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- A species of mite (Trombicula akamushi) found in Japan.
- 1901, Ludvig Hektoen & David Riesman, An American Text-book of Pathology, page 243:
- The recent studies on the kedani disease of Japan are extremely interesting as examples of proteus infection through the wounds inflicted by an insect, a specific mite (kedani) closely allied to the harvest-mite (Leptus autumnalis).
- 1926, Rinya Kawamura, Nathan Chandler Foot, & Shiro Tashiro, Studies on tsutsugamushi disease (Japanese blood fever), page 200:
- Tanaka (175) was the first to distinguish three kinds of akamushi in 1919, naming them "kedani" and "nezumidani" "a" and "b" on the basis of certain morphological differences. Of their habits he says : "The first kind, or kedani, bites both man and field voles;
- 2013, James Stevens Simmons, Tom F. Whayne, & Gaylord West Anderson, India and the Far East: A Geography of Disease and Sanitation, →ISBN, page 134:
- The kedani mite (Trombicula akamushi) is the vector of Japanese river fever or tsutsugamushi disease in the northern part of Japan, in Formosa, the Yangtze valley of China, Siam, French Indo-China and Malaya.
- A disease for which this mite is the vector; tsutsugamushi.
- 1915, The Philippine Journal of Science - Volume 10, Part 2, page 345:
- These facts, together with the occurrence of a rash, show that the disease possesses many of the features which characterize kedani or tsutsugamushi fever of Japan.
- 1960, Pavel Feliksovich Zdrodovskiĭ & Elena Mikhaǐlovna Golinevich, The rickettsial diseases, page 354:
- Formerly this disease was called Japanese river fever, kedani disease, or scrub typhus fever. Tsutsugamushi fever is endemic over a wide area of South-East Asia and the south eastern part of the Pacific Ocean;
The use of this term for the disease has fallen into disuse in favour of tsutsugamushi.