曲靖市历史疫区鼠疫流行的危险因素

目的 :探索曲靖市鼠疫流行的危险因素。方法 :在曲靖市的 2 9个乡镇捕鼠 ,对捕获鼠进行鼠种及蚤种的分类鉴定。取鼠血清用间接血球凝集实验检测鼠疫F1抗体。结果 :曲靖市位于北纬 2 4°2 1′～ 2 7°0 4′之间 ,平均气温 14℃ ,最热月平均气温 19.7℃。总鼠密度为 11.90 %。黄胸鼠密度为 4 .0 5 %。主要宿主黄胸鼠为优势种的地区有陆良县、宣威的榕城镇、板桥镇、罗平的大水井乡、鲁布革乡。在北纬 2 5°5 3′以北没发现印鼠客蚤 ,以不等单蚤为优势蚤种。在北纬 2 5°7′～ 2 5°5 3′,以缓慢细蚤为优势蚤种。在北纬 2 5°7′以南 ,除陆良以缓慢细蚤为优势种外 ,其他地区以印鼠客蚤为优势蚤种。鼠血清中未找到F1抗体。结论 :鼠疫流行危险因素中的主要宿主和媒介在曲靖市均已存在。气候有利于鼠疫的流行

Risk Factor of Plague Epidemic in Qujing

Objective: To study the risk factor in Qujing city that will induce the epidemic of plague. Methods: The reservoir of plague and vehicle insect in the area where plague exited and the burgs where had the potential happen plague had been investigated. We took rats serum and had indirect agglutination test F1 antibody. Results: The density of rat was 11.90 %, and the density of Rattus flavipectus was 4.05%. The predominant species was Rattus flavipectus in Luniang county, Rongcheng and Banqiao of Xuanwei county, Dashuijing and Lubuge of Luoping county. The characteristic of flea distribution was that Xenopsylla cheopis had not been found in north of the north latitude 25°53′ and Monopsyllus anisus was predominant, leptopsylla segnis was predominant in the area between the north latitude 25°7′ and 25°53′. Xenopsylla cheopis was predominant in south of the north latitude 25°7′(except Luniang county where leptopsylla segnis was predominant). F1 antibody was not found. Conclusion: Risk factors that will induce the epidemic of plague include main reservoir and main vehicle and nature climate have exited in Qujing city. The probability that plague exists is not excluded.