishing breeding grounds in the city have lead to a significant decrease in mosquito and fly population densities.

【Abstract】 Objective To analyze the epidemic characteristics of rabies from 1985 to 2007, and explore the reasons causing the increase of rabies and to provide the control measures. Methods The data of rabies incidences collected from 1985-2007 were classified and analyzed by Excel 2003 and SPSS 13.0. Results There were 31 cases of rabies during 1985-2007 in Quzhou, and 31 died, the mortality was 100%. Most of the cases occurred before 1992, and there were no case from 1993 to 2003.But the incidence gradually increased after 2004. There were cases reported in all counties except for Kaihua, and the epidemic could be seen each month. Children and young adults were more frequently affected and the incidence in males was higher than that in females. The peasants were the most susceptible peoples, which accounted for 77.42%. The cases were caused by dog bitten and most of them did not receive wound treatment or immunization. In recent years, the exposure rate of people increased from year to year, but the immunization rate after exposed tended to reduce. Conclusion The incidence of rabies in Quzhou presented a rapid rising trend. The increase of dog quantities leaded to the rising of exposure rate. The reasons leading to the increase of epidemic situation were the shortage of disease prevention knowledge, non?timely treatment of exposure wounds and immunization and the rising of rabies vaccine price. It should take specific measures to control rabies.