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Medical Term:

typhus vaccine


Definition: 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 6–12 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.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.