Bacterium
rickettsia Audio
rick·ett·si·a [ ri-ket-see-uh ]
Subclass of:
Rickettsieae
Etymology:
Eponym. H. T. Ricketts, who died of this infection while investigating these pathogens.
Definitions related to rickettsia:
  • A genus of gram-negative, aerobic, rod-shaped bacteria often surrounded by a protein microcapsular layer and slime layer. The natural cycle of its organisms generally involves a vertebrate and an invertebrate host. Species of the genus are the etiological agents of human diseases, such as typhus.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • A genus of non-motile, Gram-negative, non-spore-forming, obligate intracellular parasitic bacteria in the phylum Proteobacteria.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Any bacteria that is not assigned to the species level but can be assigned to the Rickettsia genus level.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • In the Rickettsiaceae family, a genus of gram negative, aerobic, rod shaped bacteria often surrounded by a protein microcapsular layer and slime layer; the natural cycle of its organisms generally involves a vertebrate and an invertebrate host; species of the genus are the etiological agents of human diseases, such as typhus.
    CRISP Thesaurus
    National Institutes of Health, 2006
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