著者

佐藤 寛子 柴田 ちひろ 秋野 和華子 斎藤 博之 齊藤 志保子 門馬 直太 東海林 彰 高橋 守 藤田 博己 角坂 照貴 高田 伸弘 川端 寛樹 安藤 秀二

出版者

日本衛生動物学会

雑誌

衛生動物 (ISSN:04247086)

巻号頁・発行日

vol.67, no.3, pp.167-175, 2016-09-25 (Released:2017-06-05)

参考文献数

29

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In Akita Prefecture, patients with Kato type of tsutsugamushi disease (Sucrub typhus) transmitted by Leptotrombidium akamushi were identified in August 2008 for the first time in 15 years, and in 2010 as well. We conducted surveys of the habitat of L. akamushi using Suzuki’s Method (MITORI-HO) between 2011 and 2014 in 74 areas of riverbed in which the disease was prevalent, including the upstream, midstream, and tributary areas of the Omono River. Habitats of L. akamushi were identified in 40 areas in three cities and one town, and the total distance along Omono River was approximately 10 km shorter than that reported by a survey conducted in 1964. Some of those areas were inhabited by L. akamushi gradually after river improvement work and the disease temporarily became prevalent there, although no patient had been identified in these areas prior to the construction. L. akamushi was only collected from sand, sandbanks, and other areas in the vicinity of the river, which can easily be flooded when the water level rises. No extensive research has been conducted on the re-emergence of tsutsugamushi disease transmitted by L. akamushi. It is necessary to continue to provide people with information and increase their awareness.