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在俄勒冈州应用食肉动物的血清学检查监测鼠疫疫情,已在该州以前被认为无鼠疫的一些地区查出了鼠疫。1936年,该州在发现首例人间患者和该患者死亡后,开始实行过鼠疫疫情监测计划,其后几年内,通过野外调查,在9种啮齿动物和兔类动物的组织和跳蚤中,以及在獾的蜱中也曾查出鼠疫杆菌。到1974年,查明鼠疫在该州整个东南半部的许多地区是地方性动物病。一地区内有鼠疫抗体的食肉动物的百分数及其抗体水平,可反映该地区鼠疫最近活动的程度。除猫科以外,野生食肉动物很少
Plague surveillance in the state of Oregon using carnivore serological surveillance has detected plague in some areas previously considered plague free in the state. In 1936, when the first human patient was discovered and the patient died in the state, the plague outbreak surveillance program was started. In the following years, field investigations were conducted in tissues and fleas of nine rodent and rabbit species and Yersinia pestis has also been detected in badger ticks. By 1974, the plague was identified as endemic animal diseases in many parts of the state throughout the southeast half of the state. The percentage of carnivores with plague antibodies and their antibody levels in a region can reflect the recent extent of plague in the area. Except cats, there are few wild carnivores