| typhus vaccine | A formaldehyde-inactivated suspension of Rickettsia prowazekii grown in embryonated eggs; effective against louse-borne (epidemic) typhus; primary immunization consists of two subcutaneous injections 4 or more weeks apart; booster doses are required every 6 to 12 months, as long as the possibility of exposure exists. A vaccine containing living rickettsiae of an attenuated strain of R. Prowazekii has also been used. (05 Mar 2000) |
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| urban typhus | 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) |
| urban typhus of malayia | Murine typhus, an acute infectious disease with fever, headache, and rash, all quite similar to, but milder than, epidemic typhus, caused by a related microoganism, rickettsia typhi (mooseri), transmitted to humans by rat fleas (xenopsylla cheopis). The animal reservoir includes rats, mice and other rodents. Murine typhus occurs sporadically worldwide but is more prevalent in congested rat-infested urban areas. Also known as endemic typhus, andrat-flea typhus. (12 Dec 1998) |
| louse-borne typhus | A severe acute disease with prolonged high fever up to 40 |