Encyclopedia > Rickettsia

  Article Content


Scientific classification

Bacteria of the genus Rickettsia are carried as parasites by many ticks, fleas, and lice, and cause diseases such as typhus, scrub typhus[?], rickettsialpox[?], Brill-Zinsser disease[?], Boutonneuse fever[?], and Rocky Mountain spotted fever in human beings. Like viruses, they grow only in living tissue. Judging by the scientific literature, research into the genetics of rickettsiae has been less intense than into that of viruses and other bacteria. Diseases caused by some other bacteria, such as Coxiella burnetii[?], the cause of Q fever, are also considered rickettsial diseases, though the organisms are no longer considered particularly close relatives.

The genus Rickettsia is named after Howard Taylor Ricketts[?] (1871-1910). Despite the similar name, Rickettsia bacteria do not cause rickets. The disease of rickets takes its name from the Greek word for spine, rhakhis, and is a vitamin deficiency disease, not an infectious disease.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Economy of Bahrain

... over the past decade. Bahrain has stabilized its oil production at about 40,000 barrels per day (b/d), and reserves are expected to last 10-15 years. The Bahrain Oil ...