Brief information from the U.S. Centers for Disease Conrtol and Prevention.

Information about the only rickettsial disease that causes explosive epidemics in humans. The fever, caused by Rickettsia prowazekii, is transmitted by the human body louse (Pediculus humanus corporis).

FAQ from the Texas Department of Health.

Detailed information about this acute, febrile, infectious illness caused by Rickettsia tsutsugamushi and transmitted by trombiculid mites.

Information about all three types - epidemic louse-borne, scrub, and endemic (murine) typhus.

Brief information about louse-borne typhus.

FAQ from the Virginia Department of Health.

Factsheet on the four main types of typus.