[…] adjacent to the Mediterranean, Black, and Caspian Seas R. akari Trunk, extremities, face Eschar present Mites US, Russia, Korea, Africa R. parkeri rickettsiosis R. parkeri Eschar present Gulf Coast tick (Amblyomma maculatum) Southern US, South America [msdmanuals.com]

Clinical features Biopsy of rash with fluorescent antibody staining to detect organisms Acute and convalescent serologic testing (serologic testing is not useful acutely) Polymerase chain reaction (PCR) Doxycycline Treatment of spotted fever rickettsioses [msdmanuals.com]

The epidemiology of these tick-borne rickettsioses resembles that of Rocky Mountain spotted fever (RMSF) in the Western Hemisphere. Ixodid ticks and wild animals maintain the rickettsiae in nature. [msdmanuals.com]

No effective vaccine is available to prevent spotted fever rickettsioses. Measures can be taken to prevent tick bites. (See also Centers for Disease Control and Prevention: Preventing tick bites.) [msdmanuals.com]