论文部分内容阅读
目的测定青海省鼠疫自然疫源地鼠疫菌毒力,建立青海省鼠疫自然疫源地毒力基础数据。方法选取392株鼠疫菌进行毒力试验,用SPSS18.0计算各试验菌株的半数致死量(LD50),运用地方病地理信息系统分析其空间构成。结果392株鼠疫菌中鼠疫强毒株有367株,占93.62%;鼠疫中等毒力株有10株,占2.55%;鼠疫低毒株有10株,占2.55%;鼠疫弱毒株有5株,占1.27%;发现青海省鼠疫自然疫源地祁连山型菌株毒力比青藏高原型菌株毒力强。结论青海省鼠疫自然疫源地鼠疫菌以鼠疫强毒株为主。
Objective To determine the virulence of plague virulence in plague natural foci of Qinghai Province and to establish the basic virulence data of plague natural foci in Qinghai Province. Methods 392 strains of Yersinia pestis were selected for virulence test. The LD50 of each tested strain was calculated by SPSS18.0. The spatial structure of the tested strains was analyzed by using the endemic geographical information system. Results There were 367 virulent plague strains in 392 strains of Yersinia pestis, accounting for 93.62% of all the plague strains, 10 strains of moderate plague strains in plague, accounting for 2.55%, 10 strains of plague plague in low strains (2.55%), 5 strains of attenuated plague strains Accounting for 1.27%. It was found that the virulence of Qilian mountain strains in plague natural foci of Qinghai Province was more virulent than that of Qinghai-Tibet Plateau strains. Conclusion The plague virulent strains of plague natural foci in Qinghai Province are mainly virulent strains of plague.