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| | THE MERCK MANUAL, Sec. 13, Ch. 159, Rickettsial Diseases |
 | | Rickettsioses comprise four groups: typhus--epidemic typhus, Brill-Zinsser disease, murine (endemic) typhus, and scrub typhus; spotted fever--Rocky Mountain spotted fever, Eastern tick-borne rickettsiosis, and rickettsialpox; Q fever; and trench fever. |
 | | In murine typhus, which is milder than RMSF or epidemic typhus, the rash is nonpurpuric, nonconfluent, and less extensive; renal and vascular complications are uncommon. |
 | | Patients with scrub typhus have all the clinical and pathologic manifestations of RMSF and epidemic typhus; however, scrub typhus occurs in different geographic areas, particularly in Malaya and northern Thailand. |
| www.merck.com /mrkshared/mmanual/section13/chapter159/159a.jsp (1378 words) |
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