CDC Travelers' Health Information on Rickettsial Infections
   Factsheet on the various rickettsial diseases a traveler might encounter.
   http://www.cdc.gov/travel/diseases/rickettsial.htm

Medmicro: Rickettsiae
   Scientific and medical information on the organisms and the diseases they cause.
   http://gsbs.utmb.edu/microbook/ch038.htm

The Merck Manual: Rickettsial Diseases
   Provides detailed information on each of these conditions, including symptoms, diagnosis, treatment and public health implications.
   http://www.merck.com/mrkshared/mmanual/section13/chapter159/159a.jsp

eMedicine - Mediterranean Spotted Fever
   Article by Pierre A Dorsainvil, MD. Also known as boutonneuse fever, is transmitted by the dog tick Rhipicephalus sanguineus.
   http://www.emedicine.com/med/topic1412.htm