Rickettsia conorii

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Rickettsia conorii

a species of bacteria causing Mediterranean spotted fever in southern Europe, Africa, and the Middle East; transmitted by various ticks, such as the dog tick Rhipicephalus sanguineus.

Rick·ett·si·a co·nor·i·i

(ri-ket'sē-ă kō-nō'rē-ī)
A widespread African species probably causing boutonneuse fever in humans; transmitted by various ticks.

Rickettsia conorii

The causative agent of boutonneuse fever found in the Mediterranean, parts of Africa, and India. The animal reservoirs are rodents and dogs; the vectors are ticks of several genera.
See also: Rickettsia


a genus of small, rod-shaped, round to pleomorphic microorganisms in the order Rickettsiales. They are true bacteria, gram-negative, and cultivable only in living tissues. Transmitted by lice and ticks, they cause disease in humans and domestic animals but are also found in the cytoplasm of tissue cells of lice, fleas, ticks and mites, which may act as reservoirs and vectors. See also ehrlichia and coxiella.

Rickettsia akari
causes rickettsial pox in humans, mice and rats.
Rickettsia australis
causes queensland tick typhus in humans, small marsupials, rats.
Rickettsia canadensis
causes new typhus in humans and rabbits.
Rickettsia conjunctivae
see Chlamydophila pecorum.
Rickettsia conorii
causes boutonneuse fever in humans and dogs and small feral mammals.
Rickettsia ovina
see Ehrlichia ovina.
Rickettsia phagocytophila
see Anaplasmaphagocytophila.
Rickettsia prowazeki
causes epidemic typhus in humans and possibly cattle, sheep and goats.
Rickettsia rickettsii
causes spotted fever in humans and many feral animals, especially rodents and in dogs and birds. See also rocky mountain spotted fever.
Rickettsia ruminantium
see Ehrlichiaruminantium.
Rickettsia rupricaprae
see Mycoplasmaconjunctivae.
Rickettsia sibirica
causes Siberian tick typhus in humans and many feral mammals, especially rodents.
Rickettsia tsutsugamushi
Rickettsia typhi
causes murine typhus in humans and the brown rat.
References in periodicals archive ?
Host and microbial risk factors and pathophysiology of fatal Rickettsia conorii infection in Portuguese patients.
In Egypt, Mediterranean spotted fever caused by Rickettsia conorii transmitted by the brown dog tick, Rhipicephalus sanguineus, is known to be present, although cases are rarely documented.
Diagnosis of Mediterranean spotted fever by cultivation of Rickettsia conorii from blood and skin samples using the centrifugation shell-vial technique and by detection of Rickettsia conorii in circulating endothelial cells, a 6 year follow-up.
Prevalence of antibodies to Coxiella burnetii, Rickettsia conorii, and Rickettsia typhi in seven African countries.