Classification and external resources
ICD-10 A75-A79
ICD-9 080-083
eMedicine ped/2015
MeSH D012288

A rickettsiosis is a disease caused by intracellular bacteria. It has been predicted that global warming may lead to greater incidence.[1]

Examples and causative organisms

Rickettsioses can be divided into a spotted fever group (SPG) and typhus group (TG).[2]

In the past, rickettsioses were considered to be caused by species of Orientia tsutsugamushi.

Examples of rickettsioses include typhus, both endemic and epidemic, Rocky Mountain spotted fever, and Rickettsialpox.

Organisms involved include Rickettsia parkeri.[4]

Many new causative organisms have been identified in the last few decades.[5]

Most are in the genus Rickettsia, but scrub typhus is in the genus Orientia.[6]


Doxycycline has been used in the treatment of rickettsial infection.[7]


  1. ^ Parola P, Socolovschi C, Jeanjean L, et al. (2008). Hotez, Peter J., ed. "Warmer Weather Linked to Tick Attack and Emergence of Severe Rickettsioses". PLoS Negl Trop Dis 2 (11): e338.  
  2. ^ Choi YJ, Jang WJ, Ryu JS, et al. (February 2005). "Spotted fever group and typhus group rickettsioses in humans, South Korea". Emerging Infect. Dis. 11 (2): 237–44.  
  3. ^ Raoult D, Roux V (October 1997). "Rickettsioses as paradigms of new or emerging infectious diseases". Clin. Microbiol. Rev. 10 (4): 694–719.  
  4. ^ Paddock CD, Finley RW, Wright CS, et al. (November 2008). "Rickettsia parkeri rickettsiosis and its clinical distinction from Rocky Mountain spotted fever". Clin. Infect. Dis. 47 (9): 1188–96.  
  5. ^ Parola P, Paddock CD, Raoult D (October 2005). "Tick-Borne Rickettsioses around the World: Emerging Diseases Challenging Old Concepts". Clin. Microbiol. Rev. 18 (4): 719–56.  
  6. ^ Unsworth NB, Stenos J, Faa AG, Graves SR (July 2007). "Three Rickettsioses, Darnley Island, Australia". Emerging Infect. Dis. 13 (7): 1105–7.  
  7. ^ "eMedicine - Rickettsial Infection : Article by Mobeen H Rathore".