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Definition of Urban typhus
1. Noun. Acute infection caused by rickettsia and transmitted by the bite of an infected flea; characterized by fever and chills and muscle aches and a rash.
Medical Definition of Urban typhus
1. A mild form of typhus occurring in urban areas, reported in Mediterranean areas. Synonym: urban typhus. Siberian tick typhus, tick-borne rickettsiosis caused by infection with Rickettsia sibirica. (05 Mar 2000)