| prevalence of rickettsia felis dna in the blood of cats and their fleas in the united states. | rickettsia felis is associated with fever, headache, myalgia, and macular rash in some infected humans and has been detected in the cat flea (ctenocephalides felis) in many countries around the world. while some naturally exposed cats have been assessed for antibodies against r felis, to our knowledge, no one has reported use of polymerase chain reaction (pcr) to attempt to amplify r felis dna from client-owned cats and the fleas collected from them. in this study, we assayed 92 pairs of cat blo ... | 2007 | 17276123 |