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目的继已发现的鼠疫疫源线索,查清其波及的范围分布,做好前瞻性预报预警,防止人间鼠疫的发生和蔓延。方法疫区向周边放射,在4个不同的生态环境区布夹捕鼠,踏查、收集自毙、萎靡、腐败材料进行血清病原学监测。结果进一步明确了在A区鼠疫的主要宿主、传播媒介以及所波及的范围等流行特征。结论依据在A区分别从大沙鼠、臀突客蚤中各分离出的3株鼠疫菌,在B区发现的鼠疫F1抗原、抗体阳性结果,判定A区是近来新发现的大沙鼠鼠疫自然疫源地,主要传播媒介是臀突客蚤,B区为疑似大沙鼠鼠疫疫区,但其流行和分布范围是否在扩大,以及是否有其他宿主和媒介的染疫有待未来证实。
Objective Following the clues of the plague foci that have been found, we can find out the spread of the plague and do a good job of forward-looking forecast and early warning to prevent the occurrence and spread of plague in the world. Methods The epidemic area was irradiated to the surroundings. In 4 different ecological environment areas, the rats were trapped and trampled, and the animals were sacrificed, dilapidated and corrupted to collect the serum etiological markers. The results further clarified the epidemiological features of the main host of the plague in Area A, the transmission media, and the extent of the spread. Conclusion Based on the 3 strains of Yersinia pestis isolated from the gerbil and the hip fleece in A zone, the plague F1 antigen and antibody were found in the B zone, and the A zone was found to be the newly discovered plague In natural foci, the main vector is the flea buttocks and the zone B is a suspected gerbil, but its prevalence and distribution are widening and whether any other host and vector infections will be confirmed in the future.