Tsutsugamushi


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Tsutsugamushi

 

(also called scrub typhus), an acute disease of man; a naturally endemic rickettsiosis. The reservoirs of the causative agent are rats, microtines, and mites of the superfamily Trombea. Tsutsugamushi occurs in Eastern and Southeast Asia and in Primor’e Krai in the USSR. A natural nidus of the disease exists in the Tadzhik SSR.

Tsutsugamushi develops after the victim is bitten by an infected mite. A small crusty ulcer appears on the site of the bite after an incubation period of 6–10 days. The disease sets in acutely with fever (39–40°C for 14–16 days), headaches, insomnia, muscular pain, and a bright red rash on the fifth to seventh days.

Serodiagnosis is used to detect the disease; treatment is by antibiotics. Preventive measures include the extermination of rats and insects in dwellings located in natural nidi of the disease, the use of mite repellents, and the wearing of protective clothing.

REFERENCE

Zdrodovskii, P. F., and E. M. Golinevich. Uchenie o rikketsiiakh i rikketsiozakh, 3rd ed. Moscow, 1972.

V. L. VASILEVSKII

References in periodicals archive ?
A review of scrub typhus (Orientia tsutsugamushi and related organisms): then, now, and tomorrow.
(5,6) Characteristic skin eschar in an acute febrile patient from the Tsutsugamushi Triangle is a valuable sign in scrub typhus diagnosis.
The specific species gene 56-kDa was used for the confirmation of diagnosis of Orientia tsutsugamushi infections.
Scrub typhus is endemic to a distinct region, the tsutsugamushi triangle, which include Japan, Taiwan, China and South Korea.
Scrub typhus is a mite-borne infectious disease caused by Orientia tsutsugamushi. The disease is one of the acute febrile illnesses in Korea during autumn and is manifests with high fever, headache, myalgia, and, in many patients, rash and an eschar.
Trombiculid mites of China: study on vector and pathogen of tsutsugamushi disease.
Second, the scrub typhus-causing genus Orientia, which only contains one recognized species, Orientia tsutsugamushi. (6) Recently, a new transitional species of rickettsiae, Rickettsia felis transmitted by cat fleas, has been described that shares clinical and phylogenetic characteristics with both the SF and typhus groups.
Rickettsial diseases include spotted fever group (SFG) rickettsioses (Mediterranean spotted fever, African tick-bite fever and the typhus group of rickettsiae), scrub typhus caused by Orientia tsutsugamushi, human monocytic ehrlichiosis and human granulocytic anaplasmosis.
Scrub typhus is caused by Rickettsia tsutsugamushi, a tiny parasite that is transmitted to humans from mice and rats through the bite of mites that live on the rodents (Cherath, n.d.).
Reducing the risk of transfusion-transmitted rickettsial disease by WBC filtration, using Orientia tsutsugamushi in a model system.