二连浩特口岸地区沙鼠鼠疫自然疫源地现状分析

目的：掌握二连浩特口岸地区生物群落状况，评估动物鼠疫流行的可能性。方法：通过疫源地现场的动物流行病学调查，参考有关历史资料，进行综合分析。结果：1999～2001年由于连续3年干旱，植被稀矮，主要宿主长爪沙鼠因食源匮乏，繁殖减少，自然死亡增加，种群数量急剧下降，以鼠疫细菌学和血清学方法检验了大量宿主动物和媒介蚤类，未发现阳性材料。结论：1999～2002年动物鼠疫出现了明显间断。但随着长爪沙鼠生存条件变好，数量会迅速回升，有可能出现新的流行。二连浩特口岸地区沙鼠鼠疫自然疫源性将长期存在。

Analysis for diseases source area of unguiculatus on Erlian port area

Objective Mastering biology species condition of port area to evaluate epidemic possibility of animal plague spread. Methods A comprehensive analysis source area and referring to relative historic material through the animal epidemiology investigates on diseases source area. Results Species number of the host Meriones unguiclatus was decreased sharply due to continutive 3 years' draught, rare plant and food resoures decreased propagation , increased death during 1999 and 2001. Many hest animals and vector louse were examined by plague bacteria method and sero method , no positive material was found. Conclusions From 1999 to 2002, animals'plague appeared obvious interval with the living condition turn better, the number will rise again , new epidemic may occur. Plague natural diseases'resource characteristic will exist for a long time.