In order to elucidate the natural foci of North - Asia tick - borne spotted fever along the bank of Heilongjiang river, we used PCR/RFLP to detect spotted fever group rickettsiae in ticks and rodents .

• 为了解黑龙江沿岸部分地区斑点热自然疫源地存在情况，作者用pcr/RFLP的方法检测该地区蜱类及鼠类中的斑点热群（spottedfevergroup，SFG）立克次体。