MedlinePlus: Typhus - Group of infectious diseases transmitted by lice or fleas. Includes symptoms of Murine and Epidemic Typhus as well as treatment options and potential complications.
eMedicine.com: Typhus - Clinical review of the illness including its frequency, lab studies, medications, and prognosis.
Merck Manual: Typhus - Information about Epidemic Typhus and its mild, recurring form, Brill-Zinsser Disease.