摘要
本文报道产于吉林省鼠疫地区的方形黄鼠蚤和印鼠客蚤,在感染强毒鼠疫菌后,其鼠疫媒介效能的实验室测定结果。结果表明,方形黄鼠蚤平均外潜伏期长,栓塞蚤数少,媒介效能为0.05.印鼠客蚤为0.25。结合多年调查资料,认为方形黄鼠蚤不但是黄鼠鼠间鼠疫的主要媒介,同时在把野鼠鼠疫扩散到家栖鼠间以及在鼠疫自然疫源性的保存方面,该蚤也起重要作用。在媒介效能测定中,本实验首次引入了传疫率的概念。
This paper reported on a study carried out to determine the experimental plague-vector efficien- cy of Citellophilus tesquorum sungaris compared with Xenopsylla cheopis after both species had been infected with a virulent plague strain(55012)isolated from a Citellus d. dauricus. Both species of fleas was caught from the plague area in Jilin province. The experiments showed that the mean ex- trinsic incubation period was far longer in C.t. sungaris than in X. cheopis but that the latter species produced more blocked fleas. The observed values for vector efficiency indicate that X. cheopis was about five times as effcient in plague transmission as the C.t. sungaris. An additional component. the rate of transmitted-plague, was used first to determine plague-vector efficiency of fleas.
出处
《中国地方病防治》
北大核心
1993年第4期198-200,共3页
Chinese Journal of Control of Endemic Diseases
