Edell T A, Emerson J K, Maupin G O, Barnes A M, Vernon T M
JAMA. 1979 May 25;241(21):2279-82.
Since 1915 the front range of the Colorado Rocky Mountains has been postulated as a focus of endemic tick-borne relapsing fever. However, the disease has rarely been identified: only two cases have been reported in Colorado since 1944. Three sporadic cases in 1977--tightly grouped geographically and temporally--prompted an epidemiologic review. Tick-borne relapsing fever should be considered in the differential diagnosis of recurrent paroxysmal fever--with or without known presence of ticks--whenever exposure in an endemic area is part of a patient's history.
自1915年以来，科罗拉多落基山脉的前沿地区一直被假定为地方性蜱传回归热的一个焦点。然而，这种疾病很少被确诊：自1944年以来，科罗拉多州仅报告了两例病例。1977年的三例散发病例——在地理和时间上紧密聚集——促使进行了一次流行病学审查。只要患者有在地方性流行区的暴露史，在复发性阵发性发热的鉴别诊断中，无论是否已知有蜱虫存在，都应考虑蜱传回归热。
