Rickettsia /Rick·ett·sia/ (rĭ-ket´se-ah) a genus of the tribe Rickettsieae, transmitted by lice, fleas, ticks, and mites to humans and other animals, causing various diseases.
Rickettsia a´kari the etiologic agent of rickettsialpox, transmitted by the mite Allodermanyssus sanguineus from the reservoir of infection in house mice.
Rickettsia austra´lis the etiologic agent of North Queensland tick typhus, possibly transmitted by Ixodes ticks.
Rickettsia cono´rii the etiologic agent of boutonneuse fever (Marseilles fever, Mediterranean fever) and possibly of Indian tick typhus, Kenya typhus, and South American tick-bite fever; transmitted by Rhipicephalus and Haemaphysalis ticks.
Rickettsia prowaze´kii the etiologic agent of epidemic typhus and the latent infection Brill's disease, which are transmitted between humans via Pediculus humanus.
Rickettsia rickett´sii the etiologic agent of Rocky Mountain spotted fever, transmitted by Dermacentor, Rhipicephalus, Haemaphysalis, Amblyomma, and Ixodes ticks.
Rickettsia tsutsugamu´shi the etiologic agent of scrub typhus, transmitted by larval mites of the genus Trombicula, including T. akamushi and T. deliensis, from rodent reservoirs of infection.
Rickettsia pro·wa·zek·i·i (pr  v -z k  - )n. A bacterium that causes epidemic typhus fever. |
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