Colorado tick fever

Japanese: コロラドダニ熱 - コロラドだにねつ（英語表記）Colorado tick fever

An infectious disease caused by a virus belonging to the arbovirus group that grows in the body of a type of tick ( Dermacentor andersoni ) and is transmitted to humans through the tick's bite. It is distributed from Canada to the Rocky Mountains of North America, and was previously confused with a mild form of Rocky Mountain spotted fever, but was recognized as an independent disease in 1930. It is most common in May and June. The incubation period is 3 to 6 days, and symptoms include back pain, leg muscle pain, chills, headache, and photophobia (sensitivity to bright light), as well as abdominal pain, vomiting, tachycardia, and conjunctival congestion.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

アルボウイルス群に属するウイルスが，マダニの1種(Dermacentor andersoni)の体内で増殖し，刺咬によりヒトに伝播されて発症する感染症。カナダから北アメリカのロッキー山地に分布し，以前はロッキー山紅斑熱の軽症型と混同されていたが，1930年に独立疾患とされた。5～6月に多い。潜伏期は3～6日で，背痛，下肢筋痛，悪寒，頭痛，羞明（しゆうめい）(まぶしさ)などで発病し，腹痛，嘔吐，頻脈，結膜充血を伴う。

出典　株式会社平凡社世界大百科事典第２版について　情報

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