Murine Typhus as a Common Cause of Fever of Intermediate Duration

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Abstract
MURINE TYPHUS (MT), a zoonosis that is caused by Rickettsia typhi, occurs all over the world, with endemic areas in North and South America, Southeast Asia, Africa, Australia, and some southern European countries.1-10 The importance of this illness has been underestimated. It is more frequent than is commonly believed and represents a worldwide health problem.11 Studies on its prevalence have shown that it also occurs in Spain.12,13 Sporadic cases have been reported in Seville, Huelva, and Murcia,7-9 but, to our knowledge, no extensive studies have been performed to investigate its clinical and epidemiological characteristics. Therefore, its real incidence is not known.