CH. 21 DISEASES OF THE RESPIRATORY TRACT

A) Require insect vectors and target small blood vessels in the body. 1) symptoms often include a rash, edema, and hypotension. B) Diseases caused by Rickettsia. 1) Epidemic typhus (louse-borne typhus) a) Caused by . b) Infection generally occurs following contact with louse feces. c) Not common in U.S. 2) Endemic typhus (murine typhus) a ... ................
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