A review of 49 tick bite cases that occurred from 2020–2022 at Japanese Red Cross Ashikaga Hospital in Tochigi Prefecture —Trends in 40 cases of <i>Amblyomma testudinarium</i> bites—

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  • Shimada Mizuho
    Health Care Center, Jichi Medical University Department of Internal Medicine, Japanese Red Cross Ashikaga Hospital
  • Doi Kandai
    Department of Wildlife Biology, Forestry and Forest Products Research Institute
  • Kawabata Hiroki
    Department of Bacteriology I, National Institute of Infectious Diseases
  • Yamauchi Takeo
    Obihiro University of Agriculture and Veterinary Medicine
  • Ando Shuji
    Department of Virology I, National Institute of Infectious Diseases
  • Kobayashi Yumie
    Department of Infection Control Room, Japanese Red Cross Ashikaga Hospital
  • Hirose Yoshie
    Department of Clinical Laboratory, Japanese Red Cross Ashikaga Hospital
  • Shuto Fuminori
    Department of Clinical Laboratory, Japanese Red Cross Ashikaga Hospital
  • Fujiwara Yukako
    Department of Dermatology, Japanese Red Cross Ashikaga Hospital
  • Saitou Miho
    Department of Dermatology, Japanese Red Cross Ashikaga Hospital
  • Kikuchi Hiroko
    Department of Emergency, Japanese Red Cross Ashikaga Hospital
  • Komatsumoto Satoru
    Department of Internal Medicine, Japanese Red Cross Ashikaga Hospital
  • Murohisa Toshimitsu
    Department of Internal Medicine, Japanese Red Cross Ashikaga Hospital
  • Shimano Satoshi
    Science Research Center, Hosei University

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Other Title
  • 栃木県足利赤十字病院における3年間（2020–2022年）のマダニ刺症49例の検討—タカサゴキララマダニ刺症40例の傾向—
  • 栃木県足利赤十字病院における3年間(2020-2022年)のマダニ刺症49例の検討 : タカサゴキララマダニ刺症40例の傾向
  • トチギケン アシカガ セキジュウジ ビョウイン ニ オケル 3ネンカン(2020-2022ネン)ノ マダニシショウ 49レイ ノ ケントウ : タカサゴキララマダニシショウ 40レイ ノ ケイコウ

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<p>During the 3-year period (2020–2022), 49 cases of tick bites were presented to the Japanese Red Cross Ashikaga Hospital in Tochigi Prefecture, Japan. More than 60% of all tick bites between March and September occurred within two months (May and June). Amblyomma testudinarium was responsible for 40 cases among all the tick bite cases. Specifically, 41 individuals of this species (39 nymphs/2 adult females) were linked (The point estimate was 0.79 with a 95% confidence interval of 0.67–1.00). There were 38 cases of tick bites in Ashikaga City, and 23 of which occurred in the vicinity of the patients’ houses (gardens and fields). Suspected cases of Tick-associated rash illness (TARI) were first recorded in the Japanese Red Cross Ashikaga Hospital in May 2020, in a total of five cases ( i.e., the patients were aged 50 years or older). TARI is indicative of repeated tick bites, which points to the permanent settlement of the A. testudinarium in and around Ashikaga City. Therefore, we believe that greater efforts should be implemented towards the detection of tick-associated infections in this area, including Severe fever with thrombocytopenia syndrome virus for which A. testudinarium is considered as a major vector.</p>

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