Epidemiological analysis of the domestic rodents plague natural foci among animals in Yunnan Province from 1950 to 2018 / 中华地方病学杂志

ABSTRACT

Objective@#To analyze the epidemic trend of the domestic rodents plague natural foci among animals in Yunnan Province, so as to provide a basis for formulating plague prevention and control strategies.@*Methods@#Monitoring and summarizing data of plague epidemic situation in Yunnan Province from 1950 to 2018 were collected from Yunnan Institute for Endemic Disease Control and Prevention. Descriptive epidemiological method was used to analyze the prevalence of plague among animals. Simple linear regression equations were established using SPSS 21.0 software to analyze the correlation between plague epidemics and rat density, dyeing rate and human plague in 1982-2007.@*Results@#From 1950 to 2018, 51 counties (cities) in 12 regions (prefectures) were confirmed to have animal epidemics in Yunnan Province, and 1 722 epidemic spots were found. A total of 7 152 monitoring sites had been set up in 98 counties (cities). From 1950 to 1956, the plague epidemic in Yunnan Province was confined to western Yunnan; the 1957-1981 was the resting period; 1982-2007, the epidemic spread from west and southwest to south, central, southeast and east of Yunnan Province; after 2008 entered resting period again. The epidemic season of plague was mainly from June to November. Simple linear regression equation analysis showed that the regression equation Y = 9.112 + 44.848X between animal plague (Y) and rat density (X) and the regression equation Y = 2.261 + 0.139X between human plague (Y) and animal plague (X) were statistically significant (F = 9.306, 5.371, P < 0.05).@*Conclusions@#The epidemic trend of plague among animals in Yunnan Province is a "wave type". There is a correlation between animal plague and rat density and human plague. It is the key to prevent the occurrence of animal plague and human plague by monitoring the plague epidemics in animals.